[Biliary drainage in the diagnosis of microlithiasis. Value in acute idiopathic pancreatitis and in persistent pain in the right hypochondrium].

We present a microscopic study of bills obtained via biliary drainage from 33 patients with the diagnosis of acute idiopathic pancreatitis, 33 subjects with pain in the epigastrium and U.Q. with the suspicion of biliary origin, but not revealed by means of routine techniques, and 14 patients with confirmed biliary lithiasis. Duodenal intubation under radiological control was used in all cases, with the administration of 2 UI/kg of CCK IV, in order to study bile A and B under polarized light microscopy. We found cholesterol crystals in 12 cases (36.3%) of acute idiopathic pancreatitis, 5 cases (15.1%) of right hypocondrial pain, and 14 (100%) of biliary lithiasis. Calcium bilirubinate granules were obtained in 15 cases (45.4%) of acute idiopathic pancreatitis, 8 cases (24.4%) of pain in the right hypocondrium and 7 (50%) of biliary lithiasis. We detected giardia in one case of acute idiopathic pancreatitis and an other with pain in the right U.Q. In conclusion, biliary drainage reveals its diagnostic importance in the study of biliary pathology in patients diagnosed of acute idiopathic pancreatitis as well as in cases of chronic right U.Q. al pain suggestive of biliary pathology.