Primary Cutaneous Amyloidosis of the auricular concha: Two case report

Abstract

Primary cutaneous amyloidosis of the auricular concha is considered as an entity of unknown etiology and a rare variant of primary localized cutaneous amyloidosis (PLCA) that predominates among women in the fourth and seventh life decade. There are a few clinical and dermoscopic reports in medical literature. However, a characteristic patron composed by globular structures has been identified. These structures, which vary in size, are localized on a brown or pink network referred to as cobblestone pattern.

The following article introduces two cases of female patients that presented with hyperpigmented papules on the auricular region. These were clinically diagnosed as cutaneous amyloidosis of the auricular concha and confirmed through histopathology study. No other body parts manifested PLCA.