Thick, yellowish, onycholytic nail with whitish maceration proximally. Granulation tissue is seen protruding from under the proximal nail fold.
From: Baumgartner M, Haneke E. Retronychia: Diagnosis and treatment. Dermatol Surg 2010; 36:1610. DOI:
10.1111/j.1524-4725.2010.01693.x. Copyright © 2010 American Society for Dermatologic Surgery. Reproduced with permission from Wolters Kluwer Health. Unauthorized reproduction of this material is prohibited.