Bilateral naevus of Ota: a rare manifestation in a Caucasian

Abstract

The naevus of Ota (naevus fusculocoeruleus ophthalmomaxillaris) was first described by the Japanese dermatologist M. T. Ota in 1939. It has a reported incidence of 0.2% to 1% in the Japanese population. It usually occurs in the skin innervated by the first or second branch of the trigeminal nerve. The naevus comprises dermal melanocytes and is congenital or acquired during adolescence. Commonly associated lesions include scleral melanocytosis and other ocular manifestations as well as lesions of the tympanic membrane, oral and intranasal mucosa and leptomeninges. Diseases associated with Ota's naevus in rare cases are open-angle glaucomas and melanoma. The naevus of Ota in Europeans is a rare manifestation. We report the very rare case of a bilateral naevus of Ota associated with enoral melanocytosis in a white European person.

Nevus of Ota in Dark Skin—An Uncommon but Treatable Entity

“…In between 1999 and 2009, four patients with Fitzpatrck skin type V presented to our private practice laser clinic for treatment options to improve the appearance of their Nevus of Ota. One patient presented with a bilateral nevus and ocular involvement 26, 30, 31, all other patients showed unilateral affection. Patients or their parents were counselled before the first treatment regarding risks and side effects of this laser treatment including discomfort during treatment, post‐treatment erythema, oedema, pinpoint bleeding, and crusting.…”

“…Q‐switched laser treatment for Nevus of Ota is now common practice in dermatological clinics all over the world for patients with a caucasian and Asian skin type alike. The Asian population shows the highest incidence of Nevus of Ota and treatment parameters, efficacy and side effects have therefore been well established for the treatment of this skin type 25, 26. Lighter skin types do also not present a therapeutic challenge compared to the treatment of the Asian skin type 27.…”

Don’t it make my blue eyes brown: heterochromia and other abnormalities of the iris

“…73 Oculodermal melanocytosis is usually a unilateral, although sporadic cases of bilateral involvement have been reported in the literature. [82][83][84][85][86][87][88] The vast majority of cases of ocular or oculodermal melanocytosis are sporadic in nature and only rarely have familial cases been reported in the literature. [89][90][91][92] Clinically, oculodermal melanocytosis is characterised by a bluish-grey pigmentation 88 involving areas of skin innervated by the first and the second divisions of the trigeminal nerve.…”

Bilateral Naevus of Ota Successfully Treated With a Q-Switched Nd:yag 1064 Laser With a Review of the Literature

“…Furthermore, albeit in Japanese patients the naevus of Ota occurs bilaterally in up to 10% of cases (3), in Caucasians bilateral involvement is extremely rare. Since the first report of Kolde et al, there have been only five additional case reports of bilateral naevus Ota in the Caucasian population (10)(11)(12)(13)(14).…”