atypical melanocytic hyperplasia

a·typ·i·cal me·la·no·cyt·ic hy·per·pla·si·a

proliferation of melanocytes showing nuclear atypicality, especially as scattered single cells high in the epidermis; interpreted by some pathologists as malignant melanoma in situ.
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
(10) reported a 63years-old woman with an extensive pigmentation of the vagina and the histological study showed an atypical melanocytic hyperplasia. The authors (10) presented the case as a possible precursor of a malignant melanoma.
Melanosis de la vagina e infeccion por virus del papiloma humano, una patologia poco comun: reporte de un caso
I wonder if we [at Scripps] diagnose melanoma in situ more often, as opposed to others who might sign it out as atypical melanocytic hyperplasia or another worrisome diagnosis."
About 5% of melanoma patients have subsequent melanoma
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