We report the case of a 65-year-old male patient with Down's syndrome and a deep venous thrombosis on anticoagulation with acenocoumarol. The case presented due to nonspecific, predominantly postprandial epigastric discomfort, meteorism and aerophagia. A thoracoabdominal computed tomography (CT) scan revealed a Morgagni hernia with a cephalad migration of part of the stomach, ascending colon and transverse colon (Fig. 1 ). After laparotomy, the defect was repaired using a titanium mesh and the patient had a favorable outcome.