Two cases of hypocalcaemia following removal of the stomach due to complications of surgery for tracheo-oesophageal anomalies are reported. In both instances grand mal seizures were the presenting features with radiological and biochemical evidence of rickets. Both children had elevated blood parathyroid hormone levels. The bone changes, hypocalcaemia and symptoms responded to parenteral vitamin D therapy. Sub total gastrectomy is a rare event in infancy and consequently no previous cases of vitamin D lack has been recorded as a complication of gastric surgery in this age group.