Large congenital melanocytic nevus

MONDO:0044792

A large, or giant, congenital melanocytic nevus (LCMN or GCMN) is a pigmented skin lesion of more than 20 cm - or 40 cm- respectively, projected adult diameter, composed of melanocytes, and presenting with an elevated risk of malignant transformation.

Also known as: Giant Congenital Melanocytic Nevus, bathing trunk nevus, congenital melanocytic nevi, congenital melanocytic nevus, congenital melanocytic nevus of skin, congenital melanocytic nevus of the skin, congenital nevus of skin, congenital nevus of the skin

1447 clinical trials for this condition and its sub-types, 7 tagged with Large congenital melanocytic nevus itself.

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Where it sits in the disease tree

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↑ Hereditary skin disorder (885) ↑ Melanocytic nevus (77)

Including sub-types (1447) Tagged with Large congenital melanocytic nevus (7)

Trials to join now! 4 Not yet recruiting 1 Not yet finished but already full! 1 Completed 1

New skin camera could spot moles without cutting

Diagnosis Completed

This study tested a new type of microscope called SECM to see if it can take clear pictures of pigmented skin lesions like moles. Sixteen healthy adults with moles on their forearms had their skin imaged with both a standard dermatoscope and the SECM device. The goal was simply t…

Sponsor: Massachusetts General Hospital • Aim: Diagnosis

Last updated Jun 27, 2026 07:56 UTC

Large congenital melanocytic nevus

Where it sits in the disease tree

New skin camera could spot moles without cutting