Lentigo of the mucous membrane; for more than 1 year existing, about 2 cm in diameter, irregular but sharply defined, band-shaped, dark brown macula in the region of the inner preputial leaf of a 72-year-old man.
lentigo of the mucosa. incident light microscopy: brown to greyish-brown pigment streaks and pigment clusters as well as bluish-grey melanophagus agglomerates in the lower lip red. melanoma features are not present. noticeable is the blurred border with the spatter-like pigmentation. this pigmentation of a previously unpigmented mucosa, typical for the mucosa, results in the jagged clinical border.
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