PMC3784108_01
Transvaginal ultrasound indicating a large 10x8x7 cm3 sized cystic mass at the center of the pelvic cavity, with internal septation and no apparent solid portion.
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F1
Transvaginal ultrasound examination revealed no uterus and a large 10x8x7 cm3 sized well defined cystic mass located at the center of the pelvic cavity, with internal septation and no apparent solid portion (Fig. 1).
An abdominopelvic computed tomographic scan after enhancement shows a 10x8 cm sized cystic mass in the left ovary, with internal septation (arrow) and a solid portion (arrowhead), which is enhanced by contrast media.
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F2
There was no lymph node enlargement or ascites, but the liver showed signs of cirrhosis (Fig. 2).
(A) Histological specimen shows large aggregates of tumor cells with abundant eosinophilic to clear cytoplasm, with a granular appearance and vacuolization (H&E, x200). (B) Immunohistochemical staining shows the tumor cells exhibiting a diffuse positive reaction for inhibin (brown) (x200). (C) Immunohistochemical staining shows a diffuse positive reaction of the tumor cells for calretinin (dark red) (x100).
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F3
Microscopic findings exhibited diffuse tumor cells with abundant eosinophilic granular cytoplasm and vacuolization, with no signs of nuclear atypicality and a mitotic count of 5 per 10 HPF (Fig. 3A). Immunohistochemistry revealed a positive reaction to inhibin, calretinin, and vimentin, a moderately positive reaction to CD99, and a negative reaction to pan-CK, S-100, placenta-like alkaline phosphatase, and chromogranin (Fig. 3B, C).