Carcinosarcoma may arise in -
Carcinosarcoma of uterus

Carcinosarcomas consist of endometrial adenocarcinoma in which malignant sarcomatous (stromal) differentiation takes place.
Carcinosarcoma has two components : -


Adenocarcinoma → Therefore called carcinosarcoma
Sarcomatous component → Therefore called carcinosarcoma


Sarcomatous component may be striated muscle cells, cartilage, adipose tissue and bone.
Uterus
Cervix
Vagina
Ovary