The authors report a new case of a Mullerian mixed tumor with malignant double composition with homologous tissue. They are uncommon, probably sometimes unrecognised. These tumors have the same clinical expression but their prognosis is linked to their benign or malignant composition. The treatment proposed by different authors is radical even for benign tumors in the fear of malignant evolution. The number of cases is not sufficient to propose a more economic treatment tested on patients.