Swelling and deformity of the left-hand 3rd finger middle phalanx.
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Well defined lytic expansile lesion with the narrow zone of transition is noted at the middle phalanx head of the 3rd finger.
No fracture and periosteal reaction. No matrix calcification or ossification.
No other lesions. No soft tissue calcification.
Enchondroma is a benign cartilaginous neoplasm in the medullary cavity. Most enchondromas are
asymptomatic but may present as pathological fractures. Peak age is 10-30 years.