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September 1992

Umbilical Mass

Author Affiliations

Departments of Dermatology and Pathology, University of North Carolina, Chapel Hill

Arch Dermatol. 1992;128(9):1270. doi:10.1001/archderm.1992.01680190129021

REPORT OF A CASE  A 27-year-old Oriental woman presented to the student health dermatology clinic with a lifelong history of asymptomatic nonchanging umbilical lesions. Examination of her umbilicus revealed two darkly pigmented adherent keratotic tubular concretions (Fig 1). Partial removal of one lesion was performed and sent for histopathologic examination (Fig 2).What is your diagnosis?Clinicians, local and regional societies, and residents and fellows in dermatology are invited to submit quiz cases to this section. Cases should follow the established pattern and be submitted double-spaced and in triplicate. Photomicrographs and illustrations must be clear and submitted as positive color transparencies. If photomicrographs are not available, the actual slide from the specimen will be acceptable. Material should be accompanied by the required copyright transfer statement, as noted in "Instructions for Authors." Material for this section should be submitted to Antoinette F. Hood, MD, Department of Dermatology, The Johns Hopkins Medical

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