A Peculiar Corporal Pigmentation—a Presumed Variant of Acropigmentatio Reticularis (Kitamura)

Abstract

We present a 52-year-old woman with peculiar pigmentation distributed mainly on the trunk, which morphologically and histopathologically resembled the lesion of acropigmentatio reticularis (Kitamura). Ultrastructural as well as histopathological findings suggested that the lesion of the present case may be regarded as a kind of inflammatory process induced by an immune mechanism against some components of keratinoeytes or melanosomes.