Benign Bone Tumors
A 16-year-old boy presents with a painless bony mass near his right knee that he has noticed for 2 years. The mass has grown slowly and causes no functional limitation. He has no family history of similar lesions. Examination reveals a firm, non-tender mass arising from the distal femur metaphysis, pointing away from the joint. Radiographs show a sessile bony projection continuous with the underlying bone cortex and medulla. MRI shows a cartilage cap less than 1cm thick. Regarding osteochondromas:
Mark each as TRUE or FALSE
Osteochondroma (exostosis) is the most common benign bone tumor, representing 35-40% of benign bone ...
The cartilage cap (remnant of growth plate cartilage) undergoes enchondral ossification producing th...
Osteochondroma is a malignant tumor; it grows toward the adjacent joint; the cortex and medulla are ...
Hereditary Multiple Exostoses (HME/MHE) is an autosomal dominant condition with mutations in EXT1 or...
Asymptomatic osteochondromas can be observed; surgical excision is indicated for symptomatic lesions...
Answer the questions to see explanations
Click T (True) or F (False) for each option