A Case of Granulomatous Pigmented Purpuric Dermatosis

Abstract

Granulomatous pigmented purpuric dermatosis was first described by Saito and Matsuoka in 1996. Clinically, the lesions manifest purpuric and petechial brown pigmented macules as a result of hemosiderin deposits. Histopathologically, it is characterized by lymphocytic perivascular infiltrate limited to the papillary dermis with extravasated red blood cells and hemosiderin deposition, accompanied by granulomatous infiltration. We report our experience of a case which presented a clinical picture of pigmented purpuric dermatosis and histologically granulomatous inflammation.