Value of extrahepatic bile duct and main pancreatic duct segment patterns on MRCP to differentiate the periampullary carcinoma / 中华肝胆外科杂志

Objective:To investigate the value of the extrahepatic bile duct and main pancreatic duct segment patterns on magnetic resonance cholangiopancreatography (MRCP) for differentiating the periampullary carcinoma (PAC).Methods:The clinicopathologic data of 125 patients with PAC who were admitted to Wuxi No.2 People’s Hospital from June 2013 to December 2021 were retrospectively analyzed, including 72 males and 53 females, aged (64.9±8.6) years. According to its anatomy, the extrahepatic bile duct (B) was divided into suprapancreatic and intrapancreatic (including ampullary) segments, and the main pancreatic duct (P) was divided into tail-body and head segments. MRCP patterns: i. the extrahepatic bile duct or main pancreatic duct visible without dilatation, ii. cutoff of the distal extrahepatic bile duct or main pancreatic duct with upstream dilatation, iii. cutoff of the intrapancreatic or head segment with upstream dilatation and remnant intrapancreatic or head segments invisible, iv. cutoff of the intrapancreatic or head segment with upstream dilatation and nondilated remnant intrapancreatic or head segments, were represented as 0, 1, 2, and 3, respectively. Segment patterns of B1/P0+ B1/P1, B0/P2+ B0/P3+ B2/P2+ B2/P3+ B3/P3, B3/P0, and B0/P0+ B2/P0 on MRCP were compared in PAC patients.Results:Of the 125 patients, there were 57 (45.6%) with pancreatic head carcinoma, 36 (28.8%) with ampullary carcinoma, 20 (16.0%) with distal cholangiocarcinoma, and 12 (9.6%) with periampullary duodenal carcinoma. Segment patterns of B0/P2+ B0/P3+ B2/P2+ B2/P3+ B3/P3 were found in 52 patients with pancreatic head carcinoma (91.2%, 52/57), with a significant difference between PAC (χ 2=110.66, P<0.001). Segment patterns of B1/P0+ B1/P1were found in 36 patients with ampullary carcinoma (100.0%, 36/36), fallowed by 11 (91.7%, 11/12) with periampullary duodenal carcinoma, with a significant difference between PAC (χ 2=129.95, P<0.001). Segment pattern of B3/P0 presented in 16 patients with distal cholangiocarcinoma (80.0%, 16/20), with a significant difference between PAC (χ 2=62.45, P<0.001). The segment patterns of B0/P0+ B2/P0 were only seen in 3 of 57(5.3%) patients with pancreatic head carcinoma. Conclusion:On MRCP, cutoff of the head segment with upstream dilatation and remnant head segment invisible or nondilated indicates the pancreatic head carcinoma. Cutoff of the intrapancreatic segment with upstream dilatation, remnant intrapancreatic segment visible, and main pancreatic duct nondilated, indicates the distal cholangiocarcinoma. And cutoff of the distal extrahepatic segment with upstream dilatation and main pancreatic duct dilatation or not, indicates the ampullary or periampullary duodenal carcinoma.

Protection Provided by a Gabexate Mesylate Thermo-Sensitive In Situ Gel for Rats with Grade III Pancreatic Trauma

BACKGROUND/AIMS: This study investigated the protection provided by gabexate mesylate thermo-sensitive in-situ gel (GMTI) against grade III pancreatic trauma in rats. METHODS: A grade III pancreatic trauma model with main pancreatic duct dividing was established, and the pancreas anatomical diagram, ascites, and serum biochemical indices, including amylase, lipase, C-reactive protein (CRP), interleukin 6 (IL-6), and tumor necrosis factor-α (TNF-α), were examined. The pancreas was sliced and stained with hematoxylin eosin and subjected to terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) staining. RESULTS: Ascites, serum amylase, lipase, CRP, IL-6, and TNF-α levels were significantly increased in the pancreas trauma (PT) groups with prolonged trauma time and were significantly decreased after GMTI treatment. The morphological structure of the pancreas was loose, the acinus was significantly damaged, the nuclei were irregular and hyperchromatic, and there was inflammatory cell invasion in the PT group compared to the control. After GMTI treatment, the morphological structure of the pancreas was restored, and the damaged acinus and inflammatory cell invasion were decreased compared to the PT group. Moreover, the cell apoptosis index was significantly increased in the PT group and restored to the same levels as the control group after GMTI treatment. CONCLUSIONS: GMTI, a novel formulation and drug delivery method, exhibited specific effective protection against PT with acute pancreatitis therapy and has potential value as a minimally invasive adjuvant therapy for PT with acute pancreatitis.

Cadaveric Study of The Anatomical Variations of The Accessory Pancreatic Duct.

Background: The accessory pancreatic duct enters the duodenum at the minor duodenal papilla, developmentally draining the dorsal pancreatic bud; however, it is smaller and less constant than the main pancreatic duct and undergoes varying degrees of atrophy at the duodenal end. Objective: The objective of this study was to see the variations in course, opening and communication pattern of the accessory pancreatic duct in different age-groups in a Bangladeshi population. Methods: This crosssectional, descriptive study was done was done in the Department of Anatomy, Dhaka Medical College, Dhaka, from August 2005 to December 2006, based on collection and dissection of 75 postmortem male human pancreas. The collected samples were divided into seven age groups: 10-19 years, 20-29 years,30-39 years, 40-49 years, 50-59 years),60-69 years and(eˆ70 years. However, 65 samples were taken for final observation. Results: The accessory pancreatic duct was found in 27.69% specimens. Straight course was found in 50% specimen, while spindle course in 27.78% and cudgel course in 22.22% specimens were observed. In only 4 (6.15%) specimens, the accessory pancreatic duct communicates with the common bile duct, while in 11 (16.93%) specimens, the accessory pancreatic duct communicates with the main pancreatic duct. 12 (66.67%) accessory pancreatic ducts opened into the minor duodenal papilla, while 5 (27.78%) into the major duodenal papilla and 1 (5.55%) into the 3rd duodenal papilla. Conclusion: Several variations were observed in accessory pancreatic duct pattern in terms of their course, opening and communications. However, no significant differences were evident in any parameter among the age groups. Here, females were excluded due to less availability of the female cadaveric pancreas during study period.

Compression of the Main Pancreatic Duct by the Intrapancreatic-Replaced Common Hepatic Artery

We describe a unique case of a patient who presented with a linear, transverse, and incidentally-detected main pancreatic duct dilatation that was caused by the intrapancreatic-replaced common hepatic artery, detected on the MDCT, MRCP and endoscopic retrograde cholangiopancreatography. We believe this case to be the first of its kind reported in the literature.

A Case of Mucinous Cystic Neoplasm of the Pancreas Communicating with the Main Pancreatic Duct / 대한소화기내시경학회지

Diagnoses of cystic lesions in the pancreas are increasing in clinical practice because of the wider use of imaging studies. The selection of appropriate treatment depends on the ability to distinguish between benign and malignant cysts. However, cystic pancreatic neoplasms are sometimes misdiagnosed as pseudocysts and treated improperly. We experienced a case of mucinous cystic neoplasm of the pancreas misdiagnosed as a pseudocyst, which had a communication between the cyst and the main pancreatic duct.

Patterns of the opening of the common bile duct and main pancreatic duct in Thais.

Common bile duct and main pancreatic duct of 89 Thai cadavers; 52 males and 37 females, were studied. Five types of the pattern of opening of common bile duct main pancreatic duct were found. The types which both ducts united to be hepatopancreatic duct before opening into the duodenal lumen were more common than the individual opening types, found in 61.8% and 35.95% respectivity. The rest was a special type which pancreatic duct divided into two channels : one channels : one channel joined common bile duct outside duodenum and the other joined the common bile duct in the wall of duodenum. The distribution of types in both sexes were not statistically significant difference. The length of hepatopancreatic duct varied from 1.3 to 11.95 millemeters.