Cytology of Clear Cell Carcinoma of the Female Genital Tract in Fine Needle Aspirates and Ascites

Abstract

To define the cytomorphologic features of clear cell carcinoma (CCC) of the female genital tract. The study consisted of four CCCs of the female genital tract in which clinical and histologic confirmation had been done. Cytologic findings were evaluated with May-Grünwald-Giemsa (MGG) stain of three cases of fine needle aspiration (FNA) material and peritoneal fluid cytology. All the FNA materials were obtained from metastatic supraclavicular lymph nodes. We report here the cytomorphologic features of three FNA biopsies and peritoneal fluid cytology from four patients. Primary tumors from patients with aspiration material from supraclavicular lymph nodes were located in the ovary in two patients and vagina in one. The peritoneal fluid cytology was obtained from a patient with uterine cervical tumor. Cytologic findings were similar in all preparations. The cells had abundant, pale, finely vacuolated cytoplasm with indistinct cytoplasmic membranes. The nuclei were round to oval, with fine chromatin. The characteristic feature of CCC of the genital tract was basement membrane-like substance. This hyaline extracellular material stained pinkish to purple-red in MGG preparations and was frequently observed within the cancer cell clusters. In ascitic fluid, psammoma bodies were also observed. The cytomorphologic characteristics of CCC of the genital tract are distinctive, and the entity may easily be diagnosed even at metastatic locations.