Concerning osteosarcoma:
A- Is more common in male. True
B- Is usually affects the diaphysis… False (Metaphesis and 75% around the knee).
C- Codman's triangle is pathognomonic. False (It signify rapid soft tissue extension outside the cortex, whether this is due to tumor, blood, pus…)
D- Parosteal osteosarcoma carries a good prognosis. True
E- Parosteal osteosarcoma affects male and female equally... True
A- Is more common in male. True
B- Is usually affects the diaphysis… False (Metaphesis and 75% around the knee).
C- Codman's triangle is pathognomonic. False (It signify rapid soft tissue extension outside the cortex, whether this is due to tumor, blood, pus…)
D- Parosteal osteosarcoma carries a good prognosis. True
E- Parosteal osteosarcoma affects male and female equally... True
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Radiology MCQ