[Diagnostic problems in a case of chronic expanding hematoma]. / Probleme de diagnostic într-un caz rar de hematom cronic expansiv.

We present a case of chronic expanding hematoma occurring in the right medial thigh. The patient was an 86 year-old woman who had this mass with slowly growth 3 years before. Ultrasonography showed a multilocular cyst and computed tomography an image of heterogeneous mass with capsule formation. A diagnose was unable to perform through both methods, which was confirmed by histopathological exam after successful surgical treatment. Microscopically, a fibrous pseudocapsule and in the central cavities blood clot, fibrin and necrotic debris were described.