PMC4709960_01
a Perioperative photograph showing a 10 x 5 cm perineal mass arising from the episiotomy scar. b Cut surface of the tumor, pink-yellow in color
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PMC4709960_01_13048_2016_211_Fig1_HTML.jpg
Fig1
We underwent a local excision of the mass for a biopsy (Fig. 1a and b).
Microscopic images: c clear cell adenocarcinoma: marked cellular pleomorphism, clear cytoplasm, nuclei show pleomorphism. d Characteristic hobnail cells are noted in our case. e Endometriosis: cystic dilated endometrial glands in dense stroma. f Transitional zone revealing clear cell carcinoma arising from the endometriotic focus
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PMC4709960_01_13048_2016_211_Fig2_HTML.jpg
Fig2
Microscopically, pathological result was clear cell adenocarcinoma (Fig. 2c and d). Endometriotic focus was seen at the side of the cacinous area (Fig. 2e). We clearly noticed transitional dysplastic zone between the endometriotic focus and the clear cell carcinoma (Fig. 2f).