1. Melanoma and squamous cell carcinoma on different nails of the same hand 
Michael Harwood, MD, Gladys H. Telang, MD, Leslie Robinson-Bostom, MD, Nathaniel Jellinek, MD 
Journal of the American Academy of Dermatology 
Volume 58, Issue 2, Pages (February 2008)
DOI: /j.jaad
Copyright © 2008 American Academy of Dermatology, Inc. Terms and Conditions

2. Fig 1
Left thumbnail: 5.5-mm wide band of streaky longitudinal pink erythronychia with distal onycholysis and brown subungual discoloration.
Journal of the American Academy of Dermatology  , DOI: ( /j.jaad )
Copyright © 2008 American Academy of Dermatology, Inc. Terms and Conditions

3. Fig 2
Left fourth fingernail: 2-mm wide, evenly pigmented light brown band, narrowing to 1 mm in width distally with overlying longitudinal ridge in nail plate. There is subtle, light brown pigmentation of cuticle and proximal nailfold.
Journal of the American Academy of Dermatology  , DOI: ( /j.jaad )
Copyright © 2008 American Academy of Dermatology, Inc. Terms and Conditions

4. Fig 3
Left fourth fingernail histopathology: full-thickness nail matrix atypia with large keratinocytes located throughout epithelium. (Hematoxylin-eosin stain; original magnification: ×40.)
Journal of the American Academy of Dermatology  , DOI: ( /j.jaad )
Copyright © 2008 American Academy of Dermatology, Inc. Terms and Conditions

5. Fig 4
Left thumbnail histopathology: nail matrix epithelium with single-cell and focally contiguous melanocyte proliferation along basal and suprabasal cell layer, in addition to mid and upper level pagetoid melanocytes. (Hematoxylin-eosin stain; original magnification: ×40.)
Journal of the American Academy of Dermatology  , DOI: ( /j.jaad )
Copyright © 2008 American Academy of Dermatology, Inc. Terms and Conditions

6. Fig 5
Left thumbnail histopathology: Melan-A stain highlights large, atypical nail matrix melanocytes, with mid and upper level pagetoid growth. (Original magnification: ×40.)
Journal of the American Academy of Dermatology  , DOI: ( /j.jaad )
Copyright © 2008 American Academy of Dermatology, Inc. Terms and Conditions