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Familial right thoracic stomach.

Hiatal hernia reportedly occurs in about one in 1,000 infants.1 Failure of fusion of the dorsal mesentery and the developing stomach probably accounts for the widened esophageal hiatus. A continuum then exists that ranges from a small loculus of gastric mucosa in the chest (partial thoracic stomach) to a complete herniation of the stomach into the thoracic cavity. This abnormality has rarely been reported in infancy and, almost always, the hernia has been reported in the left thoracic cavity.2-4 A familial occurrence in infants in successive generations has never been previously reported.
 CASE REPORTS
 K.C., a 2-month-old white boy, was admitted to the Marshfield Medical Center because of a progressive increase in postprandial vomiting.