Abstract
A 56-year-old woman visited our hospital with erythematous subcutaneous nodules and plaques on her lower extremities. The histopathologic examination of the erythematous nodule demonstrated lobular panniculitis with granulomatous inflammation and necrotizing vasculitis. A diagnosis of Erythema Induratum of Bazin was made. The tuberculin skin test was strongly positive, but the chest radiograph revealed no abnormalities. QuantiFERON®-TB 2nd Generation (QFT) has recently been developed as a new technique for detecting tuberculosis infection regardless of BCG vaccination. It offers high sensitivity and high specificity. And it can make a diagnosis of latent tuberculosis infection. QFT is useful for the diagnosis of Erythema Induratum of Bazin with tuberculosis infection.
