Synchronous carcinosarcoma of the uterine cervix with adenoid basal carcinoma and cervical intraepithelial neoplasia III: A case report and literature review.

Carcinosarcoma and adenoid basal carcinoma (ABC) are both rare lesions in uterine cervix. There were only 5 cases of cervical carcinosarcoma combined with ABC and/without cervical intraepithelial neoplasia (CIN) reported in English literature. These limited studies showed that there was a strong association between HPV, carcinosarcoma, ABC and CIN, suggesting a common etiology for these lesions. Here, we present the case of a 65-year-old woman with cervical carcinosarcoma combined with ABC and CIN III. However, HPV-16, 18, 31 and 33 was negative in the cervical carcinosarcoma tissue by in situ hybridization detection. It indicated that there might be other subtype of HPV involved, or, HPV might play a role in some but not all cervical carcinosarcomas.