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Panniculitis with crystals induced by etanercept subcutaneous injection
Mar Llamas-Velasco1, Luis Requena2
1Department of Dermatology, Hospital Universitario La Princesa, Universidad Autónoma, Madrid, Spain.
Abstract:
Panniculitis with lipid crystallization within adipocytes may be seen in several disorders, including crystal-storing histiocytosis, gouty panniculitis, subcutaneous fat necrosis of the newborn, post-steroid panniculitis, sclerema neonatorum, oxalosis and subcutaneous fungal infections by mucormycosis, zygomycosis or aspergillosis. Panniculitis at the sites of subcutaneous injection of drugs are frequent, but to our knowledge no crystals have been described in the drug-induced panniculitis at the sites of subcutaneous injections. We report on a patient who developed a panniculitis with lipid crystallization at the site of etanercept injection.
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