Nonmelanoma skin cancer in childhood after hematopoietic stem cell transplant: a report of 4 cases.

Although it is known that hematopoietic stem cell transplantation (HSCT) survivors are at risk of nonmelanoma skin cancer (NMSC), there is limited literature on the incidence of NMSC during childhood in this population. We present 4 HSCT patients ages 13 to 20 years diagnosed with NMSC in our clinic over a 1-year period. Each patient had multiple risk factors associated with NMSC including chronic graft-versus-host disease, prolonged immunosuppression, total-body irradiation, and voriconazole therapy. We conclude that the incidence of NMSC in children after HSCT may be underestimated and should be further investigated. Appropriate skin cancer screening, including annual skin examinations, are advised for pediatric patients with identifiable risk factors.