Enchondroma

Case contributed by Henry Knipe
Diagnosis probable

Presentation

Work up of incidental finding on chest x-ray.

Patient Data

Age: 50 years
Gender: Male
x-ray

Ill-defined lucency with chondroid type matrix within the proximal humeral metadiaphysis. No bone destruction or periosteal reaction. 

Case Discussion

This is most likely an enchondroma, sometimes it can be difficult to differentiate from low-grade chondrosarcomas both on imaging and pathologically. 

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