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Nevus of Ota is caused by the entrapment of melanocytes in the upper third of the dermis. It is found only on the face, most commonly unilaterally, rarely bilaterally and involves the first two branches of the trigeminal nerve. The sclera is involved in two-thirds of cases (causing an increased risk of glaucoma).
Similar to Nevus of Ota but occurring on shoulder and chest; blue in color Nevus of Ito also known as nevus fuscoceruleus acromiodeltoideus is a skin condition with similar features to the Nevus of Ota , but occurring in a different distribution.
Nevus of Ito (nevus fuscoceruleus acromiodeltoideus) Nevus of Ota (congenital melanosis bulbi, melanosis bulborum and aberrant dermal melanocytosis, nevus fuscoceruleus ophthalmomaxillaris, oculodermal melanocytosis, oculomucodermal melanocytosis) Nevus spilus (speckled lentiginous nevus, zosteriform lentiginous nevus)
In 1937, he returned to Tokyo Imperial University. His interest in leprosy increased and he performed experimental works intended for the inoculation of leprosy which failed. In 1938 he first presented the case which was later named Nevus of Ota in 1939. [3] The Nevus of Ota is a birthmark, mostly seen in Mongoloid people.
Nevocellular nevus; Nevocytic nevus; Nevoid melanosis; Nevus bleu; Nevus ceruleus; Nevus fuscoceruleus acromiodeltoideus; Nevus fuscoceruleus ophthalmomaxillaris; Nevus of Ito; Nevus of Ota; Nevus pigmentosus et pilosus; Nevus spilus; Nevus with architectural disorder; Noonan syndrome with multiple lentigines
Phakomatosis pigmentovascularis is a rare neurocutanous condition where there is coexistence of a capillary malformation (port-wine stain) with various melanocytic lesions, including dermal melanocytosis (Mongolian spots), nevus spilus, and nevus of Ota.
Nevus (pl.: nevi) is a nonspecific medical term for a visible, circumscribed, chronic lesion of the skin or mucosa. [1] The term originates from nævus , which is Latin for " birthmark "; however, a nevus can be either congenital (present at birth) or acquired.
However, a melanocytic nevus is benign, and melanoma is malignant. Most melanocytic nevi never evolve into a cancer, with the lifetime risk for an individual nevus being 1 in 3000 for men and 1 in 11 000 for women. [5] Moreover, dermatologists have a standardized system for determining whether a skin lesion is suspicious for malignant melanoma.