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  • Title: Prospective study of pancreatic b-cell and exocrine function following duct decompression in tropical calcific pancreatitis.
    Author: Agarwal G, Sikora SS, Choudhuri G, Bhatia E.
    Journal: World J Surg; 2002 Feb; 26(2):171-5. PubMed ID: 11865345.
    Abstract:
    Tropical calcific pancreatitis (TCP) is a chronic, nonalcoholic pancreatitis, which is limited to developing countries. In this condition, surgical decompression of the pancreatic duct consistently leads to relief of abdominal pain. However, no data are available on the effect of such intervention on pancreatic function. The aim of the present study was to prospectively evaluate b-cell and exocrine function following ductal drainage in patients with TCP. We studied 14 consecutive TCP patients who underwent ductal decompression for abdominal pain (longitudinal pancreaticojejunostomyin 12 patients, endoscopic sphincterotomy and ductal stenting in 2 subjects). Six patients who refused similar intervention served as controls. Patients were evaluated prospectively (median follow-up 13 months) for pain score, fasting and oral glucose stimulated plasma C-peptide, serum trypsin, and fecal chymotrypsin. After intervention, 1 patient died 2 months after surgery, and 2 others were lost in follow-up. The pain score improved significantly following duct decompression (median 8.0 vs. 0, p < 0.01), while in the control group there was no change in pain score (7.0 vs. 7.0). There was no change in b-cell function after intervention (fasting plasma C-peptide [mean +/- SEM] 0.41 +/- 0.08 vs. 0.42 +/- 0.05 nmol/l; peak plasma C-peptide 2.24 +/- 0.20 vs. 2.32 +/- 0.24 nmol/l). Fecal chymotrypsin was diminished in all patients prior to intervention (1.9 +/- 0.7 U/g), and did not normalize after ductal drainage in any subject. Serum trypsin levels were variable, being elevated in 29% and diminished in 47% of subjects. All 4 subjects with elevated baseline trypsin levels had a sharp fall after intervention (1020 vs. 175 ng/ml). However, serum trypsin did not normalize after ductal drainage in any patient with a diminished baseline value. In conclusion, patients with TCP have significant reduction in abdominal pain after decompression of the main pancreatic duct. However, there is no significant change in b-cell function. A fall in elevated serum trypsin suggests that there may be relief of subclinical inflammation after intervention; however, there is no improvement in exocrine function after a follow-up of 1 year.
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