Gynaecology & Obstetrics A 30 yrs nulliparous patient with primary infeility presents with a pelvic mass, the CA – 125 = 90 U/L. Most probable cause is? A Epithelial ovarian cancer B Dysgerminoma C Borderline ovarian tumour D Endometrioma 💡 Explanation A 30 yrs nulliparous patient with primary infeility presents with a pelvic mass, the CA - 125 = 90 U/L. Most probable cause is? ✓ Correct Answer: D. Endometrioma