Term
| Small Round Blue Cells (4) |
|
Definition
1. Infection- Polymorphic
2. Ewings- Monomorphic
3. Langherhans- Mostly Monomorphic
4. Rhabdomyosarcoma |
|
|
Term
|
Definition
Langerhans
UBC
NOF
ABC
Chondromyxofibroma
Enchondroma
Fibrous Dysplasia |
|
|
Term
| Langerhans Cell Histiocytosis |
|
Definition
Age 5-10
Blue Cells are clef or elongated
Punched out cranial lesion
Vertebra plana
Local treatment is observe or steroid
Systemic is chemo |
|
|
Term
|
Definition
Age 5-10
Metaphyseal up to growth plate and width of native bone
No treatment for pathologic fx
Wont show pathology |
|
|
Term
|
Definition
Age 5-10
Aneurysmal
Fluid Line
Blood in cavity
Curette |
|
|
Term
|
Definition
Age 5-10
Proximal tibia and looks like ABC
Histo w/out blood.
Bloc Excision |
|
|
Term
|
Definition
Age 5-10
Hand and feet
Observe or curretage
No chondrosarc in hands or feet of peds |
|
|
Term
|
Definition
Ground Glass
Bland cellular background with random osteoid
Diffuse polyostotic
Cafe Au lait (coast of Maine)
GNAS Affects cAMP
Bisphosphonates or operate on fx |
|
|
Term
|
Definition
Osteosarcoma
Ewings
Telangiectic Osteosarcoma |
|
|
Term
|
Definition
Abnormal mitotic figure often making bone
Around Knee
Sunburst, codmans triangle
Chemo and Wide resection |
|
|
Term
| Telangiectic Osteosarcoma |
|
Definition
Equal survival to Osteosarcoma
Blood cavities |
|
|
Term
|
Definition
Monomorphic small blue cells, CD99+
PNET
Onion Skinning
Chemo+ Wide resection |
|
|
Term
|
Definition
|
|
Term
|
Definition
Abundance of multinucleated giant cells
Metaphyseal/Epiphyseal, up to subchondral
Currettage and Stabilization |
|
|
Term
|
Definition
Little Blue cell, Monomorphic
Hx of Lymphoma |
|
|
Term
|
Definition
Chondrosarcoma
Dedifferentiated chondrosarcoma
Malignant Fibrous Histiocytoma
Myeloma
Metastatic Carcinoma |
|
|
Term
|
Definition
Normal Bone surrounded by cartilage
Most common Primary
Calcification in lesion and destructive
Wide resection |
|
|
Term
| Dedifferentiatied chondrosarcoma |
|
Definition
Poor Prognosis
Hypercellular abutting hypocellular
Wide Resection |
|
|
Term
| Malignant Fibrous Histiocytoma |
|
Definition
Very aggressive lesion not metastatic
No bone formation
Preop chemo and resection |
|
|
Term
|
Definition
Epiphyseal in youngish people
Open or nearly open physis
Curettage |
|
|
Term
|
Definition
Over 30
Similar to chondroblastoma |
|
|
Term
| Osteofibrous dysplasia/Adamantinoma |
|
Definition
Tibial in the cortex
OFD is teenager
Older is Adamantinoma
Wide Resection |
|
|
Term
|
Definition
Spine/Sacrum Anteriorly
Soap Bubbles |
|
|
Term
| Osteoid Osteoma/Osteoblastoma |
|
Definition
<2cm is Osteoma
Painful Scoliosis is common
Radiofrequency ablation in pain
Target cells |
|
|
Term
|
Definition
Increased Osteoclast
Osteoclasts cutting bone
AD 5th decade
Bowing of femur. Disorganize multiple lines
Bisphosphonates |
|
|
Term
|
Definition
Bland Stroma and Bony Trabeculae
Well differentiated on bone
Resection |
|
|
