Abstract Scar sarcoidosis is a form of cutaneous sarcoidosis characterized by granulomatous inflammation arising within pre-existing scars or sites of previous trauma. These lesions may develop years after the initial injury and can mimic foreign body granulomatous reactions both clinically and histopathologically. We report a 23-year-old woman who developed erythematous indurated plaques within extensive burn scars 20 years after sustaining a full-thickness scald injury requiring reconstructive surgery with metallic staples. Histopathology revealed granulomatous dermatitis with polarizable foreign material. The presence of retained staples and subsequent development of uveitis complicated the diagnostic evaluation. This case highlights the diagnostic challenge of differentiating scar sarcoidosis from foreign body granulomatous reactions and emphasizes the potential role of retained foreign material as a trigger for sarcoidal granuloma formation.
Almaani et al. (Wed,) studied this question.