High-dose chemotherapy or chemoradiotherapy followed by hematopoietic cell transplantation (HCT) is being used for an ever increasing number of children with malignant or nonmalignant disorders, and improved results are leading to an ever increasing number of long-term survivors. Understanding the delayed effects that may occur after HCT is important in determining the evaluations to perform for this unique group of patients. The articles that follow detail what has been observed to date regarding the oral cavity and dental late effects, the kidney after HCT, and the evaluations to perform to determine late effects when patients return to the centers after their HCT.