A Case of Schweninger-Buzzi Type Anetoderma

Abstract

A 33-year-old man presented to our hospital with a 4-month history of small, whitish scar-like lesions on his arms. All lesions were several millimeters in diameter, and the surface was atrophic and wrinkled. Preceding infections or skin lesions were not observed. Skin biopsy revealed a focal loss of elastic tissue in the superficial to mid-dermis, which was surrounded by irregular or twisted collagen fibers. No inflammatory cell infiltration was observed. Based on these clinical and histopathological findings, we diagnosed this patient with primary Schweninger-Buzzi type anetoderma. Primary anetoderma can be a precursor of autoimmune disorders and prothrombotic conditions such as anti-phospholipid syndrome. It is important to perform long-term monitoring to identify the development of further autoimmune symptoms associated with anetoderma. Skin Research, 20 : 192-196, 2021