<s>[INST] Female 47 years, LAVH done 4 months back c/o Pain lower abdomen, USG & CT abdomen revealed Left adenexal mass ? Malignancy- contrast enhancing 8+ 5 cms.H/O hypothyroidism on 150mg eltroxin,T2 DM on insulin.Laporotomy done solid left adenexal tumor removed.What could be the probable diagnosis? H/O of 2LSCS uneventful Both ovaries & uterus were removed intact during LAVH. Kindly respond [/INST] Ovarian malignancy is one possibility but not the only possibility. Possibility of ovarian malignancy is considered since you said it was complex ovarian cyst. Sometimes non malignant cysts like theca lutein cysts can also be large. Biopsy would give definitive answer </s>