Labial melanotic macule: A potential pitfall on reflectance confocal microscopy

摘要

Labial melanotic macules (LMM) are benign pigmented lesions that can be difficult to differentiate from melanoma on the mucous membrane and the mucocutaneous junction . LMM are secondary to a variable increase in melanin in the basal layer leading to hyperpigmentation of the basal keratinocytes along with an increase in the number of melanophages, and a normal or slightly increased number of melanocytes .