A Rare Case of Adult Onset Partial Unilateral Lentiginosis

Segmental lentiginous is a rare pigmentation disorder with typical lentigo histopathology characterized by unilateral and dermatomal localization of multiple, brown macules on skin. We present a 55-year old female patient with adult onset nonsendromic form of partial unilateral lentiginosus on her right side of trunk. This bening lesion, which includes pigmenter mosaicism in its pathogenesis, can be found as part of syndromes or can be seen sporadically as it is here.