Background: Diagnosis of malignancy in ovarian tumour is always questionable clinically as well as by investigation. Ovarian tumour arise in any age group and any type of body tissue present in tumour like epithelial tissues, germ cells, embryonic cells due to varied histology of ovary and metastatic non ovarian tumours. Aim and objective of the study was to study the correlation ovarian masses regarding their clinical presentation investigation and histo-pathological report.Methods: All the women who presented with lump and/or pain or menstrual problem attending Gynecology, Surgery and oncology OPD of GMCH, Udaipur. Our study design is prospective hospital based study. The statistical analysis was performed using IBM statistical for social sciences (SPSS).Results: In our study, 85.43% were benign tumour and 12.67% were malignant tumour. Among this, 70.87% were cystic, 14.56% were solid and 14.56% were mixed tumours. Mostly they were epithelial tumours (85.43%). Main surgery was total hysterectomy with bilateral salpingoopherectomy. In malignant tumours 61.53% also had Chemotherapy and 0.97 % had debulking.Conclusions: There is strong correlation of ultrasonography finding with histopathology report. Though clinically it was 55 % only. Specificity of the Ultrasonography was 73.33% but sensitivity was 100%. Positive predictive value was 95.65% and negative predictive value was 100%.