Sometimes duplications of the digestive tract are diagnosed not before adulthood. Single cases of malignant tumours in combination with duplications have been described previously. The poor incidence of this entity is documented by less than 20 reports in the last 107 years. There are so far no reports concerning the development of carcinomas within tubulous duplications of the oesophagus. The case of an adult patient having oesophageal duplication with an adenocarcinoma is reported.
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