NEVUS OF ITO
By Gary M. White, MD
The nevus of Ito (NI) is a congenital dermal pigmentation occurring on the back. More than 50% are present at birth, and most of the remaining appear around puberty.
- The occurrence of primary cutaneous melanoma arising is extremely rare [J Cutan Pathol. 2016 Jan;43(1):57-63].
- Classically, it is said to affect the area of distribution of the posterior supraclavicular and cutaneous brachii lateralis nerves.
- This corresponds to the supraclavicular, scapular and deltoid regions.
A unilateral, asymptomatic, blue, gray or brown patch on one side of the back is characteristic.
The Q-switched ruby laser or other pigment removing laser may be used.
Bilateral nevus of Ito and nevus spilus in the same patient JAAD August 2008 Volume 59, Issue 2, Supplement, Pages S51–S5
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