Primary Source #189:

Mangla A, Agarwal N, Yu J, Telfer M. Spooning of the nails and webbing of the esophagus: koilonychia and Plummer-Vinson Syndrome. Clin Case Rep. 2015;3(12):1054-1055. Published 2015 Nov 3. doi:10.1002/ccr3.419

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Feel free to use any of the images showcased on this website. Please cite both this website (UNC School of Medicine Dermatology Image Library - http://med.unc.edu/dil) and the primary source of the image as references.
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