[Generalized polyostotic fibrous dysplasia with subtrochanteric fracture. A case report].

Fibrous dysplasia affects principally bone, but it might comprise extraskeletal anomalies; bone is replaced by dysplastic fibrous tissue. It is classified accordingly to the number of affected bones, and its association to endocrine alterations in: monostotic, polyostotic and Albright's disease. A congenital etiology is suggested. Pathologic fractures are the most frequently associated complications. We present a case with a subtrochanteric fracture caused by fibrous dysplasia, and a comprehensive review of diagnosis and treatment decision making. Differential diagnosis with multiple myeloma among others, and best treatment decision was made.