Parker Jordan, Liszewski Walter, Merten Ashley H, Gaddis Kevin, Pragman Alexa, Goldfarb Noah
Department of Dermatology, University of Minnesota, Minneapolis, MN Department of Dermatology, Minneapolis VA Health Care System, Minneapolis, MN Department of Medicine, University of Minnesota, Minneapolis, MN Department of Medicine, Minneapolis VA Health Care System, Minneapolis, MN.
Dermatol Online J. 2020 Jun 15;26(6):13030/qt5173t7tx.
Superficial granulomatous pyoderma (SGP) is a rare pyoderma gangrenosum (PG) variant that differs from classic PG in that the ulcers tend to be more superficial, lack a rapidly advancing border, and are not typically associated with an underlying systemic disease. The ulcers are most commonly painless and located on the trunk, with a clean granulating base. They generally do not show undermining but may have a vegetative border. Lesions usually respond well to either topical or intralesional corticosteroids with complete healing. The classic histopathologic finding is a "three-layer granuloma" in the superficial dermis consisting of central neutrophilic inflammation and necrosis, a surrounding layer of histiocytes and multinucleated giant cells, and an outer most layer of plasma cells and eosinophils. Herein, we present a unique case of SGP with sporotrichoid-like distribution on the lower extremity.
