Introduction: The preoperative distinction between benign and malignant ovarian cysts could assist in defining two categaries of patients. Those with a high probability of a malignant neoplasm would obviously undergo appropriate preparation and prompt surgical exploration for definitive diagnostic, therapeutic and staging purposes. Materials and Methods: For the material of our study we had selected 45 patients from gynecology ward during January 2014 –December 2014. The inclusion criteria were presence of cystic lesions in the ovary on ultrasound examination. Fine Needle Aspiration was carried out under ultrasound guidance in the radiology department. The cytological examination was later correlated with the histology of the same cyst removed during laparotomy. Results: Forty five patients ranging in age between 20 and 58 years were included in this study. All had unilocular or multilocular cyst, Septate or non-septate, thin or thick walled ovarian cyst, on ultrasound examination. Nondiagnostic/acellular aspirate was obtained in 06/45 cases, maximum being in cases of follicular cysts (4/6). Highest cases of benign cysts (60%) were noted during this study which includes follicular cysts, leuteal cysts, mucus cysts and endometrioid cyst. In malignant cysts (15.56%) serous cystadenocarcinoma, mucinous cystadenocarcinoma and malignant teratoma were included. Conclusion: Aspiration cytology definitely prove to be one of the most valuable tools in the diagnosis of cystic lesions of the ovary.

Keywords: FNAC; Fine Needle Aspiration Cytology; Cystic Lesions; Ovary; Diagnosis.