Introduction: In ovarian tumours diverse histopathologies are common reflecting the different cell origins of the tumours. Ovarian cancer is the one of the common cancer among females of India and continues to present at an advanced stage. Aims and Objectives: To study USG versus Histopathological diagnosis of ovarian masses at tertiary care center. Methodology:After approval from Institutional ethical committee, this prospective study was conducted at Department of Obstetrics and Gynecology during the period of September 2013 to September 2015 on 100 women who were randomly selected among the women attending the hospital’s Obstetrics and Gynecology OPD with: Menstrual irregularities, Pelvic inflammatory disease, chronic pelvic pain, mass per abdomen. Patientsunderwent transvaginal / transabdominal ultrasound.Initially diagnosis of mass done by sonography later on by histopathology. Result: Ultrasonography suggested that there were 30% cases of PCOS, 21% cases of benign ovarian cyst, 17% cases of benign ovarian tumor and 11% cases were of dermoid cyst, 9% functional cyst, 7% haemorrhagic cyst, 3% chocolate cyst, 2% malignant ovarian tumor. HPE reports found that the most common mass was serous cyst adenoma 26%, Mucinous cyst adenoma 12%, Cystic teratoma 11%, Chocolate cyst 3%, serous cyst adenocarcinoma 2%. Conclusion: The ovarian tumors are detected effectively by Ultrasound but the nature of pathology i.e. Benign or Malignant is confirmed by histopathology so both these investigations be done in patients for accurate diagnosis of the ovarian masses.

Keywords: Ovarian Masses; PCOS; Benign Ovarian Tumor; Hemorrhagiccyst; Chocolate Cyst; Malignant Ovarian Tumor; Cystic Teratoma