Benign Mesothelial Proliferations of the Tunica Vaginalis Testis

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.

Automated summary

The correct diagnosis of mesothelial proliferations is a classic challenge for pathologists, and it holds significant clinical implications. These proliferations are frequently associated with recurrent hydrocele, and their morphological characteristics can resemble malignancy, leading to potential misdiagnosis.