PMC5833878_01
Computed tomography scan with contrast [(a) sagittal and (b) axial] displaying a complex midline cystic pelvic mass with thick walls found between the bladder and the rectum. Sagittal MRI of the pelvic mass with (c) T1-weighted imaging and (d) intensity on T2-weighted imaging.
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A CT scan of the abdomen and pelvis revealed a large midline pelvic complex cystic lesion that appeared to arise from the right vas deferens (Figures 1(a) and 1(b)). Radiology recommended an MRI for clearer visualization and location of the mass based on results of the CT scan (Figures 1(c) and 1(d)). T2-weighted imaging (Figure 1(c)).
Immunohistochemical analysis staining with H&E at 100x, 200x, and 400x displaying epithelial cells and underlying stromal cells.
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The H&E stain (Figure 2) displayed a layer of endometrial epithelium with underlying stroma.
Immunohistochemical analysis stained (100x) (a) strongly positive for estrogen in epithelial and stromal cells, (b) strongly positive for progesterone receptor in epithelial and stromal cells, (c) strongly positive for CK7 in epithelial cells, (d) focally positive for CD15, and (e) positive for CD10 in the cytoplasm of stromal cells.
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CK7 (Figure 3(c)) and estrogen receptors (Figure 3(a)). CD10 stains were positive (Figure 3(e)) and CD15 staining was focally positive (Figure 3(d)) in the underlying stromal-like tissue.