J Korean Med Sci.  2004 Aug;19(4):616-618. 10.3346/jkms.2004.19.4.616.

Acquired, Bilateral Nevus of Ota-like Macules (ABNOM) Associated with Ota's Nevus: Case Report

• Park JH
• Lee MH

• KMID: 2157697
• DOI: http://doi.org/10.3346/jkms.2004.19.4.616

Abstract

Ota's nevus is mongolian spot-like macular blue-black or gray-brown patchy pigmentation that most commonly ocurrs in areas innervated by the first and second division of the trigeminal nerve. Acquired, bilateral nevus of Ota-like macules (ABNOM) is located bilaterally on the face, appears later in life, is blue-brown or slate-gray in color. It is not accompanied by macules on the ocular and mucosal membranes. There is also debate as to whether ABNOM is part of the Ota's nevus spectrum. We report an interesting case of ABNOM associated with Ota's nevus. A 36-yr-old Korean women visited our clinic with dark bluish patch on the right cheek and right conjunctiva since birth. She also had mottled brownish macules on both forehead and both lower eyelids that have developed 3 yr ago. Skin biopsy specimens taken from the right cheek and left forehead all showed scattered, bipolar or irregular melanocytes in the dermis. We diagnosed lesion on the right cheek area as Ota's nevus and those on both forehead and both lower eyelids as ABNOM by clinical and histologic findings. This case may support the view that ABNOM is a separate entity from bilateral Ota's nevus.

Keyword

Nevus of Ota; Acquired, Bilateral Nevus of Ota-like Macules (ABNOM)

MeSH Terms

Adult
Biopsy
Face/pathology
Female
Humans
Melanocytes/cytology
Nevus of Ota/diagnosis/*pathology
Nevus, Pigmented/diagnosis/*pathology

Figure

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  Fig. 1 Dark bluish patch on the right malar area, temple and cheek (Ota's nevus).

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  Fig. 2 Mottled brownish macules on both forehead and both lower eyelids (ABNOM lesion).

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  Fig. 3 Skin biopsy from the right malar area (hematoxylin-eosin stain; ×200): Melanocytes, are scattered in the dermis.

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  Fig. 4 Skin biopsy from the left forehead (hematoxylin-eosin stain; ×200): Melanocytes, are scattered in the dermis.

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