Benign Mesothelial Proliferations of the Tunica Vaginalis Testis

Abstract

The correct diagnosis of mesothelial proliferations is a classic problem for pathologists, and one which has important clinical implications. A significant number of such cases appear associated with recurrent hydrocele, as an irritative/reactive response to this condition. The morphological spectrum of mesothelial lesions in this topography is broad, and a set of benign conditions may appear, sometimes with florid gross features and cytologic pseudo-atypia. Here, we present two different examples in which malignancy was initially considered in the differential diagnosis.

Keywords

• well-differentiated papillary mesothelioma
• florid mesothelial hyperplasia
• pseudotumor
• differential diagnosis