Arch Pathol Lab Med. 1992 Mar;116(3):277-80.

Benign fibrous tumor of the tunica vaginalis testis. Report of a case with light, electron microscopic, and immunocytochemical study, and review of the literature.

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Department of Pathology, MetroHealth Medical Center, Case Western Reserve University School of Medicine, Cleveland, Ohio 44109.

Abstract

Benign fibrous tumor of the tunica vaginalis testis is an uncommon lesion of unknown pathogenesis and histogenesis, frequently described as fibrous pseudotumor. We describe a case of a fibrous tumor of the tunica vaginalis testis studied with light, immunocytochemical, and electron microscopy in a 64-year-old man who also developed a metachronous renal cell carcinoma. To our knowledge, this is the first such case to be presented. We describe the cell of origin of this rare entity and its similarity to fibrous tumors of pleura and extrapleural sites, with a review of the English-language literature and emphasize that not all intrascrotal tumors are malignant.

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