Solid tumour with cystic areas and haemorrhagic fluid?

Solid tumour with cystic areas in between filled with haemorrhagic fluid and accounting for about 20% of all ovarian cancers is?
A. Cystadenocarcinoma
B. Mesonephroid tumors
C. Endometrioid tumour
D. Brenner tumour

Correct answer : C. Endometrioid tumour

Ovarian-cancer-CT-scan

Endometrioid tumours account for about 20% of all ovarian cancers.
They are mostly malignant.
They are lined by glandular epithelium.
They are moderate sized solid tumours with cystic areas in between filled with haemorrhagic fluid.
Ovarian endometriosis coexist in 15% of cases.
Ref: Shaw’s Textbook of Gynaecology, 15th edition, p375.