Multinucleate Cell Angiohistiocytoma: Clinicopathological Correlation of 142 Cases With Insights Into Etiology and Pathogenesis

摘要

Introduction: Multinucleate cell angiohistiocytoma (MCAH) is a peculiar dermatopathological entity described as asymptomatic grouped red-to-violaceous papules, developing over weeks to months without spontaneous regression. The histopathological findings comprise bizarre basophilic multinucleated cells (MC), small vessel inflammation, mild dermal fibrosis, and a sparse lymphohistiocytic infiltrate.