Primary mucinous cystadenoma of the spermatic cord within the inguinal canal

We report a hitherto not documented case of primary mucinous cystadenoma arising in thespermatic cord within the right inguinal canal of a78-year-old man. The tumor was painless,hard and mobile. A computed tomography scan on the pelvis revealed an oval shaped, lowattenuation mass, measuring 5.0x2.5x2.1 cm, that was present adjacent to the vas deferens.Grossly, the excised mass was multicystic mucinous tumor, filled with thick mucoidmaterials. Microscopically, the cystic wall was irregularly thickened. The cystic epitheliumcommonly showed short papillae lined by a single layer of columnar to cuboidal mucinousepithelial cells without significant stratification or cytologic atypia. Goblet cells were alsofrequently present. Immunohistochemically, the neoplastic cells showed positive reaction tocarcinoembryonic antigen, cytokeratin 20, CDX2, epithelial membrane antigen, and CD15.However, they were negative for PAX8 and Wilms' tumor 1 protein. Pathological diagnosiswas a papillary mucinous cystadenoma of the spermatic cord. Although mucinouscystadenoma in this area is extremely rare, it is important that these lesions be recognizedclinically and pathologically in order to avoid unnecessary radical surgery.Virtual slidesThe virtual slide(s) for this article can be found here:http://www.diagnosticpathology.diagnomx.eu/vs/1720965948762004

Source: http://www.diagnosticpathology.org/content/7/1/139

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