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Skin-melanocytic tumor
Nevi
Nevus of Ota

Reviewer: Christopher Hale, M.D. (see Reviewers page)
Revised: 21 November 2014, last major update January 2013
Copyright: (c) 2002-2014, PathologyOutlines.com, Inc.

General
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Terminology
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Epidemiology
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Sites
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Clinical features
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Case reports
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Treatment
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Clinical images
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Flat blue-gray pigmentation with an irregular border on the skin of lateral ocular areas;
bilaterally, the sclerae also involved

Acquired dark brown
spots below eyes

Episcleral involvement

With nevus of Ito

Bilateral acquired nevus of
Ota-like macules
Micro description
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Micro images
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Bipolar dendritic melanocytes in papillary and reticular dermis are arranged as single units between collagen bundles, also numerous pigment-laden macrophages
Contributed by Dr. Asmaa Gaber Abdou, Menofiya University, Egypt:

Elongated dendritic melanocytes scattered with collagen bundles extending around hair follicles

Wavy dendritic cells with evenly dispersed melanin granules distributed in the superficial reticular dermis

Differential diagnosis
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End of Skin-melanocytic tumor > Nevi > Nevus of Ota


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