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Neoplasm
n/a
42
Medical
Pre-School
07/11/2012

Additional Medical Flashcards

 


 

Cards

Term
Hepatoma (liver cells) and Melanoma (neuroectoderm)
are actually...
Definition
Carcinomas (Malignant)
Term
pleomorphism, hyperchromatism, increased N:C ratio, abundant mitoses
Definition
dysplasia
Term
pleomorphism, hyperchromatism, increased N:C ratio + abnormal mitoses
Definition
anaplasia
Term
Only feature that differentiates anaplasia from dysplasia
Definition
abnormal mitoses
Term
means that more than two daughter cells created or two daughter cells are not equal in size
Definition
abnormal mitoses
Term
anaplasia is only seen in
Definition
malignant neoplasia
Term
anaphasia is not seen in
Definition
benign neoplasia
Term
major characteristic of malignancy
Definition
anaplasia
Term
this type of tumor has a capsule
Definition
benign
Term
this type of tumor extends by invasion and has no capusle
Definition
malignant
Term
mitotic figures normal in this neoplasm type
Definition
benign
Term
hallmark of malignant tumor
Definition
metastasis
Term
gliomas of CNS (glioblastoma multiforme) and basal cell carinomas of skin (face often) are two exceptions of malignant tumors that do not show the hallmark,
Definition
metastasis
Term
tumor type often show large nucleoli, tumor giant cells and hyperochromatic
Definition
maligant
Term
constitutional effects are rare with benign tumors except for
Definition
endocrine adenomas
Term
seeding of body cavities and surface
Definition
transcoelomic spread
Term
metastases from mucous secreting carcinomas of ovary or appendix
Definition
Pseudomyxoma peritonei
Term
metastatic tumor masses in ovaries, result of spread through peritoneal cavity from primary carcinoma of stomach
Definition
Krukenberg tumor
Term
tumor cells may be destroyed in lymph nodes by immune mechanisms consisting of proliferation of T cells and histiocytes
Definition
sinus histiocytosis
Term
brain, liver, bone affected by
Definition
arterial spread
Term
often causes vertebral metastasis
Definition
carcinoma thyroid, prostate
Term
Grade I-IV of cancer based on number of mitosis and degree of differentiation
1-4 based on increased
Definition
anaplasia
Term
based on
1) size of tumor
2) extent of spread to regional lymph nodes
3) presence or absence of metastases
Definition
Stage
Term
TNM system; T is 0-4
refers to
Definition
size
Term
TNM system T = 0
Definition
carcinoma in situ
Term
TNM system
N =
Definition
nodule involvement
Term
TNM system
N = 0
Definition
no nodule invovlement
Term
preinvasive stage of malignant epithelioid tumor,
displays all cytological features of malignancy
commonly seen in epithelium, basement membrane INTACT, does not invade subepithelial tissues
Definition
carcinoma in situ
Term
which is more rare polyclonal tumors or monolonal?
Definition
polyclonal
Term
acquisition of heterogeneicity refered to as
Definition
tumor progression
Term
promotes vascularization of neoplasm
Definition
TAF (tumor angiogenesis factor)
Term
Examples:
cancer of lungs -> pericardium

breast cancer -> chest muscle (immovable)
Definition
Direct Local invasion
Term
Examples:
Pseudomyxoma Peritonei: carcinoma of ovary or appendix that fills peritoneal cavity

Krukenberg tumor:
starts in stomach classically then heads to ovary through peritoneal cavity
Definition
Transcoelomic spread
Term
Hematological spread from ARTERIES of lungs usually metastasizes in
Definition
brain (most common), liver, bone
Term
important enzymes in cancer spreading
Definition
proteases and metalloproteinases
Term
These cells are less tightly adherant that normal cells
Definition
malignant cells
Term
Calcium is lower, leading to increased negative charge and causes these cells to repel each other
Definition
malignant cells
Term
adheision of basement membrane and penetration through ECM by tuor cells is accomplished by receptor mediated binding of
Definition
laminin and fibronectin
Term
malignant tumors rarely spread to these areas because of enzymatic environment present
Definition
spleen, muscle
Term
prostatic carcinoma preferentailly spreads to
Definition
bone
Term
neuroblastomas preferentially spread to
Definition
liver, bones, etc.
Term
bronchogenic carcinomas preferentially spread to
Definition
adrenals, and brain
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