Bone CA Flashcards
Codman’s triangle (elevation of perisosteum)
Osteosarcoma and Ewing’s sarcoma
Most common bone malignancy in adolescents
Osteosarcoma
90% occur in the metaphysis of long bones (MC in distal femur, proximal tibia, proximal humerus).
Osteosarcoma
PUNCTATE OR RING & ARC APPEARANCE on XR
Chondrosarcoma
systemic infection such as fever and irritability in addition to localized bone pain and swelling.
osteomyelitis
Management is usually observation
Osteochondroma
benign bone tumor and is characterized by a well-defined or sclerotic border, lack of destruction of the cortex, and lack of extension into the soft tissue on XR
Chondroblastoma
Neonate with osteomylelits
Haemophilus Influenzae or GBHS
Most common bone CA in children, 2nd MC malignancy
Ewing’s Onion Skin Sarcoma
Surgical resection is 1st treatment of choice over Chemo
Chondrosarcoma
MC METS to the lungs
Osteosarcoma
Sickle cell patient with osteomyelitis
Salmonella
periosteal reaction
Osteosarcoma
Patients with sickle cell high risk for…
osteomyelitis from Salmonella
Often PEDUNCULATED, GROWS AWAY FROM GROWTH PLATE and involves medullary tissue on XR
Osteochondroma
ionizing radiation for treatment is a risk factor and occurs within two decades of Tx for this childhood bone CA
Osteosarcoma
IV drug user with osteomyelitis
E. Coli, Pseudamonas, Klebsiella
Most common sites of Ewing Sarcoma
Femur and pelvis
“HAIR ON END” or “SUN RAY /BURST” appearance on XR
Osteosarcoma
Onion skin on XR
Ewing’s Sarcoma
Most common pathogen for osteomyelitis
S. Aureus
Most common benign bone tumor in childhood
Osteochondroma
Nocturnal pain unrelated to activity and relieved with NSAIDs or ASA
Osteoid Osteoma
2nd peak 50-60y (especially if history of Paget disease of the bone or radiation therapy).
Osteosarcoma
