An Endometrioma is AKA?

• A. Ovarian abscess
• B. Corpus luteum cyst
• C. Chocolate cyst
• D. Serous cystadenoma

Answer: (C)

Endometrioma is commonly known as a chocolate cyst. This name comes from its origin: ectopic endometrial tissue implants in the ovary, cycles with the menstrual period, and bleeds inside the cyst. The blood products darken over time, giving the contents a thick, brown, chocolate-like appearance. That distinctive coloration is what earned the nickname and helps differentiate it from other ovarian cysts.

This condition is a manifestation of endometriosis, not an infection or a simple functional cyst. It contrasts with an ovarian abscess, which is filled with pus from an infection; with a corpus luteum cyst, which is a normal, post-ovulation functional cyst; and with a serous cystadenoma, which is a benign tumor arising from ovarian epithelium and contains serous fluid. The chocolate cyst label specifically points to the endometriotic origin and the characteristic brown contents inside the ovary.