A 30 year history of panniculitis

The differential diagnosis of panniculitis may be challenging due to the un iform clinical presentation of different panniculitis subsets. We describe a 45-year-old woman with a 30 year history of panniculitis, who had repeate dly failed to fulfill diagnostic criteria for various panniculitis subsets. Finally, erythema induratum was diagnosed and she was successfully treated with antituberculous chemotherapy, The wide spectrum of histological alter ations of chronic erythema induratum as well as the sensitivity of polymera se chain reaction for Mycobacterium tuberculosis in erythema induratum lesi ons is discussed.