Relationship among esophageal dysfunction, diabetic gastroenteropathy, and peripheral neuropathy

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Abstract
Esophageal motor function was tested in 12 patients with a clinical diagnosis of diabetic gastroenteropathy by radionuclide transit (RT) studies. Other insulin-dependent diabetics with and without symptoms of peripheral neuropathy but with no symptoms of gastrointestinal disease were similarly studied. Eleven of the 12 patients with gastroenteropathy were found to have abnormal esophageal function, even though only five had esophageal symptoms. Half the diabetics with peripheral neuropathy symptoms, and a quarter of those with no symptoms had abnormal esophageal transit studies. No abnormalities were found in a group of asymptomatic volunteers studied in a similar manner. We conclude that esophageal dysfunction, often subclinical, is present in nearly all patients with suspected diabetic gastroenteropathy. Esophageal dysfunction correlates less well with peripheral neuropathy. This study implies that if a diabetic, presenting with diarrhea or nausea and vomiting, has normal esophageal transit, then a cause for these symptoms, other than diabetic gastroenteropathy, may exist.