Chondromyxoid fibroma: a rare tumor with an unusual location.

Chondromyxoid fibroma constitutes a rare benign tumor of the bones, which has a potential of regional enlargement towards the local tissues. An adult male patient at the age of 28 suffered a fracture of the lateral malleolus due to an eccentric, lytic, lobular lesion in the epiphysis, during a basketball match. The differential diagnosis included the chondroblastoma, the aneurysmal cyst and the chondrosarcoma. After the removal of the tumor with curettage, both with curette and with a high-speed burr, osseous cement was placed in the cavity of the lesion. The biopsy of the tumor confirmed the diagnosis of the chondromyxoid fibroma. This is the first unusual location of the tumor in the national bibliography. The patient after 5 years post-operatively does not show either clinical or radiological signs of regional recurrence of the tumor.