Gross and microscopic findings of the cystic inguinal tumor. The tumor is completely excised with an adjacent part of vas deferens. A thick mucin content, taken out of the cystic tumor, is also noted (A). A multicystic mucinous tumor, filled with gelatinous mucoid materials, is microscopically present. The cystic wall, neighboring to vas deferens (asterisk), is irregularly thickened and fibrotic (B, x20). Masson trichrome stain clearly displays degenerated but still encircling muscular layers in the cystic wall of the tumor (C, x40; inlet showing high power view of x200). The cystic epithelial lining shows short papillary formation, and consists of a single layer of bland-looking columnar mucinous epithelial cells with frequent goblet cells (D, x 200).
Kim et al. Diagnostic Pathology 2012 7:139 doi:10.1186/1746-1596-7-139