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Thomas Knackstedt, MD, Nathaniel J. Jellinek, MD 

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1 Limitations and challenges of nail unit dermoscopy in longitudinal melanonychia 
Thomas Knackstedt, MD, Nathaniel J. Jellinek, MD  Journal of the American Academy of Dermatology  Volume 76, Issue 2, Pages e71-e72 (February 2017) DOI: /j.jaad Copyright © Terms and Conditions

2 Fig 1 Dermoscopy of nail apparatus melanoma in situ (NAMis) of the left great toe in a 9-year-old boy showing light-brown longitudinal pigmentation with central darker brown yet regular streak. Inset: Clinical appearance of biopsy-proven NAMis with 3.5-mm wide light-brown longitudinal melanonychia with subtle pigmentation of the lateral nailfold. Journal of the American Academy of Dermatology  , e71-e72DOI: ( /j.jaad ) Copyright © Terms and Conditions

3 Fig 2 Dermoscopy of nail apparatus melanoma in situ (NAMis) of the left fourth finger (ring finger) in a 25-year-old woman showing regular medium-brown lines with distal splinter hemorrhage. Inset: Clinical appearance of biopsy-proven NAMis with a 4-mm wide medium-brown longitudinal melanonychia without proximal nailfold pigmentation. Journal of the American Academy of Dermatology  , e71-e72DOI: ( /j.jaad ) Copyright © Terms and Conditions

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