Extensive metastatic papillary serous carcinoma to thoracic and abdominal lymph nodes, multiple small intestinal, peri-biliary and splenic capsular metastases. They are tumors in which both the epithelial and non-epithelial components are histologically malignant. They are further subdivided into homologous and heterologous types. The most common presenting symptom is post- menopausal uterine bleeding. Other symptoms include lower abdominal pain, abdominal distention, and a palpable abdominal mass are also frequent presenting complaints.
Many patients have clinical evidence of extensive extrauterine disease at initial presentation.
Grossly, carcinosarcomas present as a large, soft, friable polypoid tumors, involving endometrium and myometrium, and usually fill the endometrial cavity. Many of them are so large that they protrude through the external os. The surface is often smooth and the cut surface is more fleshy, variegated, hemorrhagic and necrotic. MMT of the endometrium extends to the endocervix in about a quarter of cases. MMT may also arise in the cervix, where it growth as a polypoid neoplasm.