Cystic Fluid and Fine Needle Aspiration Cytopathology of Cystic Adult Granulosa Cell Tumor of the Ovary

BACKGROUND: Fine needle aspiration (FNA) is a valuable tool in the diagnosis of ovarian cysts, especially in the young and when a nonneoplastic cyst is suspected. A case is presented with its cystic fluid, FNA and imprint cytopathology findings diagnosed as cystic adult granulosa cell tumor of the ovary (AGCT). CASE: Cystic fluid and FNA material of a 24-year-old female patient with a left-sided cystic ovarian mass 11.5 cm in diameter was sent intraoperatively for cytopathologic examination. In aspiration cytopathology of AGCT, the presence of regular tumor cells with or without nuclear grooves arranged in a follicular pattern mimicking a Call-Exner body has been regarded as the characteristic cellular feature of the tumor. CONCLUSION: For correct interpretation of the cytopathologic findings, close communication with the clinician performing the aspiration is of vital importance.