6 months after labour a woman had uterine hemorrhage. Gynaecological examination of uterine cavity revealed a dark-red tissue with multiple cavities resembling of a "sponge". Microscopic examination of a tumour revealed in blood lacunas atypic light epithelial Langhans cells and giant cells of syncyti-otrophoblast. What tumour is it?

Answer options

1. Squamous cell nonkeratinous carcinoma
2. Fibromyoma
3. Adenocarcinoma
4. Chorioepithelioma
5. Cystic mole

Explanation

Chorioepithelioma or choriocarcinoma is a malignant, trophoblastic cancer, usually of the placenta. The characteristic feature is the identification of intimately related syncytiotrophoblasts and cytotrophoblasts without the formation of definite placental type villi.