Scar Sarcoidosis Arising from Various Types of Traumatized Skin / 대한피부과학회지

ABSTRACT

Scar sarcoidosis is a rare variant of cutaneous sarcoidosis that develops from an inactive scar. Scars due to various traumas including surgery, vaccines, cosmetic tattoos, and herpes zoster have been reported to be associated with sarcoidosis. Subcutaneous nodules are the most common clinical feature in Korean cutaneous sarcoidosis followed by papules and erythema. Non-caseating granulomas with a sparse lymphocytic infiltrate that are referred to as "naked granulomas" are the characteristic histopathological feature of cutaneous sarcoidosis. Two female patients aged 45 and 61 years presented with subcutaneous nodules on both blepharoplasty scars. A 46-year-old female also presented with subcutaneous nodules on scars on the palm and perineum obtained subsequent to trauma and episiotomy, respectively. Chest radiography showed bilateral hilar lymphadenopathy in the third patient. A diagnosis of sarcoidosis was made in all 3 patients based on clinical and histopathological findings with the exclusion of other granulomatous diseases. Herein, we report 3 cases of scar sarcoidosis arising from various types of traumatized skin.