Case contributed by Dr MT Niknejad


Small painless palpable mass at the medial aspect of the right knee on physical exam.

Patient Data

Age: 15 years
Gender: Male

 A small osseous exophytic overgrowth is observed along the medial aspect of the distal femur, showing cortical and medullary continuity with the underlying bone. The cortex is smooth, without evidence of disruption or erosion. No periosteal reaction.

Case Discussion

Features are consistent with an osteochondroma that is a frequently asymptomatic lesion and have very low malignant potential if sporadic and solitary.

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