scholarly journals Nikander's Thesis: Studies on the exocrine ducts of the pancreas and the liver in reindeer (Rangifer tarandus tarandus L)

Rangifer ◽  
1991 ◽  
Vol 11 (2) ◽  
pp. 25
Author(s):  
Sven Nikander

<p>This thesis is based on the following papers, which will be referred to in the next by their Roman numerals:</p><p>I Nikander, S. 1990. On the anatomy and topography of the pancreas and the pancreatic duct in reindeer (Rangifer tarandus tarandus L.). Rangifer 10: 25-29.</p><p>II Rahko, T. &amp; Nikander, S. 1990. Macroscopical and microscopical studies of the common bile duct in reindeer (Rangifer tarandus tarandus L.). Rangifer 10: 3-8.</p><p>III Rahko, T. &amp; Nikander, S. 1990. Histochemical studies of the common bile duct in reindeer. Rangifer 10: 9-15.</p><p>IV Rahko, T. &amp; Nikander, S. 1990. Electron microscopical studies of the common bile duct in reindeer. Rangifer 10: 17-23.</p><p>V Nikander, S. &amp; Rahko, T. 1990. Ultra-structure of granulated cells in the bile duct of reindeer. Rangifer Special Issue No. 3: 363-367.</p>

2019 ◽  
Vol 17 (Sup8) ◽  
pp. S8-S14
Author(s):  
Muhammad Waqas Fazal ◽  
Maria Tan ◽  
Shyam Menon

Endoscopic retrograde cholangiopancreatography (ERCP) facilitates endoscopic access to the common bile duct and pancreatic duct. It has become central to the management of a variety of benign and malignant pancreatobiliary disorders. ERCP remains a technically challenging procedure and patient selection and pre-assessment is critical to ensure good clinical outcomes. Staff assisting in ERCP should familiarise themselves with the underlying principles and basic knowledge pertaining to various aspects of ERCP.


2020 ◽  
Vol 10 (4) ◽  
pp. 392-396
Author(s):  
Rani Abu Elgasim ◽  
Ahmed Abukonna ◽  
Ala Elgyoum ◽  
Mogahid Zidan ◽  
Mustafa Mahmoud ◽  
...  

The purpose of our study was to evaluate the common bile duct (CBD) and pancreatic duct (PD) diameter among healthy adult Sudanese subjects using magnetic resonance cholangiopancreatography (MRCP). In addition, this study aimed to determine the effects of age, gender, and body height and weight on the CBD and PD diameters to establish a reference range for these ducts on MRCP, which is very useful in a daily clinical setting where MRCP is commonly performed to evaluate suspected biliary tract disease. Methods and Results: This study included 80 asymptomatic subjects who underwent MRCP. The widest diameter of the CBD and PD was measured perpendicular to their long axes using the electronic caliper. The applied MRCP imaging technique was in line with the guidelines used by Chen et al.(2012) The age, gender, medical history, body height and body weight were recorded. Among the 80 subjects, the mean CBD diameter on MRCP was 6.17±0.69 mm (range of 4-8 mm). There was a significant correlation between the CBD diameter and weight (r=0.407, P<0.001). The mean PD diameter on MRCP was 3.80±0.50mm (range of 2-5 mm). There was also a significant correlation between the PD diameter and weight (r=0.407, P<0.001). In the cohort of 80 subjects, the mean CBD diameter in females was larger than in males(6.50±0.632mm and 5.95±0.677mm, respectively), and this difference was statistically significant (P<0.05). Also, the mean PD diameter in females was statistically larger than in males (6.03±0.66mm and 5.58±0.675mm, respectively), and this difference was statistically significant (P<0.05). Our results demonstrate no significant correlation between the diameter of CBD and PD and participants' height and age. Conclusion: The importance of the current study lies in it’s being one of the few studies whose intention was to use MRCP to bridge the knowledge gap in the literature about the measurement of the CBD and PD diameter among healthy adult Sudanese subjects.


Rangifer ◽  
1990 ◽  
Vol 10 (1) ◽  
pp. 3
Author(s):  
Timo Rahko ◽  
Sven Nikander

<p>The histological structure and secretory function of the common bile duct (<em>ductus hepaticus communis</em>) has not been previously described in reindeer. Macroscopical studies were thus performed in 25 reindeer to reveal the morphology and topography of the ductus hepaticus communis and adjoining organs. Histologic structure of the common bile duct was investigated in 20 animals. Our studies showed that the ductus hepaticus communis and pancreaticus join about 2 cm before the duodenal opening to form the common duct. The common bile duct is an elastic tube about 3 to 5 cm long and 2 to 3 mm thick partly surrounded by fat and pancreatic tissues. The wall of the duct, being about 1 mm thick by light microscopy, consisted of folded mucosa surrounded by connective tissue fibres and a serosal layer. Distally, also muscular bands were seen. In some areas separate leucocytes and even lymphatic nodules were present. Surprisingly pancreatic acini occurred in certain areas of the wall, even in close contact to subepithelial tissues. Mucosal epithelium consisted of surface and glandular epithelial cells with mucous secretion. Numerous intraepithelial globule leucocytes were identifiable within the lamina epithelialis.</p><p>Tutkimus yhteisen sappik&auml;yt&auml;v&auml;n rakenteesta porolla.</p><p>Abstract in Finnish / Yhteenveto: Yhteisen sappik&auml;yt&auml;v&auml;n (<em>ductus hepaticus communis</em>) histologista rakennetta ja eritystoimintaa ei ole aikaisemmin kuvattu porolla. Makroskooppisia tutkimuksia suoritettiin 25 porolla yhteisen sappik&auml;yt&auml;v&auml;n rakenteen ja topografian selvitt&auml;miseksi. Sein&auml;m&auml;n histologinen rakenne selvitettiin 20 porolla. Tutkimukset osoittivat, ett&auml; porolla <em>ductus hepaticus communis</em> ja ductus pancreaticus yhtyv&auml;t noin 2 cm ennen ohutsuolta muodostaakseen yhteisen tiehyeen. <em>Ductus hepaticus communis</em> on noin 3-5 cm pitk&auml; ja 2-3 mm:n l&auml;pimittainen k&auml;yt&auml;v&auml;. Se on elastinen ja osit-tain rasva- ja haimakudoksen ymp&auml;r&ouml;im&auml;. Sein&auml;m&auml; on mikroskooppisesti noin 1 mm paksu. Sis&auml;osan muodostaa poimuuntunut limakalvo. Limakalvoa ymp&auml;r&ouml;iv&auml;t sidekudoss&auml;ikeet ja serosa, sappik&auml;yt&auml;v&auml;n loppuosassa my&ouml;s lihass&auml;ikeist&ouml;. Sein&auml;m&auml;ss&auml; havaittiin yksitt&auml;isi&auml; valkosoluja ja imusolukasautumia. Poikkeuksellisena anatomisena piirteen&auml; voidaan pit&auml;&auml; haimasaarekkeiden esiintymist&auml; sappik&auml;yt&auml;v&auml;sein&auml;m&auml;n kudoksissa jopa l&auml;heisess&auml; kosketuksessa pintaepiteeliin. Limakalvon epiteelikudos on sek&auml; pinta- ett&auml; rauhassolukkoa, joka eritt&auml;&auml; limaa. Epiteeliss&auml; tunnistettiin lukuisia ker&auml;ssoluja huolimatta siit&auml;, ett&auml; poroille oli suoritettu loish&auml;&auml;t&ouml; edellisen&auml; syksyn&auml;.</p><p>Studier av gallg&aring;ngen (<em>ductus hepaticus communis</em>) hos ren.</p><p>Abstract in Swedish / Sammandrag: Den gemensamma gallg&aring;ngens histologi och sekretoriska funktion hos renen har inte tidigare beskrivits. F&ouml;r att klarl&auml;gga den makroskopiska byggnaden och topografin av den gemensamma gallg&aring;ngen (<em>ductus hepaticus communis</em>) unders&ouml;ktes dessa i 25 renar. V&auml;ggen i 20 gallg&aring;nger granskades histologiskt. Unders&ouml;kningarna visade att <em>ductus pancreaticus</em> mynnar ut i <em>ductus hepaticus communis</em> bildande en gemensam utforselg&aring;ng till duodenum. <em>Ductus hepaticus communis</em> &auml;r c. 2-3 mm i diameter och 3-5 cm l&aring;ng. Den elastiska gangens v&auml;gg &auml;r c. 1 mm tjock delvis omgiven av fett- och pankreasv&auml;vnad. Gangens v&auml;gg best&aring;r av serosa, bindv&auml;vsfibrer och n&auml;ra mynningen ses muskelfibrer. Insidan av g&aring;ngen &auml;r bekl&auml;dd med en veckad slemhinna. Lymfatisk v&auml;vnad och enstaka lymfocyter observeras. Anm&auml;rkningsv&auml;rt &auml;r att pankreasv&auml;vnad f&ouml;rekommer i gallg&aring;ngens v&auml;gg och under slemhinnan. Slemhinnans epitel best&aring;r av yt- och k&ouml;rtelepitel som avs&ouml;ndrar slem. De globul&auml;ra leukocyterna var talrika i epitelet trots att renarna avmaskats p&aring; h&ouml;sten.</p>


Pancreatology ◽  
2018 ◽  
Vol 18 (4) ◽  
pp. S61
Author(s):  
Georg Beyer ◽  
Florian Kasprowicz ◽  
Anke Hannemann ◽  
Ali Aghdassi ◽  
Henry Völzke ◽  
...  

2016 ◽  
Vol 98 (6) ◽  
pp. e92-e93 ◽  
Author(s):  
M Kostalas ◽  
P Jackson ◽  
N Karanjia

Introduction Brunner’s glands are submucosal glands found in the duodenum. Proliferation of these glands can lead to the formation of Brunner’s gland hamartomas (BGHs), which are uncommon, asymptomatic and usually found incidentally. They are predominantly benign lesions, but instances of malignant transformation have been reported. Case History We describe a rare case in which a periampullary lesion was causing biliary obstruction on a background of weight loss, and was associated with dilatation of the common bile duct and pancreatic duct on computed tomography and magnetic resonance imaging. Further investigation with endoscopic ultrasound and biopsy did not provide a definitive diagnosis. Given the symptoms and findings upon investigations, we proceeded to pylorus-preserving pancreatoduodenectomy. Conclusions This was a rare case in which BGH gave rise to biliary obstruction against a background of weight loss. Due to a high index of suspicion (weight loss and evidence of dilatation of the common bile duct and pancreatic duct), this procedure was justified because the consequences of a missed periampullary cancer far outweighed surgical risks.


1993 ◽  
Vol 74 (3) ◽  
pp. 228-230
Author(s):  
I. I. Kamalov

Changes of an inflammatory, tumor nature in the biliary tract are primarily associated with various disorders of the gastrointestinal tract. Cholecystitis is usually accompanied by duodenal dyskinesia. With acalculous cholecystitis (32 obs.), Hypomotor dyskinesia occurs, with calculous cholecystitis (68 obs.), Hypermotor dyskinesia of the duodenum. Various forms of cholecystitis (calculous, bacterial, parasitic, enzymatic) and, less often, pancreatitis develops secondarily. The primary driver of their development is impaired motility of the duodenum. In the pancreatic duct, the pressure is 98 Pa higher than in the common bile duct, -981 Pa.


2015 ◽  
Vol 45 (8) ◽  
pp. 1153-1159 ◽  
Author(s):  
Kriti Gwal ◽  
Maria A. Bedoya ◽  
Neal Patel ◽  
Siri J. Rambhatla ◽  
Kassa Darge ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document