A 54-year-old woman presented with unilateral painful nodules on her wrist and forearm for four months. The nodules were well-circumscribed, subcutaneous, erythematous to violaceous, and extended from her dorsal wrist to the forearm in a sporotrichoid pattern (Image A). The patient had a history of systemic lupus erythematosus and had been on mycophenolate mofetil, prednisone, and cyclosporine. A dorsal wrist nodule biopsy was done. Hematoxylin-eosin (400x) (Image B) and Fite's acid-fast staining (400x) (Image C) images have been provided.
Acid-fast staining confirmed the presence of rapid-growing bacilli in the dermis, the characteristics being consistent with mycobacterial infection. Can you identify the infection? *This patient case is from the Docplexus Editorial Team for educative purposes only. Source: Case Reports in Dermatological Medicine
