ABSTRACT

Periosteal chondroma is a rare and benign cartilage tumor seen mostly in long bones and in patients under 30 years of age. In this case report, it is aimed to present a 16-year-old female patient with a periosteal chondroma in the distal femur.

A 16-year-old female patient was admitted to the hospital with the history of pain in her distal part of right thigh. A superficial cortical erosion with well-defined borders without any relation to the intramedullary area was seen in magnetic resonance imaging. The lesion was regarded as periosteal chondroma and marginal excision was performed.

This case report shows the importance of the differential diagnosis in cortical lesions. Periosteal chondroma may be considered when a patient has a history of long term pain in adolescent age group.

Keywords: Chondroma, thigh, adolescent, periosteum