bone Flashcards
high yield associations for ewings sarcoma
neuroectodermal tumor. diaphysis of long bones usually in male children. onion-skinning appearance on XR. small blue cells (lymphocytes). 11:22 translocation.
high yield associations for giant cell tumor
only tumor of epiphysis. young adults. distal femur or proximal tibia. SOAP-BUBBLE appearance that is locally aggressive.
high yield associations for chondroma
benign of the cartilage. normally arises in the medulla of the small bones of the hands and feet.
high yield associations for chondrosarcoma
malignant. arises in the medulla of pelvis or central skeleton.
high yield associations for metastatic tumors of bone
more common than primary. typically osteoclastic forming punched-out lytic lesions.
high yield associations for prostatic metastatic to bone
this is an exception to normal metastatic tumors of the bone because it is osteoblastic, rather than osteoclastic.
high yield associations for osteosarcoma
malignant of osteoBLASTS. peaks in teens and elderly. RB gene is risk, as well as pagets disease and fractures. common locations: distal femur and proximal tibia. presents as fractures with bone pain and swelling. destructive lesions in bone that drags the periosteum with it creating codman’s angle. pleomorphic cells with osteoid production.
high yield associations for osteochondroma
tumor with overlying cartilage. lateral projection of the growth plate. can become malignant.
high yield associations for osteoblastoma
larger than 2 cm. arises in vertebrae. pain does not respond to ASA. similar to osteoid osteoma.
high yield associations for osteoid osteoma
benign tumor of osteoblasts. radiolucent osteoid core with a rim of reactive bone. young adults <25 in the cortex of long bone typically femur. bone pain that RESOLVES with ASA (distinguishes it from osteoblastoma).
high yield associations for osteoma
benign tumor arising from the facial bone surface
