Chronic radiodermatitis developing after iridium-192 exposure: a case report.

Iridium-192 (Ir(192)) is a radioactive isotope which has high-penetration ability in humans. Due to occupational accidents, industrial radiography workers may be rarely exposed to high doses of ionizing radiation, and acute radiodermatitis may develop after the exposure. After an asymptomatic period which can last several months, poikiloderma, sclerosis, necrosis, and ulceration of the skin may be observed as typical clinical features of chronic radiodermatitis. Herein, we report the case of a 26-year-old man presented with ulceration and sclerosis on the second digit of the left hand and was diagnosed with chronic radiodermatitis induced by Ir(192).