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What is Lesions of Neavus of OTA commonly involves the following cranial nerve and explain in detail?
Nevus of Ota (Nevus Fuscocaeruleus Ophthalmomaxillaris) Melanocytes that have not migrated completely from the neural crest to the epidermis during the embryonic stage . Asian population most commonly affected, usually congenital * Malignant melanoma has been repoed to develop in a nevus of Ota Clinical findings:- Blue to gray speckled macules or patches. Unilateral (90%). Can be bilateral. (Hori nevus: acquired bilateral blue/gray macules, no mucosal involvement). Forehead, temple, malar area, or periorbital skin (Branches of V1 and V2); mucosal involvement is possible and may involve the sclera, conjunctiva (oculodermal melanocytosis) and tympanic membrane; increased risk of glaucoma (10%). Histology ;- Dendritic melanocytes are present and surrounded by fibrous sheaths; dermal melanophages, 5 types based on the locations of the dermal melanocytes, which are (1) superficial, (2) superficial dominant, (3) diffuse, (4) deep dominant, and (5) deep. Treatment:- Q-switched: alexandrite, Nd:YAG, and ruby lasers. Ref:- Dermatology pictorial review by Asra Ali; pg num;-165