<unk>  is a type of tumor in the cystadenocarcinoma grouping. It can occur in the breast as well as in the ovary. Tumors are normally multilocular with various smooth, thin walled cysts. Within the cysts is found a haemorrhagic or cellular debris.
Mucinous cystadenocarcinoma
Papillary serous cystadenocarcinoma
Serous cystadenocarcinoma
Mucinous cystadenoma
Eccrine carcinoma
Sclerosing polycystic adenosis
Microcystic adnexal carcinoma
Clear-cell ovarian carcinoma