Tumors MC ages and sites Flashcards
1
Q
Osteoma MC Sites
A
Calvarium Paranasal Sinuses -esp ethmoid and frontal NOT common in maxillary Sometimes in mandible Gardener Synd.- multiple osteomas + colonic polyps
2
Q
Osteoid Osteoma MC Sites
A
50% in tibia and femur
10% in spine (1 of the 3)
Long Bones- Met. or Di.
3
Q
Osteoid Osteoma MC ages
A
Before 25 (90%)
4
Q
Osteoblastoma MC sites
A
30-50% in post arch (*1 of the 3)
30% in long bone
-femur and tibia MC
-Met. or Di.
5
Q
Osteosarcoma MC ages
A
10-25 y/o (75%)
6
Q
Osteosarcoma MC sites
A
Knee and proximal Humerus- reported almost everywhere
- Metaphysis
- rare in spine
7
Q
Parosteal Osteosaroma MC ages
A
2nd-4th decades
8
Q
Parosteal Osteosarcoma MC sites
A
- long bones
- 92% in femur, tibia, and humerus
- most remaining in fibula, radius, and ulna
9
Q
Enchondroma MC sites
A
small bones of hands
- NOT common in distal phalanges or carpals
- femur (14%), humerus (13%, ribs (13%)
10
Q
Osteochondroma MC sites
A
*long bones
-50% in lower extremity, esp femur and tibia
-18% in humerus
Metaphysis
11
Q
Osteochondroma MC ages
A
Childhood
12
Q
Chondroblastoma MC ages
A
10-25 peak
13
Q
Chondroblastoma MC sites
A
*long bones Femur (distal) Tibia (prox) Humerus (prox) ***Subarticular
14
Q
Chondrosarcoma MC sites
A
Inominate
Prox Femur
Ribs
15
Q
Chondrosarcoma MC ages
A
50% 20-40
50% >40
