Copyright 1999 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.1999
A 32-year-old white woman presented with a 2-year history of nail loss. She initially had noted a "small bump" on the corner of her right thumbnail. In time, the bump grew larger and split the nail, and, finally, a portion of the right thumbnail fell off. Occasionally, the patient experienced pain in the affected area of her thumb. Her medical history was noncontributory.
Cutaneous examination revealed a 7-mm erythematous nodule located on the lateral aspect of the right thumb, with the loss of one third of the lateral nail plate (Figure 1). An x-ray film of the thumb showed no evidence of bone abnormality. A biopsy specimen was obtained (Figure 2).
Horton S, Mizuguchi R, Moiin A, Hashimoto K. Erythematous Nodule on the Nail Bed. Arch Dermatol. 1999;135(9):1113-a-1118. doi:10-1001/pubs.Arch Dermatol.-ISSN-0003-987x-135-9-dof0999