Inflammation of seborrheic keratoses caused by cytarabine: a pseudo sign of Leser-Trelat.

Cytarabine, used for the treatment of acute myelogenous leukemia, can cause a rare reaction of inflammation of existing seborrheic keratoses. We report a case of cytarabine induced inflammation of seborrheic keratoses mimicking a vesicular eruption in 53-year-old man with acute myelogenous leukemia.