Tumors MC ages and sites Flashcards
(32 cards)
Osteoma MC Sites
Calvarium Paranasal Sinuses -esp ethmoid and frontal NOT common in maxillary Sometimes in mandible Gardener Synd.- multiple osteomas + colonic polyps
Osteoid Osteoma MC Sites
50% in tibia and femur
10% in spine (1 of the 3)
Long Bones- Met. or Di.
Osteoid Osteoma MC ages
Before 25 (90%)
Osteoblastoma MC sites
30-50% in post arch (*1 of the 3)
30% in long bone
-femur and tibia MC
-Met. or Di.
Osteosarcoma MC ages
10-25 y/o (75%)
Osteosarcoma MC sites
Knee and proximal Humerus- reported almost everywhere
- Metaphysis
- rare in spine
Parosteal Osteosaroma MC ages
2nd-4th decades
Parosteal Osteosarcoma MC sites
- long bones
- 92% in femur, tibia, and humerus
- most remaining in fibula, radius, and ulna
Enchondroma MC sites
small bones of hands
- NOT common in distal phalanges or carpals
- femur (14%), humerus (13%, ribs (13%)
Osteochondroma MC sites
*long bones
-50% in lower extremity, esp femur and tibia
-18% in humerus
Metaphysis
Osteochondroma MC ages
Childhood
Chondroblastoma MC ages
10-25 peak
Chondroblastoma MC sites
*long bones Femur (distal) Tibia (prox) Humerus (prox) ***Subarticular
Chondrosarcoma MC sites
Inominate
Prox Femur
Ribs
Chondrosarcoma MC ages
50% 20-40
50% >40
Giant Cell Tumor (Osteoclastoma) MC ages
20-40
Giant Cell tumor MC sites
Femur (distal) > Radius (distal) > Humerus (proximal)
**Subarticular
Hemangioma MC sites
Vertebral Body
may extend into pedicles, TPs
D/Dx of Osteoblastoma includes…
ABC
D/Dx of Enchondroma should include…
Medullary Bone infarct
D/Dx of Chondroblastoma includes…
Giant Cell Tumor (Osteoclastoma)
Unicameral Bone Cyst MC ages
3-14 yrs. (80%)
Unicameral Bone Cyst MC sites
Prox humerus and Prox Femur
after 17, pelvis and calcaneus
*not common @ knee
D/Dx of Non-Ossifying Fibroma includes…
ABC, Fibrous Dysplasia, and other benign expansile lesions
