scholarly journals Criteria for the Selection of Diagnostic Signs of Chronic Pancreatitis with Obstruction of the Main Pancreatic Duct

2020 ◽  
Vol 13 (2) ◽  
pp. 76-85
Author(s):  
Alexander R Propp ◽  
Evgeny Nikolaevich Degovtsov
Keyword(s):  
Chronic Pancreatitis ◽  
Pancreatic Duct ◽  
Main Pancreatic Duct ◽  
Structural Changes ◽  
Early Stage ◽  
Pancreatic Head ◽  
Diagnostic Methods ◽  
Entire Length ◽  
Diagnostic Signs ◽  
Selection Of

Introduction. Clinical outcomes of surgery for patients with chronic pancreatitis (CP), considering low rates of 10-year survival, are often unsatisfying for surgeons. Due to the absence of common diagnostic criteria, especially at an early stage of the disease, patients of young and working age undergo surgery at different periods and with different methods. The development of optimal criteria for the selection of diagnostic signs of chronic pancreatitis will improve treatment outcomes.The aim of the study is 1) to perform a comparative assessment of the informative value of methods that specify diagnostics of CP with obstruction of the main pancreatic duct; 2) to develop criteria for the selection of diagnostic signs to highlight the main types of structural changes in the pancreas in chronic pancreatitis with obstruction of the main pancreatic duct.Materials and methods. The study included radiological findings of 231 patients with CP with obstruction of the main pancreatic duct operated from 1996 to 2018 in Omsk regional surgical hospital. X-ray investigations were performed in 120 patients, ultrasound investigations were performed in 231 patients, multislice spiral computed tomography (MSCT) was performed in 226 patients, MRI was performed in 18 patients, endoscopic retrograde cholangiopancreatography (ERCP) was performed in 22 patients and angiography was performed in 5 patients. All patients were divided into two groups: control (n ​​= 88, until 2008) and case (n = 143, after 2008), where new methods of surgery were used and the structure of the applied diagnostic methods has been changed.Results. Ultrasound sensitivity was 74.5%, fistulography/virsungography sensitivity was 80%, MSCT sensitivity was 97.8%, MRI sensitivity was 88.9% and ERPC sensitivity was 95.5%. The use of invasive diagnostic methods in the main group of patients was minimized with the priority of MSCT. The main criteria for the selection of diagnostic signs of CP were determined as follows: obstruction of the main pancreatic duct (with localization at the level of the pancreatic head exclusively or along its entire length), dilatation of the main pancreatic duct (more than 3 mm), local damage to the pancreatic head with an increase in its size over 32 mm, cystic formations (more than 5 mm) in the projection of any part of the pancreas. The main types of structural changes in the pancreas were identified as follows: 1. CP with obstruction of the main pancreatic duct at the level of the pancreatic head exclusively; 2. CP with obstruction of the main pancreatic duct along its entire length with an increase in the size of the pancreatic head; 3. CP with obstruction of the main pancreatic duct along its entire length without an increase in the size of the pancreatic head.Conclusion. 1) MSCT has the highest sensitivity in CP diagnostics (98.6%). MRI (Magnetic Resonance Cholangiopancreatography (MRCP)) complements MSCT and replaces it in case of patients intolerance to contrast media. Indications for ERCP should be minimized. 2) The designed criteria for the selection of diagnostic signs of CP will optimize diagnostics of chronic pancreatitis with obstruction of the main pancreatic duct and highlight the main types of structural changes in the pancreas, the fact being important for validation of surgical treatment methods and techniques.

scholarly journals Immediate and Long-Term Results of Original Methods of Longitudinal Pancreatojejunostomy With The Expansion of the Area of Pancreatojejunal Anastomosis

2020 ◽  
Vol 9 (1) ◽  
pp. 35-45
Author(s):  
A. R. Propp ◽  
E. N. Degovtsov ◽  
S. A. Nikulina
Keyword(s):  
Chronic Pancreatitis ◽  
Pancreatic Duct ◽  
Main Pancreatic Duct ◽  
Comparison Group ◽  
Pancreatic Head ◽  
Main Group ◽  
Long Term Results ◽  
Hospital Treatment ◽  
Enzyme Preparations

RELEVANCE. The dependency results of draining operations on the efficcacy of drainig of ductal system of the pancreas and adequate outflow of the pancreatic juce through anastomosis are undoubtful, therefore the development of new techniques of longitudinal pancreatojejunostomy (LPJ) extending area of anastomosis is an actual challenge.AIM OF STUDY. To compare the immediate and long-term results of longitudinal pancreatojejunostomy with the expansion of the area of anastomosis in patients with chronic pancreatitis.MATERIAL AND METHODS. We analysed immediate and long-term results of LPJ in 58 patients with chronic pancreatitis with impaired patency of the major pancreatic duct (MPD) without the head enlargement.RESULTS. All patients were divided into two groups: comparison group ( n=26, operated up to 2008 ) and main group (n=32, operated stumps during the MPD diastasis and posterior pancreatic surface (n=3) into anastomosis, with resection of the anterior pancreatic surface in the form of triangular fragments (n=11), with circulation of the small intestine loop during the recovery phase (n=19). The original LPJ in the study group of patients did not lengthened the surgery (160 [135, 185]) and intraoperative blood loss (265 [175, 340]). In the main group of patients there was no postoperative complications and fatal outcomes, but the average duration postoperative hospital treatment (18 [16; 20.5]) exceeded some data of foreign and domestic authors. Pain within 5 years after surgery in patients of the main group exceeded 26.6% and the appearance of diarrheal syndrome with dependance from reception of enzyme preparations was twice lower than in patients og the comparison group. According to questionnaire EORTC QLQ-C30, 5 years after surgery statistically significant differences between groups in terms of scales CF, NV, DY (p=0.03, 0.02, 0.006 respectively), indicating the advantage of intervention performed in the mail group.CONCLUSIONS. 1. An indication for longitudinal pancreatojejunostomy in chronic pancreatitis is impaired patency of the main pancreatic duct in the absence of an increase and inflammatory mass in the pancreatic head.2. The width of the main pancreatic duct is less than 5 mm and the presence of diastasis between its proximal and distal stumps with the posterior surface of the pancreas preserved, is not a reason for refusing longitudinal pancreatic jujunostomy in favor of the resection method.3. The expansion of pancreatojejunal anastomosis when performing longitudinal pancreatojejunostomy can improve the immediate and longterm results of surgical treatment for chronic pancreatitis.

scholarly journals Type 1 Autoimmune Pancreatitis Can Transform into Chronic Pancreatitis: A Long-Term Follow-Up Study of 73 Japanese Patients

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Masahiro Maruyama ◽  
Norikazu Arakura ◽  
Yayoi Ozaki ◽  
Takayuki Watanabe ◽  
Tetsuya Ito ◽  
...  
Keyword(s):  
Risk Factors ◽  
Chronic Pancreatitis ◽  
Pancreatic Duct ◽  
Autoimmune Pancreatitis ◽  
Main Pancreatic Duct ◽  
Univariate Analysis ◽  
Pancreatic Head ◽  
Progression Rate ◽  
Pancreatic Body

Some patients with autoimmune pancreatitis (AIP) form pancreatic stones suggestive of transformation into chronic pancreatitis (CP). The present study examined the underlying risk factors and mechanism of AIP progression to confirmed CP. We compared the clinical and laboratory parameters of subjects who progressed to confirmed CP with those of the subjucts who did not in a cohort of 73 type 1 AIP patients. A total of 16 (22%) AIP patients progressed to CP. Univariate analysis revealed that relapse was significantly more frequent in the progression group, and multivariate analysis indicated that pancreatic head swelling (OR 12.7,P=0.023) and nonnarrowing of the main pancreatic duct in the pancreatic body (OR 12.6,P=0.001) were significant independent risk factors for progression to CP. Kaplan-Meier testing showed that the progression rate to CP was approximately 10% at 3 years and 30% at 10 years in total AIP patients and 30% at 3 years and 60% at 10 years in subjects with both risk factors. AIP with pancreatic head swelling and a history of relapse may cause pancreatic juice stagnation and nonnarrowing of the main pancreatic duct in the pancreatic body, which can progress to advanced stage chronic pancreatitis.

scholarly journals Defining the endoscopic ultrasound features of chronic pancreatitis in Asians: a multicenter validation study

Endoscopy ◽  
2020 ◽  
Author(s):  
Calvin Jianyi Koh ◽  
Sundeep Lakhtakia ◽  
Mitsuhiro Kida ◽  
Cosmas Rinaldi A. Lesmana ◽  
Tiing Leong Ang ◽  
...  
Keyword(s):  
Chronic Pancreatitis ◽  
Pancreatic Duct ◽  
Endoscopic Ultrasound ◽  
Main Pancreatic Duct ◽  
Cross Sectional Study ◽  
Cancer Surveillance ◽  
Receiver Operating Curve ◽  
Cross Sectional ◽  
Multicenter Prospective Study ◽  
Ultrasound Features

Background Although endoscopic ultrasound (EUS) features and criteria have been described in chronic pancreatitis, challenges remain with interoperator variability and ease of adoption. The aim of this study was to define and validate the EUS features of chronic pancreatitis in a multicenter prospective study in Asia. Method The study was divided into two parts: the first part was conducted to derive the EUS features of chronic pancreatitis with adequate interoperator agreement; the second was to prospectively evaluate these features in a multicenter cross-sectional study and determine the optimal combination of features for the diagnosis of chronic pancreatitis. Prospectively enrolled cases had standard internationally validated radiologic or histologic features of chronic pancreatitis, and controls were patients without chronic pancreatitis who underwent EUS examination. Results The top six EUS features that had good interobserver agreement (mean kappa 0.73, range 0.60 – 0.90) were selected to be further evaluated in part II of the study. These included: hyperechoic foci with shadowing, lobularity with honeycombing, cysts, dilated main pancreatic duct, dilated side branches, and calculi in the main pancreatic duct. A total of 284 subjects (132 cases, 152 controls) were enrolled from 12 centers in Asia. All six features had high accuracy ranging from 63.3 % to 89.1 %. Two or more of these six EUS features accurately defined chronic pancreatitis (sensitivity 94.7 %, specificity 98.0 %), with an area under the receiver operating curve of 0.986. Conclusion This multicenter Asian study characterized and defined the EUS features of chronic pancreatitis. This provides a useful tool in clinical practice and further research in pancreatic cancer surveillance.

scholarly journals Anatomical Patterns of the Pancreatic Ductal System – A Cadaveric and Magnetic Resonance Cholangiopancreatography Study

2019 ◽  
Vol 36 (04) ◽  
pp. 279-285
Author(s):  
Mythraeyee Prasad ◽  
Sipra Rout ◽  
Tharani Putta ◽  
Reuben Thomas Kurien ◽  
Sudipta Dhar Chowdhury ◽  
...  
Keyword(s):  
Chronic Pancreatitis ◽  
Magnetic Resonance ◽  
Pancreatic Duct ◽  
Main Pancreatic Duct ◽  
Pancreas Divisum ◽  
Magnetic Resonance Cholangiopancreatography ◽  
Radiological Study ◽  
Ductal System ◽  
Type Iii ◽  
Ansa Pancreatica

Abstract Introduction Morphological variants of the pancreatobiliary system can predispose to chronic pancreatitis. The goal of the present study is to assess the prevalence of pancreatic duct patterns in the Indian population, both by cadaveric dissection and by magnetic resonance cholangiopancreatography (MRCP). Materials and Methods A total of 15 adult pancreas specimens of unknown age and gender, and 5 fetal pancreas specimens of different gestational ages with the intact second part of duodenum, were dissected by the piecemeal method. For clinical relevance, MRCP images of 103 clinically-diagnosed chronic pancreatitis patients irrespective of their etiology were obtained retrospectively from the existing database and studied. The anatomical patterns were classified as five different types based on the course of the main pancreatic duct and the accessory pancreatic duct and their openings into the duodenal wall, including variants like pancreas divisum and ansa pancreatica. Results In the cadaveric study, the main pancreatic duct was single with a straight course in 46.67% of the adult specimens, and in the MRCP study, the main pancreatic duct showed a descending course in 77.66% of the cases. The most common pattern was type III in both the cadaveric (80%) and radiological (55.33%) studies, and the accessory duct was absent on the MRCP in all type-III cases, while it ended blindly in the cadaveric specimens. Ansa pancreatica (type V) was observed in 1 adult specimen (6.7%), but not in the radiological study. Pancreas divisum (type IV) was observed in the 8 cases (7.76%) cases in the radiological study. Conclusion Knowledge of the anatomical variants of the pancreatic ductal system may be helpful for the radiologists during diagnostic and therapeutic interventional procedures.

Pancreatic head resection preserving the main pancreatic duct for congenital hyperinsulinism of infancy

2012 ◽  
Vol 28 (9) ◽  
pp. 935-937 ◽  
Author(s):  
Masayuki Obatake ◽  
Kyoko Mochizuki ◽  
Yasuaki Taura ◽  
Yukio Inamura ◽  
Akiko Nakatomi ◽  
...  
Keyword(s):  
Pancreatic Duct ◽  
Main Pancreatic Duct ◽  
Pancreatic Head ◽  
Congenital Hyperinsulinism ◽  
Pancreatic Head Resection

scholarly journals Comparison Between Dunking (Invagination) Pancreaticojejunoanastomosis and Double Layer Duct to Mucosa Anastomosis After Cephalic Duodenopancreatectomy-Whipple Procedure for Pancreatic Cephalic Carcinoma

PRILOZI ◽  
2020 ◽  
Vol 41 (3) ◽  
pp. 39-47
Author(s):  
Aleksandar Shumkovski ◽  
Ljubomir Ognjenovic ◽  
Stojan Gjoshev
Keyword(s):  
Overall Survival ◽  
Pancreatic Fistula ◽  
Pancreatic Duct ◽  
Double Layer ◽  
Main Pancreatic Duct ◽  
Pancreatic Head ◽  
Postoperative Pancreatic Fistula ◽  
Postoperative Reflux ◽  
Soft Pancreas ◽  
Significant Difference

AbstractIntroduction: Pancreatic cancer is malignancy with poor prognosis for quality of life and overall survival. The incidence is variant, 7.7/100,000 in Europe, 7.6/100,000 in the USA, 2.2/100.000 in Africa. The only real benefit for cure is surgery, duodenopancreatectomy. The key points for this procedure are radicality, low morbidity and low mortality, the follow up and the expected overall survival. The benchmark of the procedure is the pancreaticojejunoanastomosis, with its main pitfall, postoperative pancreatic fistula B or C. Subsequently, the manner of creation of pancreaticojejunoanastomosis defines the safety, thus the postoperative morbidity and mortality. Finally, this issue remarkably depends on the surgeon and the surgical technique creating the anastomosis. We used 2 techniques with interrupted sutures, dunking anastomosis and duct-to-mucosa double layer technique. The objective of the study was to compare these 2 suturing techniques we applied, and the aim was to reveal the risk benefit rationale for dunking either duct to mucosa anastomosis.Material and method: In our last series of 25 patients suffering pancreatic head carcinoma we performed a standard dodenopancreatectomy. After the preoperative diagnosis and staging with US, CICT, tumor markers, they underwent surgery. Invagination-dunking anastomosis was performed in 15, whereas, duct-to-mucosa, double layer anastomosis was performed in 10. In the first group with dunking anastomosis, we had 6 patients with soft pancreas and 8 with narrow main pancreatic duct, less than 3 mm. In the duct-to-mucosa group there were 5 patients with soft pancreas and 4 with narrow main pancreatic duct. All other stages of surgery were unified, so the only difference in the procedure remained on the pancreatojejunoanastomosis. The onset of the postoperative pancreatic fistula was estimated with revelation of 3 fold serum level of alfa amylases from the third postoperative day in the drain liquid.Results: In the duct to mucosa group there wasn’t a clinically relevant postoperative pancreatic fistula, while in the dunking anastomosis group we had 4 postoperative pancreatic fistula B, 26 %. One of these 4 patients experienced intraabdominal collection – abscess, conservatively managed with lavation through the drain. Comparing the groups, there was no significant difference between the groups concerning the appearance of postoperative pancreatic fistula: p>0.05, p=0.125. From all 25 patients, in 21 patients biliary stent was installed preoperatively to resolve the preoperative jaundice. All 21 suffered preoperative and postoperative reflux cholangitis, extending the intra-hospital stay.Conclusion: So far, there have been many trials referring to opposite results while comparing these 2 techniques in creation of the pancreticojejunoanastomosis. In our study, the duct to mucosa anastomosis prevailed as a technique, proving its risk benefit rationale. However, further large randomized clinical studies have to be conducted to clarify which of these procedures would be the prime objective in the choice of the surgeon while creating pancreatojejunoanastomosis.

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