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Letter to Editor Volume 4 Issue 1
Ota’s nevus: about a case
Sara Oukarfi,
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Selma Benkirane, Hanane Baybay, Sara Elloudi, Fatima Zahra Mernissi
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Departement of dermatology and venerology, Hospital university Hassan II, Morocco
Correspondence: Sara Oukarfi, Departement of dermatology and venerology, Hospital university Hassan II, Morocco, Tel +212655311938
Received: January 08, 2020 | Published: February 24, 2020
Citation: Oukarfi S, Benkirane S, Baybay H, et al. Ota’s nevus: about a case. J Dermat Cosmetol. 2020;4(1):11-12. DOI: 10.15406/jdc.2020.04.00141
Letter to Editor
We report the case of a 4 month old patient, with no specific history, with congenital oculo palpebral melanocytosis. The dermatological examination had objectified a homogeneous slate gray macular cupboard occupying the cutaneous territory of the 1st and 2nd branches of the trigeminal nerve on the left side (Figure 1), in dermoscopy we objectified a blue aspect to slate gray in clod with yellowish zones without structure, without peri follicular hypopigmentation (Figure 2). The ocular examination was normal.
Keywords: otanevus, clinic, dermoscopy
Abbreviations
MB, Mitochondrial diseases; mtDNA, mitochondrial DNA; MRI, magnetic resonance imaging; GTCS, generalized tonic-clonic seizure; HSV, herpes simplex virus; ENMG, electroneuromyography
The Ota nevus or nevus fusco-caeruleus ophthalmo-maxillaris, originally described by Ota in 1939, corresponds to a hyper melanocytosis of the periorbital region observed more frequently in subjects of Asian origin and blacks. Dendritic melanocytes are located in the reticular and papillary dermis with a normal overlying epidermis.1 Women are almost five times more likely to be affected than men. It is present from birth, but it can appear later in puberty. Clinically, there is a bluish gray hyperpigmentation, even brownish or slate unilateral of the face in the cutaneous territory of the 1st and 2nd branches of the trigeminal nerve. Bilateral damage to the skin, eyes and oral mucosa can rarely be observed.1,2
Figure 1 Clinical appearance of an Ota nevus in a 4 month old infant.
Figure 2 Blue to slate gray appearance, yellow area without structure (circled).
Dermoscopy of Ota's nevus is rarely described, Elmas et al.,3 described a dermoscopic appearance comprising gray areas without structure and scattered gray-brown dots. Other aspects have been described as brown and gray unstructured areas with uneven distribution, gray-brown spots, white clods in an arrangement of "four-sided clods", perifollicular hypopigmentation, yellowish areas without structure.3
In the study by Zinoune et al.,4 the dermoscopic characteristics of a case of Ota nevus were described as a homogeneous bluish to slate gray pigmentation.
Ota's nevus is frequently accompanied by eye pigmentation affecting the sclera, conjunctiva, iris, choroid and papilla. Chronic glaucoma and Transformation into melanoma are the main risks of this pathology which justifies regular monitoring.2 Skin lesions can be treated without scarring after-effects by laser.
Conflicts of interest
The authors declare that they have no conflicts of interests.
Acknowledgments
None.
Funding
None.
References
- Baykal C, Yılmaz Z, Sun GP, et al. The spectrum of benign dermal dendritic melanocytic proliferations. J EurAcad Dermatol Venereol. 2019;33(6):1029–1041.
- Hakima Elouarradi et al. Mélanocytoseoculopalpébraleounaevusd’Ota. The Pan African Medical Journal. 2013:1937–8688.
- Elmas ÖF, Kilitçi A. Dermoscopic Findings of Nevus of Ota. Balkan Med J. 2019.11.46.
- Zinoune S, Douhi Z, Baybay H, et al. Bilateral Nevus of Ota: An Unusual Presentation. Madridge J Case Rep Stud. 2019;3(2):143–145.
©2020 Oukarfi, et al. This is an open access article distributed under the terms of the, which permits unrestricted use, distribution, and build upon your work non-commercially.