Old-scar mass and changing surgical perspective: Sarcoidosis.

Sarcoidosis is a systemic inflammatory disease of an unknown etiology. Skin is involved in 25% of all cases, and 29% of them present as a scar sarcoidosis. Asymptomatic old-scar masses are generally regarded as a foreign body reaction by surgeons and often result in excisional biopsy. We describe a case of a patient who developed sarcoidosis in a 34-year-old appendectomy scar and adjacent inguinal lymph nodes without any local or systemic symptom and radiologic finding. Surgeons should not underestimate the importance of such lesions as a simple condition. Scar sarcoidosis may resolve spontaneously, or the treatment with some topical agents is effective. Furthermore, scar sarcoidosis may be the initial manifestation of systemic sarcoidosis.