Abstract
Multiple duplication is a very rare disease. This is report of a 6-month-old boy with the duplications in the mediastinum and the ileum. He was admitted to Kyushu University Hospital with an abnormal finding in the chest X-ray. Thoracotomy was performed under the diagnosis of the mediastinal tumour, which was actually a gastric cyst. Further investigation by means of ^<99m>Tc scintigram showed a presence of another duplication in the ileum, which was resected at the age of 3 years. Only 14 cases of multiple duplication have been reported in Japan. Duplication of the separate resions as seen in this case has ever been seen in only to cases. In this cace, ^<99m>Tc scintigram examination was very useful to diagnose the duplication in the ileum.
