Exclusion criteria: Women with follicular cysts, haemorrhagic inclusion cysts, endometriosis, those who were non-cooperative and didn't submit the consent were not considered.

Data collection, procedure: Specimen received as a solitary specimen, or part of total abdominal hysterectomy specimen were considered. On the receipt of the clinical specimen, the gross examination was done. The features such as size, the color of the specimen were noted. As a part of the study, the external surface features and contents were reported and recorded in the proforma.

After 24 to 48 hrs of fixation, multiple bits were taken from the representative areas, which may be prone to be OT. Tissue was processed, and paraffin blocks were made.  The tissue sections of 5 microns were cut and stained using Hematoxylin and Eosin. Sections were cleared by xylene and mounted on a glass slide. Each biopsy was labelled explicitly according to the orientation of the biopsy site and sent for histopathological examination. The stained sections were examined under light microscope for histopathological diagnosis.

Special stains such as periodic acid Schiff and reticulin stains were done whenever necessary. CA 125 levels were measured for clinically and radiologically suspected to have OTs.In the case of Granulose cell tumour, IHC -Inhibin was done.

Ethical consideration and permission: The institutional ethics committee approved the study protocol. Informed written consent was taken from all the study participants. If required, consent was also taken in the presence of the witness.

Statistical analysis: SPSS21.0 was used for the analysis of the data. Various non-parametric tests were used. The data were presented in percentages.

benign group, the majority were cystic (61), followed by mixed (16) and solid (2). All the borderline (5) were cystic, and out of 8 MlTs, four mixed, three were cystic, and one was solid (Table 4).

Table 4: Consistency of OTs among the study participants; n (%).

Cystic cases are the maximum (71; 75.5%) of the OTs

Among the different histological patterns, surface epithelial tumors (SETs) constituted the majority (89.2%; 83), followed by Germ cell tumors (8; 8.5%) and sex cord-stromal tumors (3; 3.2%) (Table 5). Among the individual tumors, serous cystadenoma (57.45%) were the commonest benign epithelial tumor, followed by mucinous cystadenoma (15.96%) (Table 5).

Table 5: Histopathological spectrum of OTs according to the WHO classification.

and necrosis. This was also observed in the studies done by Modepalli et al. [15].

Most of the OTs (71; 75.5%) were grossly cystic cases, followed by mixed (20; 21.27%) and solid tumors (3: 3.2%). In the benign group, the majority were cystic (61), followed by mixed (16) and solid (2). All the borderline (5) were cystic, and out of 8 MlTs, four mixed, three were cystic, and one was solid (Table 4).Saha et al. reported that 70% were SET, 26% were germ cell, and 4% were sex cord-stromal tumors. [5]. Sudha et al. reported that 64% were SET, 26% were germ cell and 8% were sex cord-stromal turoms. [4].

The SETs in the present study comprised 70.25% of all tumors.Among the individual tumors, the epithelial tumors the commonest was serous cystadenoma (68.05%) followed by mucinous cystadenoma(20.21%), one clear cell carcinoma, one endometrioid carcinoma(Table5).This was in contrast to Deepti et al., where mucinous cystadenoma was reported to be the commonest.[10].Among primary malignant tumors, Serous cystadenocarcinoma was the commonest in this study, accounting for 6.3%.Whereas Deepti et al. reported this to be 6%. [10]. Germ cell tumors(8.4%)were the second major group of tumors in the present study; these were seen between 20 – 40yrs. In the present study, the incidence of germ cell tumors was relatively less than in other studies.Madhumita et al. reported 17.46 % of germ cell tumors. [16].Whereas it was said to be 21% by Ranjana et al. [17].In this,1.7% were immature teratoma and dysgerminoma each.These findings may contribute significantly to the understanding of the distribution of different ovarian neoplasms among the local population, which may lead to the development of some strategic planning to investigate and treat the underlying causes of concerning neoplasms and may suggest preventive strategies.

Sex cord-stromal tumors constituted 3.19 % in this report. This was similar to the study reported byBuelaprescillaet al., Madhumita et al.,4.6% and 7.93 %, respectively. [16,17].Similar to this research, Ranjana hawaldaret al. [18].Also didn't report Sertoli leydig cell tumor. Ancillary techniques like immunohistochemistry are rarely used in the diagnosis of OTs. These can differentiate the primary ovarian mucinous tumors from malignant metastatic colorectal carcinomas.[15].