Warty papules on the nose.

Interferon gamma release assay for tuberculosis was positive, but his chest x-ray was negative, consistent with his history of treated tuberculosis. Dear Editor, Sarcoidosis is a chronic, inflammatory disease of unclear etiology, classically characterized by an infiltration of noncaseating granulomas.1 It may affect any tissue or organ, but the most commonly affected are the lungs, the lymphatic system, and the skin. For localized disease, intralesional or topical corticosteroid therapy is the preferred first-line treatment.3 Particularly for thicker or nodular lesions, intralesional therapy may penetrate the skin better and yield better results. [Extracted from the article]