PDF(Pubmed)
Abstract：
Nevus is a group of melanocytes that grow together to form a benign growth on the skin. It is often a black lesion that may protrude from the skin. Becker\'s nevus is a hyperpigmented lesion that presents congenitally or is acquired. The pigmentation and unusually high hair growth might grow darker with time. Becker\'s nevus, which can interchangeably be called Becker\'s melanosis, is a rare disease usually presented by men. The following case is of a 21-year-old male who presented with a hyperpigmented lesion on his right arm. The lesion started at age 16 and increased in size gradually; it involved the flexor surface of the right elbow joint and showed hypertrichosis with irregular margins. On examination, the top dermis contained melanophages, and the basal layer was hyperpigmented. Based on clinical appearance and examination, Becker\'s nevus was diagnosed.
摘要：
痣是一组黑素细胞，它们一起生长，在皮肤上形成良性生长。通常是黑色病变，可能从皮肤突出。Becker痣是一种先天性或获得性色素沉着过度病变。随着时间的推移，色素沉着和异常高的头发生长可能会变得更暗。贝克尔的痣,可以互换称为贝克尔黑变病，是一种罕见的疾病，通常由男性出现。以下病例是一名21岁的男性，他的右臂上有色素沉着过度的病变。病变始于16岁，大小逐渐增加；它累及右肘关节的屈肌表面，并显示多毛症，边缘不规则。在检查中，顶部的真皮含有黑色素细胞，基底层色素沉着过多。根据临床表现和检查，贝克尔的痣被诊断出来了.
