Leukemic infiltrates in the skin in areas of healed zoster are rare. Only four cases in which the diagnosis has been proved histologically were found in the literature. Halle1 reported his observations on two patients with lymphatic leukemia who had been presented before the Silesian Dermatological Society by Jadassohn.2 One of these patients, a 68 year old man, presented gangrenous herpes zoster in the region of the first and second branches of the trigeminal nerve, with a generalized varicelliform exanthem. The zoster healed with scar formation in about six weeks. Several weeks later an eruption of slightly elevated round infiltrates together with pea-sized papules appeared, not only in the zoster scars but in the areas which had been affected by the varicelliform exanthem. At this time biopsy specimens from both sites showed leukemic infiltrates in the skin. The second patient, a 71 year old farmer, had zoster over