FIGURE 2
From: Mesonephric Remnants of the Prostate: Incidence and Histologic Spectrum

Mesonephric remnants in transurethral resection. A, mesonephric remnants consist of a proliferation of closely spaced acini arranged in lobules or infiltrating between muscle bundles without stromal response. B, some acini show dilated tubules filled with a eosinophilic, colloid-like material. C, high-power field shows acini lined by a single layer of small- to medium-size cuboidal cells with scant amounts of eosinophilic or amphophilic cytoplasm. D, immunohistochemistry reveals strong positive staining for high-molecular weight keratin (34βE12).