The malignant type of serous tumors are called serous cystadenocarcinomas, and malignant mucinous tumors are called mucinous cystadenocarcinomas.

恶性浆液性肿瘤被称为浆液性囊腺癌，而恶性黏液性肿瘤也称黏液性囊腺癌。

Finally, the last category of neoplastic cysts include malignant ovarian tumours, like serous or mucinous cystadenocarcinomas, which develop from surface ovarian epithelium, just like their benign counterparts.

最后一种赘生性囊肿为卵巢恶性肿瘤，如浆液或黏液囊腺癌，和良性的囊腺瘤相似，它们也由表面的卵巢上皮形成。

A feature of mucinous cystadenocarcinomas is that they can cause pseudomyxoma peritonei, which is when mucinous material from the tumor spills out and collects in the peritoneal cavity.

黏液性囊腺癌的特点是它们可以导致腹膜假黏液瘤，是当肿瘤中的黏液物质漏出并汇集于腹腔时形成的。