Exam 2 - primary bone tumor chart

is osteoid osteoma benign or malignant? what is its size?

benign

<2 cm

where is osteoid osteoma commonly found? who is it more common in?

cortex of tibia/fibula

10-20 males

is osteoblastoma benign or malignant? what is its size?

benign

2+ cm

where is osteoblastoma usually found? in who?

spine

10-20 males

is osteosarcoma benign or malignant? what is the size?

malignant

fairly large

where are osteosarcomas commonly found?? in who?

metaphysis of bones of knee

10-20 males

is osteochondroma benign or malignant? relative size?

benign

fairly large

where is osteochondroma commonly found? who?

metaphysis of bones of knee

10-30 males

is enchondroma benign or malignant? relative size?

benign

fairly small

where are enchondromas located? who?

bone of hands

20-50 males

is chondrosarcoma benign or malignant? relative size?

malignant

fairly large

where are chondrosarcomas commonly found? who?

bone of shoulder and pelvic girdle

40-60 males

is Ewing Sarcoma benign or malignant? relative size?

malignant

fairly large

where is Ewing Sarcoma commonly found? who?

diaphysis of long bones (MC femur)

<20 Caucasian males

are giant cells (osteoclastoma) benign or malignant? relative size?

benign with malignant potential

large

can giant cells be aggressive

yes, locally

where are giant cells (osteoclastomas) commonly found? who?

epiphysis of long bones: knee, hip, wrist

20-40 women

is a fibrous cortical defect considered a neoplasm?

no

what is the relative size of fibrous cortical defect? where is it found?

<3 cm

metaphysis or diaphysis of lower extremity long bones

who commonly has fibrous cortical defect

children

is nonossifying fibroma considered a neoplasm? what is its relative size?

no

>3 cm

where are nonossifying fibromas commonly found? in who?

metaphysis or diaphysis of lower extremity long bones

children

is fibrous dysplasia benign or malignant?

benign proliferation of fibrous tissue and woven bone

what is the relative size of fibrous dysplasia

fairly large

but variable

where is fibrous dysplasia commonly found? in who?

ribs, calvaria, mandible, femur, humerus

children into adulthood