Immunohistochemical profile of primary sclerosing lipogranuloma of the scrotum: report of five cases

Pathology International
K WatanabeT Suzuki

Abstract

Five cases of primary sclerosing scrotal lipogranuloma were examined histologically and immunohistochemically. Every case lacked a history of injection or trauma, and revealed common histological features: a typical granuloma composed of epithelioid cells and multinucleated giant cells, and inflammatory infiltrates of eosinophils, lymphocytes and macrophage/monocytes in the interstitium. Immunohistochemistry disclosed the epithelioid cells and multinucleated giant cells of the granuloma to be monocytes in nature, as both types of cells were positive for lysozyme, alpha-1-antitrypsin, alpha-1-antichymotrypsin, and KP-1. In the interstitium, KP-1 positive monocytes, L-26 positive B lymphocytes, UCHL-1 positive T lymphocytes and S-100 protein positive Langerhans-like cells were frequently found. S-100 protein positive cells could not be detected in the granuloma. Primary sclerosing lipogranuloma of the scrotum, therefore, is a peculiar inflammation characterized by granulomas consisting of monocytes and marked tissue eosinophilia of unknown etiology.

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Citations

Jun 19, 2007·Medical Molecular Morphology·Yuji OhtsukiMutsuo Furihata
Sep 18, 2003·Ophthalmology·Ari D AbelDale R Meyer
Jun 26, 2001·Histopathology·M NistalR Paniagua
Feb 18, 2003·Pathology International·Tadashi TeradaYoshiyuki Osamura

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