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Previous published data have shown the benefit of nutritional support delivered via a gastrostomy button (GB) for children on chronic dialysis. The use of the GB is suspended following renal transplantation (RT) in most children and it is usually removed 2-3 months later together with the chronic dialysis catheter when the child is on alternate-day steroids. We reviewed the outcome of gastrostomies following successful RT in children. The gastrostomies were created by an open technique (Stamm) with the child under general anaesthesia, usually at the time of insertion of a chronic dialysis catheter. Growth data and complications of the GB were collected in a prospective registry. Following RT, the GB was removed with the expectation that the tract would close spontaneously. Those in whom a gastrocutaneous fistula persisted underwent formal surgical closure. A total of 18 children have had gastrostomy buttons removed: 11 gastrostomies (61%) closed spontaneously, but 7 (39%) required operative closure at a median of 2 months (range 3 weeks-4 years) post-removal. The need for formal closure was significantly related to the duration that the gastrostomy had been in situ pre-transplant (non-parametric statistics, 0.05 > p > 0.01). Although nearly two-thirds of gastrostomies in this study closed spontaneously following RT, less than one-half of those that had been in situ for more than 1 year did so. We thus recommend formal closure of all gastrostomies that have been in situ for more than 1 year. This can be done at the same operation as the removal of the chronic dialysis catheter.