tensin-converting enzymes (ACE) and a negative response to purified protein derivative of tuberculin (PPD). CASE REPORT

Sir, Sarcoidosis is a chronic multi-system disease of unknown origin involving the eyes, skin, lungs, heart, bones and nerves. Skin lesions are relatively common, and are classified as either specific or non-specific (1). Specific lesions are those that show the typical sarcoid granulomas, including lupus pernio, infiltrated plaques, maculopapular eruptions, subcutaneous nodules and infiltration of old scars (1). The most typical non-specific skin lesion is erythema nodosum. The patient described here had skin lesions that first suggested a diagnosis of erythema induratum of Bazin, but we ultimately diagnosed sarcoidosis based on other findings, including uveitis, bilateral hilar lymphadenopathy, an increased level of serum angiotensin-converting enzymes (ACE) and a negative response to purified protein derivative of tuberculin (PPD).