Term
Central pore with cheesy, foul smelling discharge is diagnostic Origin is from the hair follicle |
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Definition
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Term
KEY POINTS 1. ____ nodule of uncertain origin 2. Suspect cancer for ____ dermal nodules 3. ___ & ____ are helpful distinguishing features. |
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Definition
Biopsy hard Color and consistency |
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Term
Definition: cyst derived from the upper portion of the epithelial lining of a hair follicle, filled with macerated keratin. Also known as epidermoid cyst |
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Definition
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Term
Epidermal Inclusion Cyst Incidence: |
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Definition
common, can occur at any age |
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Term
Epidermal Inclusion Cyst History: |
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Definition
usually asymptomatic and slow growing. May rupture or get infected causing inflammation, pain, and draining of purulent, foul smelling material |
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Term
Epidermal Inclusion Cyst Physical Examination: |
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Definition
flesh colored, firm, malleable, dome shaped nodule with central punctum (pore), location varies, usually on head or trunk |
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Term
A central pore is characteristic of a ___ |
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Definition
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Term
Epidermal Inclusion Cyst Differential Diagnosis |
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Definition
Pilar (tricholemma) cysts- arise from the middle third (isthmus) of the follicular canal. Occur most frequently on the scalp. Both Pilar and Epidermal Inclusion Cysts are benign.
Lipoma - tumor of fatty tissue, usually deeper in the skin and feels rubbery.
Malignant tumor must be considered if diagnosis is uncertain |
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Term
Epidermal Inclusion Cyst Laboratory and Biopsy |
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Definition
Usually diagnosis can be made clinically. Can incise and drain the lesion, will find cheesy, foul-smelling, keratinous contents. Biopsy can confirm diagnosis, but is not necessary. |
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Term
Epidermal Inclusion Cyst Therapy |
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Definition
Usually no therapy is requested or needed. If it is, the entire cyst with its lining needs to be removed to prevent recurrence. Elliptical excision is usually required for removal of cysts that have previously ruptured and scarred. |
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Term
Epidermal Inclusion Cyst Course and Complications |
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Definition
Untreated, often stabilize in size between 1-3 cm. Complications are rare but include rupture and infection. Treat as an abscess: Incision and drainage and occasionally oral antibiotics. Gardner’s Syndrome: rare autosomal dominant disorder with multiple epidermal cysts, fibromas, osteomas, and intestinal polyps that often under go malignant degeneration |
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Term
Epidermal Inclusion Cyst Pathogenesis |
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Definition
Epidermal inclusion cysts arise from the upper portion , the infundibulum of a hair follicle. The lining of the cyst is identical to that of the surface epidermis and produces keratin, which having no place to shed, accumulates and forms the moist cystic mass. |
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Term
Benign vascular tumor in infancy Superficial and subcutaneous involvement Most regress spontaneously |
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Definition
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Term
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Definition
benign proliferation of blood vessels in the dermis and subcutis |
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Term
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Definition
most common soft tissue tumor of infancy, more common in female, premature, and Caucasian infants |
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Term
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Definition
most arise in first few weeks of infancy and are usually asymptomatic |
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Term
Hemianginoma Physical Examination: |
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Definition
superficial hemangiomas are bright red, deep subcutaneous hemangiomas are bluish, mixed hemangiomas are bright red, dome-shaped papules. Blanchability is a diagnostic feature found in many hemangiomas. |
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Term
Hemianginoma Differential Diagnosis: |
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Definition
usually diagnosis is clinical, as vascular malformations are present at birth and do not spontaneously regress |
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Term
Hemangioma Laboratory and Biopsy: |
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Definition
biopsy not needed, will show marked increase in number of blood vessels Therapy: None Steroids, 3-5 mg/kg daily Laser Surgery |
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Term
Hemangioma Course and Complications |
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Definition
By age 5, 50% will have spontaneously regressed By age 9, 90% will have spontaneously regressed 20%of patients have residual changes including scarring and fibro-fatty tissue Diffuse neonatal hemangiomatosis: in infants with numerous hemangiomas, internal organ involvement should be suspected as this rare syndrome occasionally leads to death from high output cardiac failure of vital organ compromise. |
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Term
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Definition
Unknown- speculated result of angiogenic growth factors that encourage localized proliferation of endothelial cells and stroma resulting in a cellular mass with vasculature. |
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Term
dermal fibrotic papule or small nodule chronic, asymptomatic, and stable |
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Definition
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Term
Dermatofibroma Definition: |
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Definition
area of focal dermal fibrosis, often accompanied by overlying epidermal thickening and hyperpigmentation. Appears clinically as a brown papule or small nodule, often more indurated than elevated |
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Term
Dermatofibroma Incidence: |
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Definition
common and often found incidentally |
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Term
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Definition
asymptomatic, patient may wonder about chance of malignancy |
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Term
Dermatofibroma Physical Examination: |
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Definition
usually around 5 mm in size and slightly elevated, vary in color, best appreciated by palpation- “dimple sign” in where pinching the lesion results in central dimpling- not seen in other lesions. Commonly found on legs and thighs but can be located anywhere. |
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Term
Dermatofibroma Differential Diagnosis: |
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Definition
nevus, melanoma, dermatofibrosarcoma protuberans is a low-grade malignant fibrous tumor that grows slowly but persistently |
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Term
___ or ___ ____ Dermatofibroma LESION SHOULD UNDERGO BIOPSY TO RULE OUT MALIGNANCY |
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Definition
ENLARGING OR ATYPICALLY COLORED |
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Term
Nevi are usually ___ than dermatofibromas and do not exhibit __ ___. Darker dermatofibromoas may look like ___ , if in doubt, biopsy the lesion. |
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Definition
softer dimple sign melanoma |
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Term
Dermatofibroma Laboratory and Biopsy: |
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Definition
diagnosis is usually made clinically. Histology will show focal proliferation of densely packed collagen bands that are twisted and intertwined. Fibroblasts are interspersed and increased in number. Increased pigmentation of the slightly thickened overlying epidermis accounts for the frequently brown color of theses lesions. |
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Term
Dermatofibroma Therapy None Excision |
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Definition
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Term
Dermatofibroma Course and Complications: |
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Definition
chronic and stable and not associated with any complications |
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Term
Dermatofibroma Pathogenesis: |
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Definition
trauma, such as an insect bite, may be the culprit that initiates an exuberant healing response with proliferation of fibroblasts and subsequent fibrosis |
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Term
Exuberant scar tissue Treat cautiously because of high recurrence rate |
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Definition
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Term
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Definition
excessive proliferation of collagen (scar tissue) after trauma to the skin. |
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Term
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Definition
common, occur most often in young African Americans |
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Term
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Definition
ear piercing, surgical excision, wounds. Develop over weeks to months and may itch during growth phase |
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Term
Keloid Physical Examination: |
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Definition
protuberant, firm, scar tissue with irregular borders or claw-like extensions. Most commonly found on earlobes secondary to piercing, the shoulders, upper chest and back |
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Term
Keloid Differential Diagnosis |
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Definition
Hypertrophic scars stay within original site of trauma, whereas keloids expand beyond, sometimes, far beyond the original border of the wound. Dermatofibrosarcoma protuberans will not have a history of trauma and the lesion continues to enlarge- must biopsy if this is suspected. |
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Term
Keloid Laboratory and Biopsy: |
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Definition
usually not needed as can diagnosis can be made on clinical grounds. |
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Term
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Definition
whorls and nodules of highly compacted hyalinized bands of collagen, an increased number of fibroblasts, and many mast cells which may be the cause of the associated pruritus with the release of their histamine content. |
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Term
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Definition
None Intralesional steroids: Kenalog-40 Surgery with intralesional steroids Surgery should never be used alone in treating keloids |
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Term
Keloid Course and Complications: |
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Definition
untreated, will enlarge and then stabilize. Usually will not regress and if it occurs at all- will take years. Major problem is cosmetic disfigurement which may be profound. |
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Term
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Definition
increased fibroblast activity stimulated by tissue injury leads to increased collagen synthesis Also there is an increase in dermal ground substance. |
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Term
Benign subcutaneous fat tumor Slow growing or stable Biopsy rapidly growing tumors and if uncertain of the diagnosis |
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Definition
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Term
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Definition
Benign tumor of subcutaneous fat. Origin unknown. |
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Term
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Definition
Common, most common in midlife. Patient may be concerned it is malignant. |
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Term
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Definition
Asymptomatic, may grow slowly. |
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Term
Lipoma Physical Examination: |
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Definition
Flesh colored, may be elevated, rubbery and freely mobile nodule. Rarely larger than 10 cm, can be located anywhere, usually on trunk, neck and upper extremities. |
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Term
Lipoma Differential Diagnosis: |
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Definition
Epidermal inclusion cyst- Lipoma is deeper, rubberier, and freely mobile underneath the skin.
Angiolipoma are often painful and have a prominent vascular component.
Malignant tumors of the skin can be deep, but are firm if not hard and also involve the dermis-skin can’t be freely moved over them.
Soft tissue sarcoma- harder to palpation. Lipomas are soft and fatty to palpation. |
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Term
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Definition
Impinged on by encapsulated tumor of normal appearing fat cells. |
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Term
Lipoma Laboratory and Biopsy: |
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Definition
Diagnosis can be made clinically, but a deep elliptical excision is preferred and histology will show an encapsulated collection of normal fat cells. |
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Term
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Definition
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Term
Lipoma Course and Complications: |
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Definition
None, biopsy if acute in onset or appears to be growing. |
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Term
Soft, “buttonhole”, papule or nodule Keep neurofibromatosis type 1 in your differential if there is more than one neurofibroma |
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Definition
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Term
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Definition
A focal proliferation of neural tissue within the dermis. May appear as soft protruding papules and nodule and less often as deep firm subcutaneous nodule. Multiple neurofibromas are a cutaneous expression of neurofibromatosis type 1, aka Von Recklinghausen’s disease, a dominantly inherited neurocutaneous disorder with prominent skin, skeletal, and nervous system abnormalities. Neurofibromatosis 2 is characterized primarily by bilateral acoustic neuromas and usually lacks the cutaneous finds of neurofibromatosis 1. |
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Term
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Definition
Solitary neurofibromas are infrequent and inconsequential. Neurofibromatosis type 1 is one of the more common genetic disorders, with an estimated birth incidence of 1 in 3000. Multiple neurofibromas are a sign of neurofibromatosis type 1. |
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Term
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Definition
Neurofibromatosis type 1 develop skin tumors in late childhood, with rapid growth in puberty and pregnancy. Inheritance is autosomal dominant, however spontaneous mutations are common and account for 50% of cases. May also have signs and symptoms of skeletal and central nervous system involvement. |
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Term
Neurofibroma Physical Examination |
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Definition
Soft, flesh colored protruding papule or nodule that characteristically on compression, can be invaginated into what feels like a defect in the skin- “button-hole” sign. Large plexiform neurofibromas are deeper and firmer, may become extremely large and are occasionally tender. |
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Term
Neurofibromatosis Type 1 Criteria: must contain two or more of the following.....(7) |
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Definition
1.) Six or more café-au-lait macules, 5mm or larger in children, and 15 mm or larger in adults 2.) Two or more neurofibromas of any type or one plexiform neurofibroma 3.) Axillary or inguinal freckling 4.) Optic nerve glioma 5.) Two or more Lisch nodules (iris hamartomas) 6.) Osseous lesions such as sphenoid wing dysplasia or long bone cortex thinning 7.) A first degree relative with neurofibromatosis type 1 |
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Term
____ ____ are coffee-with milk-colored macules, 99% are present by age 1. >6 are diagnostic for _____. Ophthalmologic evaluation is helpful because iris hamartomas, Lisch nodules, are found in 70% by age 10. |
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Definition
Café-au-lait spots NF (Neurofibromatosis) type 1 |
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Term
Ophthalmologic evaluation is helpful because iris hamartomas, Lisch nodules, are found in 70% of those w/ __________ by age 10. |
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Definition
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Term
Neurofibroma Differential Diagnosis: |
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Definition
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Term
Neurofibroma Laboratory and Biopsy: |
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Definition
Clinical diagnosis. MRI to detect brain hamartomas and acoustic neuromas in NF Type 2. Histology of biopsy specimen shows well circumscribed collection of fine, wavy fibers loosely packed in the dermis and stain positive for nerve fibers. |
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Term
|
Definition
None, excision, genetic counseling |
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Term
Neurofibromatosis Course and Complications |
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Definition
Solitary neurofibromas are asymptomatic, stable, no complications NF-1 is progressive- more lesions, larger lesions Plexiform neurofibromas can rarely degenerate into malignant neurofibrosarcoma. Watch for enlargement and tenderness. Central nervous system tumors Mental retardation Seizures Skeletal abnormalities; kyphoscoliosis, pseudoarthrosis, localized gigantism Precocious puberty and pheochromocytoma due to endocrine disorders. Patients with neurofibromatosis and hypertension should be screened for pheochromocytoma |
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Term
Neurofibromatosis Pathogenesis |
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Definition
Abnormal gene, NF-1, on chromosome 17, transmitted in an autosomal dominant manner in half of affected individuals, other half have spontaneous mutations. Hint for remembering which chromosome: the word neurofibromatosis has 17 letters |
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Term
Composed of lipid laden histiocytes Skin sign of hyperlipidemia |
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Definition
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Term
|
Definition
Focal collection of lipid laden histiocytes in the dermis or tendons Located in the upper dermis, they appear as yellowish papules, plaques, and nodules Located deeper, xanthomas on the tendons are fleshy appearing and hard Usually a skin manifestation of a hyperlipoproteinemic state Xanthomas are yellow tumors in the skin |
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Term
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Definition
Flat xanthomas on the eyelids are the most common, called xanthelasmas Familial hypertriglyceridemia and familial hypercholesterolemia patients who are homozygous for the disease are more likely to have xanthomas. |
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Term
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Definition
Positive family history may be elicited Past medical history may include coronary artery disease and or diabetes In addition to familial metabolic abnormality, patients may have increased alcohol use, obesity, glucose intolerance, hyperinsulinemia, and drugs including estrogens, corticosteroids, and isotretinoin. Eruptive xanthomas appear quickly within weeks and disappear rapidly after lowering triglyceride levels. |
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Term
Yellowish plaques on the eyelids. The only type that is not associated with hyperlipidemia |
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Definition
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Term
Reddish yellow papules and plaques in patient with hypertriglyceridemia, most commonly on extensor surfaces |
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Definition
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Term
Potato like papules and nodules, usually on elbows and buttocks. Associated with elevated triglycerides or cholesterol |
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Definition
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Term
Hard and stony nodules most often on the Achilles tendon and fingers. Deeper, so yellow color not appreciated. Associated with severe hypercholesterolemia |
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Definition
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Term
Xanthoma Differential Diagnosis |
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Definition
Sebaceous gland hyperplasia
Juvenile xanthogranuloma
Rheumatoid nodules |
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Term
Xanthoma Laboratory and Biopsy |
|
Definition
Clinical diagnosis Screening fasting lipid profile Biopsy shows infiltrate of numerous lipid laden histiocytes |
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Term
|
Definition
Diet- low fat, exercise
Medications- cholesterol/triglyceride lowering
Surgery- removal for cosmetic reasons |
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Term
Xanthoma Course and Complications |
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Definition
Eruptive xanthomas usually resolve when triglyceride levels are lowered, other xanthomas are more persistent |
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Term
|
Definition
Accumulation of lipid laden histiocytes Patients with familial hypertriglyceridemia have high levels of VLDL, further increased with high fat diet, alcohol, obesity or diabetes. Xanthomas resolve quickly with treatment. Patients with familial hypercholesterolemia have high levels of LDL (low density lipoproteins), xanthomas resistant to treatment. Patients at risk for early heart disease and atherosclerosis. |
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Term
Malignant vascular tumor Human herpes virus 8 may be pathogenetic Sign of AIDS, test for HIV |
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Definition
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Term
Kaposi’s Sarcoma Definition |
|
Definition
Malignant tumor derived from endothelial cells Multiple vascular tumors appear as macules, plaques, or nodules |
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Term
Kaposi’s Sarcoma Incidence: Disease occurs in three settings |
|
Definition
Classic Chronic cutaneous disorder in elderly men of eastern European descent. In USA, 0.05 per 100,000
Lymphadenopathic Aggressive, rapidly fatal Young men Equatorial Africa, 9% of all cancers
AIDS associated Most common neoplasm associated with AIDS Frequently fatal Incidence decreasing due to better antiretroviral medications TEST FOR HIV IN PATIENTS NEWLY DIAGNOSED WITH KAPOSI’S SARCOMA |
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Term
Kaposi’s Sarcoma Physical Examination |
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Definition
PURPLE macules, papules, plaques, or nodules Classic type, lesions usually on lower legs Other types, may be located anywhere and may have many lesions May involve mucous membranes |
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Term
Kaposi’s Sarcoma Differential Diagnosis |
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Definition
Bruise
Angiomas- usually redder in color
Bacillary angiomatosis- caused by bacteria and needs to be correctly diagnosed as it can be treated with erythromycin antibiotic |
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Term
Kaposi’s Sarcoma Laboratory and Biopsy |
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Definition
Diagnosis confirmed with biopsy Biopsy has proliferation of spindle cells in strands and small nodular aggregates. Spindle cells also attempt to form small blood vessels, resulting in slit like spaces filled with red blood cells. Hemorrhage is common, lymphocytes and histiocytes may also be present |
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Term
|
Definition
Local Radiation therapy for advance cutaneous disease Excision if limited number of lesion One or more chemotherapeutic agents for disseminated disease Interferon alpha- intralesional or systemic therapy |
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Term
Kaposi’s Sarcoma Course and Complications |
|
Definition
Classic progresses slowly, patients often die from other causes. Increased frequency of lymphoma and leukemia. Lymphadenopathic disseminates rapidly to internal organs and results in early death. AIDs associated, also disseminates rapidly, but may respond to therapy. Patients often die of other causes like opportunistic infections. |
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Term
Kaposi’s Sarcoma Pathogenesis |
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Definition
Malignant disease in which endothelial cells proliferate to form tumors Multiple tumors from a multifocal rather than a metastatic process In USA, most commonly found in immunosuppressed patients Epidemic occurrences in Africa and finding in HIV-negative homosexuals suggest a transmissible infectious organism Herpes virus type 8 detected in all forms- strongly implicated in pathogenetic process |
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Term
Rule out cancer for ___ dermal nodules -> Biopsy. |
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Definition
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|
Term
Although uncommon, ___ ____ may be the first sign of internal cancer |
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Definition
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|
Term
Patients with a known history of cancer, be suspicious of any new skin nodules. |
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Definition
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|
Term
|
Definition
|
|
Term
Other Malignant Dermal Tumors History |
|
Definition
Patients with a known history of cancer be suspicious of any new skin nodule Nodule itself may be asymptomatic, but may have other signs and symptoms - Weight loss - Lymphadenopathy - Fatigue - Night sweats |
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Term
Other Malignant Dermal Tumors Physical Examination |
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Definition
Hard or extremely firm nodules Flesh colored, pink, red, or purple nodules Lymphoma and myeloma nodules often plum colored Nodules may ulcerate Look for lymphadenopathy or hepatosplenomegaly |
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|
Term
Differential Diagnosis of skin metastases from internal malignancies |
|
Definition
Leukemia
- Acute myelomonocytic
- Chronic lymphocytic
- Acute lymphocytic
Lymphoma (not including mycosis fungoides)
- Non-Hodgkin’s
- Hodgkin’s
Multiple myeloma
Metastatic carcinoma |
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|
Term
•Type of carcinoma responsible for skin metastases in men & women |
|
Definition
–Women
•Breast
•Melanoma
•Ovary
•Oral cavity
•Lung
–Men
•Melanoma
•Lung
•Large intestine
•Oral cavity
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Term
Other Malignant Dermal Tumors Laboratory and biopsy |
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Definition
Biopsy is diagnostic, showing an infiltrate of malignant cells in nodular aggregates. The histological features may be tumor specific- suggesting the primary source, e.g.. Lymphoma, myeloma |
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Term
Other Malignant Dermal Tumors Therapy |
|
Definition
Excision for primary tumors Chemotherapy for metastases Palliative radiation therapy for skin metastases Treat the primary tumor |
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Term
Other Malignant Dermal Tumors Course and Complications |
|
Definition
For many diseases, the development of skin metastasis indicates a poor prognosis, e.g., acute myelomonocytic leukemia Ulcerated nodules may become secondarily infected and lead to sepsis and death. Major complications usually related to the systemic disease. |
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Term
Other Malignant Dermal Tumors Pathogenesis |
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Definition
Spread to the skin from an internal malignant disease usually by hematogenous route Also can be spread via lymphatic pathways Once in skin, malignant cells proliferate in a 3-D fashion leading to the formation of a nodule |
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|
Term
Uncommon Dermal and Subcutaneous Growths Infantile digital fibromatosis..... |
|
Definition
Rare Benign, asymptomatic Tumor of myofibroblasts Occurs at birth or by age 1 Biopsy reveals spindle shaped cells with eosinophilic inclusion bodies Usually affects finger and toes High recurrence rate with surgical excision |
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|
Term
Uncommon Dermal and Subcutaneous Growths Granular cell tumor |
|
Definition
Benign, asymptomatic Usually presents in middle age Usually solitary, in skin or tongue Biopsy reveals large polyhedral cells with a characteristic granular cytoplasm |
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|
Term
Uncommon Dermal and Subcutaneous Growths Leiomyoma |
|
Definition
Benign smooth muscle tumor Painful Solitary or grouped Autosomal dominant familial form in women associated with uterine leiomyomas |
|
|
Term
Uncommon Dermal and Subcutaneous Growths Lymphangioma circumscriptum... |
|
Definition
Benign Lymphatic tumor Usually occurs in infancy or early childhood Irregularly grouped, vesicle like papules, looks like frog eggs- “frogspawn” appearance Trauma results in weeping clear colorless lymphatic fluid Treatment difficult as usually connected to deeper lymphatic system |
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|
Term
Uncommon Dermal and Subcutaneous Growths Myxoid cyst... |
|
Definition
Also known as digital mucous cyst Solitary, opalescent or flesh colored nodule Distal interphalangeal joint or proximal nail fold where it can cause a nail plate groove Puncture release clear, viscous, sticky drainage Treatment difficult due to connection with underlying joint space and joint fluid |
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|
Term
What is the origin of the epidermal inclusion cyst? |
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Definition
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|
Term
2. Which of the below is associated with dermatofibromas? A. “frogspawn” B. “dimple sign” C. “claw like extensions” D. “buttonhole sign” E. “baboon sign” |
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Definition
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|
Term
3. What is the difference between a keloid and a hypertrophic scar? A. A hypertrophic scar expands beyond the original trauma site while the keloid stays within the original area of trauma. B. Both hypertrophic scar and keloid expand beyond the site of original trauma but the hypertrophic scar will regress. C. A keloid expands beyond the original trauma site while the hypertrophic scar stays within the original area of trauma. D. Both the hypertrophic scar and keloid stay within the site of original trauma but the hypertrophic scar will regress. E. The term keloid can be interchanged with the term hypertrophic scar. |
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Definition
c. Keloid expands beyond original site of trauma. |
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Term
4. All of the below are correct statement about lipomas except:
A. Lipomas are benign B. Lipomas are slow growing or stable C. Lipomas are freely movable beneath the skin D. Lipomas have a hard consistency E. Lipomas are composed of fatty tissue |
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Definition
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Term
5. A 30 year old male presents to your clinic with new onset of multiple purple macules and plaques. He admits to multiple partners and occasional use of condoms. You take a punch biopsy. What else should you do? A. Draw blood for CBC B. Draw blood for serologic HIV test C. Send patient for a fasting lipid panel D. Send patient for CT scan or MRI E. Draw blood for metabolic panel |
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Definition
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