Tadashi Shibue

Annular pancreas detected in adults, diagnosed by endoscopic retrograde cholangiopancreatography: report of four cases.

SummaryFour cases of annular pancreas diagnosed by endoscopic retrograde cholangiopancreatography (ERCP) are described and 105 cases of this anomaly in adults in Japan were reviewed. Among 105 cases, abdominal pain was the most frequent symptom. Concerning associated diseases, peptic ulcer was present in 24.8% and pancreatitis in 13.3%. In case 1, duodenal ulcer and pancreatic cyst were noted. Pancreatolithiasis was found in two cases (case 1 and 2). Case 4 presented the clinical features of acute pancreatitis.Out of 105 cases, well-described 26 were divided into six types. The following results were obtained. 1) The most frequent type was that in which the annular duct arose from the duct of Wirsung. 2) The next most frequent type was that in which the main pancreatic duct encircled the duodenum. 3) The other types corresponded to those in which the annular duct arose from the duct of Santorini and the common bile duct.We emphasized that ERCP is the most important procedure to find the characteristic features and to establish the therapeutic strategy in cases of annular pancreas.

Diagnosis of Chronic Pancreatitis by Endoscopic Ultrasonography

Abstract: This study evaluates the usefulness of endoscopic ultrasonography in the diagnosis of chronic pancreatitis. 52 patients with chronic pancreatitis, which included 15 cases of mild pancreatitis, 19 cases of moderate pancreatitis and 18 cases of advanced pancreatitis, were diagnosed by endoscopic retrograde cholangiopancreatography and further investigated by endoscopic ultrasonography. The 4 main findings of 1) dilatation of the main pancreatic duct, 2) irregularity of the main pancreatic duct, 3) inhomogeneity of the pancreatic parenchyma and, 4) irregular configuration of the pancreas were reviewed. In all of the 18 cases of advanced pancreatitis, irregularity of the main pancreatic duct, inhomogeneity of the pancreatic parenchyma and irregular configuration of the pancreas were seen. 89% of these patients had dilatation of the main pancreatic duct. In the patients with moderate pancreatitis, on the other hand, all 4 findings occurred with a frequency of between 58% to 95%. In the patients with mild pancreatitis, irregularity of the main pancreatic duct, inhomogeneity of the pancreatic parenchyma and irregular configuration of the pancreas occurred at a rate of 40% to 93%, and dilatation of the main pancreatic duct occurred rarely in only 13% of the patients. We were able to detect abnormalties in the pancreatic parenchyma by endoscopic ultrasonography even in the early stages of chronic pancreatitis, and this suggests that this technique may be useful in the diagnosis of mild pancreatitis, which usually causes quite minor abnormal changes in the main pancreatic duct.

Clinical Evaluation of Endoscopic Gastric Mucosal Resection

Abstract: Endoscopic gastric mucosal resection (EGMR), by which a large specimen can be obtained, has been developed for the diagnosis and treatment of the borderline lesion (B. L.) or early gastric cancer (EGC), since biopsy specimens obtained by conventional techniques are too small to make an accurate diagnosis in number of cases. Thirty‐eight lesions in 35 cases (26 lesions in 23 cases with B. L. and 12 lesions in 12 cases with EGC) were resected for the purpose of treatment by EGMR, and 24 lesions (6 submucosal tumors, 3 B. L. s, 14 cases of EGC and 1 malignant lymphoma) for the purpose of diagnosis. By means of histological examination of the bite biopsy specimens following EGMR, twenty‐three lesions in 26 cases (89%) with a B. L. and 8 in 12 cases (67%) with EGC for treatment by EGMR were found to have been completely resected.

Relationship between perivaterian diverticulum and biliary tract disease

SummaryThe findings in 107 cases of perivaterian diverticulum diagnosed by endoscopic retrograde cholangiopancreatography (ERCP) were discussed in relation to complicated biliary tract disease.1)The incidence of abnormality in both gallbladder and bile duct, especially in extrahepatic bile ducts, was more frequent in cases of perivaterian diverticuli more than 11 mm in diameter.2)Perivaterian diverticuli was most frequently located on the oral side of papilla. Cases with papilla in a diverticulum showed more frequent biliary tract abnormality.3)Abnormal findings of the distal portion of common bile duct, such as flexion, compression and tapering, were noted in 31% of 107 cases. These findings were seen more frequently in cases with papilla in a diverticulum or with a diverticulum more than 11 mm in diameter. It is considered that these data suggest a mechanism of occurrence of biliary tract disease in cases with perivaterian diverticulum.

Clinical Evaluation of Endoscopic Ultrasonogrphy in Diagnosis of Submucosal Tumor of the Upper Alimentray Tract

Abstract: The usefulness and the problems of endoscopic ultrasonograpy (EUS) in the diagnosis of submucosal tumors (SMT) of the upper alimentary tract were evaluated in this study. EUS was carried out in 86 cases with SMT of the stomach. Tumors of 13 cases was confirmed histologically (leiomyoma in 7 cases, leiomyosarcoma in one, lipoma in 2, gastric cyst in one, aberrant pancreas in one and Schwannoma in one case). In only one out of 22 cases with SMT of the esophagus, the tumor was surgically resected and a pathological examination revealed leiomyoma

Abstracts of selected papers presented at the 30th Annual meeting of the Japanese Society of Gastroenterology

S OF SELECTED PAPERS PRESENTED AT THE 30TH ANNUAL MEETING OF THE JAPANESE SOCIETY OF GASTROENTEROLOGY October 20-22, 1988 -Kagoshima, Japan Chairman: Shuji HASHIMOTO, M.D.