[Extra-abdominal desmoid fibroma and pulmonary metastases. (New Caledonia)]

A 22 years old Melanesian patient had a tumor in the anterior and external side of the left leg. Three times, this tumor had a surgical treatment, by resection, then an amputation of the leg. Always, its histological aspect was agreeing with a desmoid fibroma. After an evolution of 23 months time, metastases appeared in the lungs. Most of the authors don't agree the existence of metastases in these tumors. Four observations were reported in the literature, including one in 1989. They emphasize the difficulties of the histological diagnosis of these tumors. The metastases seems to be an argument in the evolution, which incites to modify the initial diagnosis as a fibrosarcoma in spite of the lack of obvious histological malignancy.