1. Onychopapilloma presenting as longitudinal leukonychia
Vincent Criscione, Gladys Telang, MD, Nathaniel J. Jellinek, MD 
Journal of the American Academy of Dermatology 
Volume 63, Issue 3, Pages (September 2010)
DOI: /j.jaad
Copyright © 2009 American Academy of Dermatology, Inc. Terms and Conditions

2. Fig 1
Fingernail with a 1-mm wide band of longitudinal leukonychia and distal V-shaped splitting, onycholysis, and a keratotic papule at the free edge of the nail. Dermatoscopy highlights these findings (inset).
Journal of the American Academy of Dermatology  , DOI: ( /j.jaad )
Copyright © 2009 American Academy of Dermatology, Inc. Terms and Conditions

3. Fig 2
A, Acanthosis of the nail bed epithelium with elongated rete ridges. B, Thickened fibrovascular stroma with incidental subungual inclusion cyst. C, Nail bed with large eosinophilic keratinocytes indicative of matrix metaplasia. D, Hyperkeratosis at the hyponychium. (A-D, Hematoxylin–eosin stain; original magnifications: A, ×4; B, ×4; C, ×40; D, ×4.).
Journal of the American Academy of Dermatology  , DOI: ( /j.jaad )
Copyright © 2009 American Academy of Dermatology, Inc. Terms and Conditions