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Esophageal investigations in connective tissue disease: which tests are most appropriate?
Journal of Clinical Gastroenterology 2001 January
Our aim was to review the use of esophageal investigations in patients with suspected connective tissue disease (CTD). Forty-seven patients (39 women and 8 men) with suspected CTD were referred for esophageal manometry at the gastrointestinal physiology unit in the Royal Victoria Hospital, Belfast, U.K., over a 10-year period (1987-1997). The mean age was 51.7 years (range = 21-79 years). Chart review was conducted 1 to 10 years after manometry to confirm the final diagnoses: scleroderma was found in 11; CREST (calcinosis, Raynaud's phenomenon, esophageal dysmotility, sclerodactyly, telangiectasia), 8; mixed connective tissue disease, 14; Raynaud's alone, 5; and other CTDs, 9. All 47 successfully underwent esophageal manometry. In addition to manometry, 24 underwent gastroscopy; 27, barium meal; and 3, esophageal pH studies. Clinically significant esophageal abnormalities were noted in 8 (33%) on gastroscopy, in 15 (56%) on barium meal, and in 31 (66%) on manometry. Gastroscopy had a significantly lower positivity rate than the others (p < 0.05). Only three patients had pH testing, yet all three pH tests were abnormal. During manometry, abnormal findings were significantly more common in scleroderma-CREST when compared with other diagnoses (89% vs. 50%; p < 0.02). Thirty-three patients reported dysphagia. Abnormal manometry was more likely in these cases (82% vs. 33%; p < 0.02). A high percentage of patients with CTD have significant esophageal motility disorders. Investigations were more likely to be positive with scleroderma-CREST than other CTDs, even if dysphagia was present. Barium meal and manometry are more useful than OGD. pH studies were under-used. There is need for a standardized approach to esophageal investigations in patients with CTDs.
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