hamartoma/melasma

Congenital pigmented arrector pili hamartomas are unique malformations of epidermis and pilar apparatus usually appearing as localized, lightly pigmented, hairy plaques. Characteristic microscopic features include smooth-muscle proliferation similar to irregularly disposed arrectores pilorum, and

Intracranial invasion of cellular blue nevus is extremely rare, and its malignant transformation is even less common. The differential diagnosis includes neurocutaneous melanosis and neurocristic cutaneous hamartoma. A 50-year-old female presented with intracranial melanoma in contiguity with a

Herein we have reported the histologic findings in two cases of Becker's melanosis. In one patient the lesion showed hyperplasia or hair muscles and in the other patient the lesion was associated with an underlying neurofibroma. The proliferative changes seen in the epidermis and dermis in Becker's

Becker's melanosis is a distinct clinical entity. It usually presents in adolescence as a unilateral, hyperpigmented, hairy cutaneous hamartoma. We report herein 12 cases of Becker's melanosis that differ in their presentation from classical Becker's melanosis, and we believe that such presentations

Becker's melanosis (BM) is an uncommon cutaneous hamartoma. The classical descriptionof the lesion is of a macular, pigmented patch found on the upper trunk, with onset at or around adolescence. The aim of this study is to describe the clinicopathologic features of cases of BM which do not fit this

Becker melanosis, also known as Becker nevus, is a relatively common cutaneous hamartoma. The condition is classically characterized by a unilateral, hyperpigmented patch with varying degrees of hypertrichosis on a peripubertal individual. As Becker nevi are generally singular in a given individual,

Becker's melanosis is a relatively common, benign hamartoma, which is usually characterized by a hyperpigmented, hypertrichotic patch on the upper trunk or proximal upper extremities of males, with its onset during the peripubertal years. Commonly, there is an associated smooth muscle hamartoma on