Carcinosarcomas of the fallopian tube are extremely rare tumors with poor prognosis. They are more frequent in women in the fifth or sixth decade and often revealed by abdominal pain or gynecological bleeding. The author reports the rare case of a 73-year-old women presenting with post-menopausal gynecological intermittent bleeding for two months. Ultrasonography and MRI showed a four-cm heterogeneous right annexial mass. Right annexectomy by laparoscopy showed a malignant tumor. The patient underwent total hysterectomy, a bilateral salpingo-oophorectomy, appendectomy, omentectomy, and pelvic and lombo-aortic lymph node dissections. Pathologic diagnosis revealed a non-heterologous carcinosarcoma arising from the right fallopian tube: pT1c N0, FIGO Stage IC. Six cycles of adjuvant chemotherapy paclitaxel+carboplatin were decided. Computed tomography scan after three cycles did not show any sign of recurrence. The patient is following chemotherapy. Because fallopian tube carcinomas are a very rare disease, no standard therapy exists. Data from many institutions may improve knowledge and management.