[Carcinosarcoma (malignant mixed Müllerian tumor) arising in an endometrial polyp. Report of a case].

Malignant degeneration of an endometrial polyp occurs rarely, i.e. approx. 0.36%. In literature the rare cases of carcinosarcomatous degeneration of an endometrial polyp described are mostly associated with a good prognosis. The following is a description of an other case of carcinosarcoma arisen and confined to an endometrial polyp, but characterised by a particularly aggressive clinical course.