Primary malignant mixed Mullerian tumour of the fallopian tube: a rare and difficult but possible diagnosis

Malignant tumours of the fallopian tube are very rare. The most common histological type is high-grade serous adenocarcinoma. Sarcomas occur infrequently and carcinosarcomas or malignant mixed Mullerian tumours (MMMTs) are extremely rare (0.1–0.5% of all gynaecological malignancies, with only about 60 cases reported in the literature).1–3 MMMTs, by definition, contain malignant stromal and epithelial elements. They are characteristically high-grade, have aggressive behaviour and poor prognosis.3 Given its rarity and location, the definitive diagnosis of primary fallopian tube MMMT is difficult to perform and to prove, and in the great majority of cases the diagnosis remains uncertain until the histological evaluation (ovarian tumour is the …