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June 1990

Solitary Plaque on the Foot

Author Affiliations

University of Michigan Medical Center, Ann Arbor

Arch Dermatol. 1990;126(6):815-816. doi:10.1001/archderm.1990.01670300115021

REPORT OF A CASE  A 47-year-old man presented to the outpatient dermatology clinic with a 2-year history of a slowly enlarging lesion on the dorsum of his right foot. The patient stated that this plaque lesion occasionally drained small amounts of pustular material. The lesion was generally nontender and did not interfere with his activities of daily living. He denied any specific trauma to the foot or any known foreign body in the foot. He was otherwise in excellent health and was receiving no long-term medications. A previous outside biopsy done several months previously had shown only acute and chronic inflammation with some vascular proliferation. Initially, this cutaneous lesion was felt to represent a deep fungal infection, and therapeutic trials with ketoconazole and potassium iodide were tried but were unsuccessful.On initial examination, the patient had a 3.5 × 2.5-cm crusted indurated violaceous plaque lesion on the right dorsal aspect

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