Ann Dermatol.  2018 Oct;30(5):637-639. 10.5021/ad.2018.30.5.637.

Pigmented Onychomatricoma Showing a Longitudinal Melanonychia: A Case Report and Brief Review of Literature

• Jung SC
• Lee TM
• Kim M
• Jo G
• Mun JH

• KMID: 2419766
• DOI: http://doi.org/10.5021/ad.2018.30.5.637

Abstract

No abstract available.

MeSH Terms

Nail Diseases
Nails, Malformed
Melanoma
Skin Neoplasms

Figure

• 

  Fig. 1 (A) Gray longitudinal melanonychia of the left toe. (B) Dermoscopic examination showing nail plate thickening, longitudinal parallel gray lines, longitudinal parallel white lines, and multiple cavities at the distal nail plate. (C) After partial nail avulsion, a villous tumor of the nail matrix penetrating the thickened nail plate. (D~F) Histopathologic examination showing spindle cells proliferation in the dermis and papillomatosis covered by nail matrix-like epithelium without stratum granulosum (H&E: D, ×40; E, ×100; F, ×400).

Reference

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2. Lee DY, Lee JH. Use of dermoscopy to identify nail plate cavities as a clinical diagnostic clue for onychomatricoma. Int J Dermatol. 2016; 55:e108–e110.

3. Wynes J, Wanat KA, Huen A, Mlodzienski AJ, Rubin AI. Pigmented onychomatricoma: a rare pigmented nail unit tumor presenting as longitudinal melanonychia that has potential for misdiagnosis as melanoma. J Foot Ankle Surg. 2015; 54:723–725.

4. Di Chiacchio N, Tavares GT, Tosti A, Di Chiacchio NG, Di Santis E, Alvarenga L, et al. Onychomatricoma: epidemiological and clinical findings in a large series of 30 cases. Br J Dermatol. 2015; 173:1305–1307.

5. Lesort C, Debarbieux S, Duru G, Dalle S, Poulhalon N, Thomas L. Dermoscopic features of onychomatricoma: a study of 34 cases. Dermatology. 2015; 231:177–183.