Rapid development of multiple squamous-cell carcinomas during chronic granulocytic leukemia.

We report a 65-year-old patient who presented a rapid eruption of keratoses on sun-exposed areas and an explosive transformation into several squamous-cell carcinomas, occurring during the accelerated phase of a chronic granulocytic leukemia. Clinical findings resembled those usually described in xeroderma pigmentosum. The role of immunosuppression, chemotherapy and possible genetic predisposition is discussed.