Presentation
Hard palpable mass on the left thigh. Pain if sleeping on her side or crossing her legs.
Patient Data
Stalk-like bony outgrowth with medullary and cortical continuity projecting away from the distal femur metaphysis. There's no periosteal reaction.
Classic appearance of a pedunculated osteochondroma.
Lump noted on the medial aspect of the left thigh.
Case Discussion
Osteochondromas are common benign bone tumors.
Their presentation is usually asymptomatic, but they can occasionally cause symptoms due to mechanical irritation of surrounding soft tissues.
Malignant degeneration, most commonly into chondrosarcomas, is a rare complication.
Treatment is surgical resection and is usually unnecessary unless the lesion is symptomatic or shows signs of malignant transformation.
In this case, the patient was symptomatic and the lesion was resected. Histopathology confirmed the diagnosis of osteochondroma.
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