Acute Relapsing Pancreatitis - Touch Gastroenterology
Acute Relapsing Pancreatitis - Touch Gastroenterology
Acute Relapsing Pancreatitis - Touch Gastroenterology
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Myriam Delhaye is an Associate<br />
Clinical Director in the<br />
Medicosurgical Department of<br />
<strong>Gastroenterology</strong> (headed by<br />
Professor Jacques Devière) at the<br />
Erasme University Hospital.<br />
Together with the team directed by<br />
Professor Michel Cremer, she was<br />
involved in the controversy<br />
surrounding the clinical significance<br />
of pancreas divisum and she<br />
pioneered the use of extracorporeal<br />
shock wave lithotripsy of bile duct<br />
and pancreatic stones in 1987.<br />
Dr Delhaye’s main research interests<br />
are inflammatory pancreatic<br />
diseases, pancreatic cystic neoplasms<br />
and endoscopic therapeutic<br />
procedures for biliopancreatic<br />
diseases. She completed a five-year<br />
academic residency in internal<br />
medicine with a two-year fellowship<br />
in gastroenterology at Erasme<br />
University Hospital. She obtained<br />
her MD from the Free University of<br />
Brussels in 1979.<br />
1<br />
a report by<br />
Myriam Delhaye<br />
Associate Clinical Director, Medicosurgical Department of <strong>Gastroenterology</strong>, Erasme University Hospital<br />
<strong>Acute</strong> relapsing pancreatitis (ARP) represents a<br />
challenging clinical problem in the field of<br />
hepatobiliary and pancreatic disorders. It is associated<br />
with significant morbidity, impairment in quality of<br />
life and a negative impact on medical costs. <strong>Acute</strong><br />
pancreatitis is a common condition with a reported<br />
yearly incidence ranging between 300 and 500<br />
patients per million per year in the Western world. 1<br />
Without an adequate initial work-up and directed<br />
therapy, more than half of the patients with an initial<br />
attack of acute pancreatitis may suffer recurrent<br />
attacks or develop chronic pancreatitis. 2<br />
Definitions<br />
<strong>Acute</strong> pancreatitis is defined as typical pancreatic<br />
abdominal pain (mid-epigastric with radiation to the<br />
back) persisting for several hours, associated with<br />
elevation of serum amylase or lipase (to more than<br />
three times the normal levels).<br />
ARP is defined as two or more well-documented<br />
separate episodes of pancreatitis (pain and abnormal<br />
laboratory studies) that resolve between attacks. 3<br />
Evidence of pancreatitis should be documented by<br />
computed tomography (CT) or magnetic resonance<br />
imaging (MRI) during at least one episode.<br />
<strong>Acute</strong> idiopathic pancreatitis is a term used when no<br />
underlying cause has been identified.<br />
Causes of ARP<br />
Reference Section<br />
<strong>Acute</strong> <strong>Relapsing</strong> <strong>Pancreatitis</strong><br />
An aetiology can be found in 70% to 80% of patients<br />
after an attack of acute pancreatitis, with alcohol<br />
abuse and gallstone disease most often implicated. 4<br />
Causes of ARP can be classified as follows.<br />
Toxic/Metabolic Causes<br />
Alcohol-induced pancreatitis is easily identified based<br />
on clinical history.<br />
Hypercalcaemia (due to hyperparathyroidism in<br />
more than 90% of cases) and hypertriglyceridaemia<br />
(>1,000mg/dl is usually necessary) are established but<br />
rare causes of ARP. 5<br />
Many medications have been implicated as causes of<br />
acute pancreatitis with a dose-dependent or<br />
idiosyncratic mechanism for the majority of cases, 4<br />
but are most often associated with a single episode of<br />
acute pancreatitis rather than ARP.<br />
Mechanical Causes<br />
Mechanical causes can induce a persistent or transient<br />
obstruction of pancreatic juice flow into the<br />
duodenum, with a consequent rise in intraductal<br />
pancreatic pressure. Potential causes of impaired<br />
pancreatic drainage include:<br />
• migration of biliary stones, microlithiasis (
Biliary or pancreatic SOD are divided into the<br />
following three types: 8,10,11<br />
• Type 1 corresponds to patients with biliary- or<br />
pancreatic-type pain, elevation of liver function<br />
tests or pancreatic hydrolases, and dilation of the<br />
common bile duct (>12mm in diameter) or the<br />
main pancreatic duct (>5mm in diameter). Type 1<br />
is considered to be due to a chronic inflammatory<br />
process (probably secondary to passage of biliary<br />
lithiasis or microlithiasis through the sphincter),<br />
which becomes a fibrosis with subsequent stenosis<br />
of part of or the entire sphincter.<br />
• Type 2 is considered for patients with biliary- or<br />
pancreatic-type pain and only one other criterion<br />
(abnormal laboratory tests or ductal dilation). These<br />
patients are thought to suffer from a functional<br />
alteration of the physiological motility of the<br />
sphincter that causes some delay in the passage of<br />
biliary or pancreatic juices into the duodenum.<br />
• Type 3 is reported for patients with only typical<br />
clinical symptoms.<br />
Pancreas divisum (PD) is the most common<br />
congenital variant of the human pancreas occurring<br />
in 5% to 10% of Caucasian individuals. 12,13 Less than<br />
5% of the population with PD ever develop<br />
pancreatic symptoms; subsequently, PD seems to<br />
have little clinical relevance. 2<br />
Although controversial, it is postulated that a relative<br />
outflow obstruction at the site of the minor papilla<br />
overburdened by draining of the larger dorsal<br />
pancreas may be the mechanism of pancreatitis in<br />
some patients with PD and unexplained ARP. 4,14<br />
However, the frequency of PD is similar in control<br />
patients, patients with chronic pancreatitis and<br />
patients with idiopathic pancreatitis. 12,15<br />
Recruitment bias (greater frequency of PD diagnosis in<br />
patients referred after unsuccessful opacification of the<br />
pancreatic ductal system) may have resulted in an<br />
overestimation of the prevalence of PD in endoscopic<br />
retrograde cholangio-pancreatography (ERCP) studies<br />
investigating suspected idiopathic ARP. 16 It has been<br />
shown that a persistent dilation of the main pancreatic<br />
duct greater than 3mm at 10 minutes after secretin<br />
injection assessed during secretin-enhanced magnetic<br />
resonance cholangio-pancreatography (S-MRCP) is<br />
correlated with a clinical diagnosis of papillary<br />
stenosis. 15,17 However, the frequency of such a<br />
response to secretin suggesting a functional or organic<br />
stenosis of the major or minor papilla is the same in<br />
patients with or without PD. 15 Other abnormalities<br />
that have been associated with ARP include<br />
anomalous pancreaticobiliary union, choledochocele,<br />
duodenal duplication cyst and annular pancreas. 18<br />
BUSINESS BRIEFING: EUROPEAN GASTROENTEROLOGY REVIEW 2005<br />
<strong>Acute</strong> <strong>Relapsing</strong> <strong>Pancreatitis</strong><br />
Figure 1: Coronal View on T2-weighted MRI, S-MRCP and ERCP of a<br />
42-year-old Man with Prior Cholecystectomy having Presented with<br />
10 Attacks of <strong>Acute</strong> <strong>Pancreatitis</strong> over Two Years<br />
A B<br />
C D<br />
A 42-year-old man with a history of cholecystectomy presented 10 attacks of acute pancreatitis over two years during which<br />
he was admitted to hospital five times. This coronal view on T2-weighted MRI (A) and S-MRCP (B) showed a 2cm<br />
communicating cytic lesion at the junction of body and tail of the pancreas. ERCP demonstrated a normal ductal system in<br />
the head of the pancreas (C) and a typical branch duct type of intraductal papillary mucinous tumour (IPMT) with intraductal<br />
filling defect corresponding to mucus (D). A segmental pancreatectomy was performed and pathology revealed a branch duct<br />
IPMT with in situ carcinoma.<br />
An isolated, unexplained pancreatic duct stricture<br />
discovered during the work-up of a first episode of<br />
acute pancreatitis in a patient over 35 years of age<br />
without predisposing cause requires exclusion of an<br />
underlying pancreatic carcinoma. 5<br />
Intraductal papillary mucinous tumour (IPMT) is the<br />
most frequent neoplasm associated with ARP. It is an<br />
intraductal pre-malignant lesion producing mucin that<br />
blocks the pancreatic duct, thus impeding outflow and<br />
encouraging bouts of pancreatitis. IPMT is characterised<br />
by dilation and filling defects of the main pancreatic<br />
duct or of the branch duct system (see Figure 1). 19<br />
Miscellaneous Causes<br />
Genetic diseases can be identified as rare causes of acute<br />
and recurrent pancreatitis mainly in subjects with early<br />
onset of pancreatitis and with a history of first- or<br />
second-degree relatives with unexplained pancreatitis. 4<br />
These inherited causes are mainly related to cystic<br />
fibrosis transmembrane conductance regulator gene<br />
mutations, and trypsinogen-gene mutations.<br />
Autoimmune pancreatitis is also a rare entity<br />
characterised by mild pancreatitis associated with<br />
abnormal laboratory findings (e.g. elevated serum<br />
immunoglobulin (Ig)G4 levels and presence of autoantibodies),<br />
imaging studies showing a diffusely<br />
2
3<br />
Reference Section<br />
Figure 2: MRI and MRCP Images of a 51-year-old Woman having<br />
Presented with Seven Attacks of <strong>Acute</strong> <strong>Pancreatitis</strong> Since 1998<br />
A<br />
B C<br />
A 51-year-old woman presented seven attacks of acute pancreatitis since 1998. She underwent a cholecystectomy in<br />
May 2000, but acute pancreatitis recurred, with four attacks during the last 12 months. In this case, there was no alcohol<br />
abuse, no smoking and no drugs involved. A genetic origin remained possible, as family history was positive for one<br />
third-degree relative with unexplained ARP. However, genetic testing was negative in the patient. The CT scan showed no<br />
calcifications. T2-weighted MRI (A) and MRCP before (B) and after (C) secretin injection that were performed one week<br />
after the last attack of pancreatitis demonstrated a normal pancreatic gland and a normal main pancreatic duct. The<br />
dynamic response to secretin was also normal with a normal duodenal filling (C). Endoscopic ultrasonography was also<br />
performed and was normal. A pancreatic SOD type 2 is suspected (based on pancreatic-type pain and increased pancreatic<br />
hydrolases without dilation of the main pancreatic duct). An ERCP with dual endoscopic sphincterotomy and transient main<br />
pancreatic duct stenting has been proposed to the patient if another attack occurs.<br />
swollen pancreas and irregular narrowing of the duct<br />
due to lymphoplasmacytic infiltration, responding<br />
favourably to steroid therapy and sometimes<br />
associated with other autoimmune disorders. 5<br />
Finally, very rare miscellaneous causes of ARP<br />
include vascular disorders, infections (e.g.<br />
tuberculosis, virus and parasite), and tropical<br />
pancreatitis. 4 Among the patients without an obvious<br />
cause for ARP, this means that around 20% to 30% of<br />
all cases with ARP, SOD, PD and occult biliary<br />
stones and tumours are generally considered as<br />
aetiological associated factors in 30%, 20%, 20% and<br />
10%, respectively, leaving only approximately 20% of<br />
‘idiopathic’ ARP related to genetic, autoimmune,<br />
infectious and really unknown factors (see Figure 2). 20<br />
Initial Evaluation Procedures<br />
History and physical examination are probably the<br />
most important parts of the initial evaluation to<br />
search evidence for alcohol abuse, drug-induced<br />
pancreatitis and a family history of pancreatitis.<br />
Routine blood tests should include liver function tests<br />
within 24 to 48 hours of onset of symptoms (a three-<br />
fold or greater increase in the alanine aminotransferase<br />
(ALT) level is generally regarded as the best indicator<br />
of gallstone-induced pancreatitis), and the serum levels<br />
of calcium and triglyceride soon after admission<br />
(because of the drop in calcium and triglyceride levels<br />
due to fasting and administration of intravenous<br />
fluids). 8 Abdominal U/S is routinely performed in<br />
patients without previous cholecystectomy in order to<br />
detect gallbladder stones (with an accuracy of >90%).<br />
Contrast-enhanced CT scan is usually performed<br />
either in all patients during their first episode to<br />
confirm the diagnosis of acute pancreatitis and to<br />
assess the severity, 8 or only when the attack is severe,<br />
when the course is complicated, when aetiology<br />
remains unclear or in the elderly. 2<br />
Recently, the use of gadolinium-enhanced dynamic<br />
MRI was found to be comparable with contrastenhanced<br />
CT for the assessment of the severity of<br />
acute pancreatitis, while avoiding the use of<br />
iodinated contrast medium and radiation, and with<br />
the ability to identify bile duct stones more<br />
accurately than CT. 21<br />
S-MRCP should be considered as the first-choice<br />
procedure in the diagnostic algorithm of ARP (see<br />
Figure 3), because its diagnostic accuracy in detecting<br />
the various aetiological lesions of ARP is similar to<br />
that of ERCP without carrying the risk of potential<br />
ERCP-related complications. This initial work-up<br />
during an attack of pancreatitis detects the causes of<br />
ARP in about 70% of cases. 2<br />
Further Evaluation Procedures<br />
If the initial work-up following an attack of<br />
pancreatitis is negative and successive attacks occur,<br />
or if the first episode of pancreatitis is moderate to<br />
severe or occurs after the age of 40 years of age, a<br />
more extensive evaluation will reveal a diagnosis in<br />
around two-thirds of this group of patients. 2<br />
Advanced laboratory analysis may include genetic<br />
testing in patients younger than 40 years of age,<br />
tumour markers (carbohydrate antigen (CA) 19–9)<br />
in patients older than 40 years of age with a positive<br />
family history or with tobacco use, and serological<br />
markers of autoimmune pancreatitis if imaging<br />
studies are compatible with this diagnosis.<br />
As an additional diagnostic procedure, endoscopic<br />
ultrasonography (EUS) is able to postulate a cause for<br />
pancreatitis in approximately one-third of the<br />
patients with ARP for whom conventional<br />
evaluation, including transabdominal U/S and<br />
pancreatic CT with contrast injection, is negative. 22<br />
Due to its complication rate being lower than that of<br />
ERCP, EUS should be performed earlier in the<br />
BUSINESS BRIEFING: EUROPEAN GASTROENTEROLOGY REVIEW 2005
Figure 3: Recommended Algorithm for the Diagnostic Management of ARP<br />
diagnostic algorithm of ARP, where no evident<br />
cause is identified after initial evaluation procedures.<br />
ERCP may be indicated for diagnostic purpose in<br />
the few patients who suffer two or more attacks of<br />
acute pancreatitis in whom the aetiology of ARP<br />
cannot be achieved using high-quality S-MRCP<br />
and EUS. The aim of diagnostic ERCP is to<br />
perform ancillary procedures that may improve the<br />
diagnostic accuracy, such as brush cytology or<br />
biopsy in suspected neoplasm, minor papilla<br />
cannulation in suspected PD to clearly demonstrate<br />
a santorinicele (defined as focal cystic dilation of the<br />
termination of the dorsal pancreatic duct at the<br />
minor papilla), 23 sphincter of Oddi manometry in<br />
suspected SOD or collection of bile in suspected<br />
occult biliary stones. 7,24 However, ERCP is<br />
associated with a 3% to 5% complication rate, which<br />
is much higher in patients with a history of<br />
pancreatitis and may rise to 30% in cases with<br />
suspected SOD. 25 Nowadays, sphincter of Oddi<br />
manometry tends to be replaced by the non-invasive<br />
S-MRCP, 26 providing information regarding the<br />
morphology of the pancreatic gland, the dynamics of<br />
the emptying of the main pancreatic duct and the<br />
functional status of the exocrine pancreas through<br />
assessment of the duodenal filling after secretin<br />
administration. Therefore, ERCP has evolved from<br />
a diagnostic procedure to an almost exclusively<br />
therapeutic procedure for the treatment of<br />
<strong>Acute</strong> <strong>Relapsing</strong> <strong>Pancreatitis</strong><br />
ARP = acute relapsing pancreatitis; Lab = laboratory data; U/S = abdominal ultrasound; CT = computed tomography; S-MRCP = secretin-enhanced magnetic resonance cholangio-pancreatography; EUS = endoscopic<br />
ultrasonography; MRC = magnetic resonance cholangiography; BD = bile duct; ERCP = endoscopic retrograde cholangio-pancreatography; APBU = anomalous pancreaticobiliary union; CP = chronic pancreatitis;<br />
SOD = sphincter of Oddi dysfunction; SOM = sphincter of Oddi manometry; IPMT = intraductal papillary mucinous tumor; FNA = fine needle aspiration; PD = pancreas divisum.<br />
This figure is based on a review of current literature and on the author’s personal experience.<br />
abnormalities found by less invasive imaging<br />
techniques such as S-MRCP and EUS. 27<br />
Management<br />
BUSINESS BRIEFING: EUROPEAN GASTROENTEROLOGY REVIEW 2005<br />
{<br />
After a negative initial evaluation in patients younger<br />
than 40 years of age with only one mild episode of<br />
unexplained acute pancreatitis, expectant approach<br />
and no further testing is an acceptable management<br />
strategy, because the medium-term recurrence rate is<br />
believed to be low and the incidence of malignant<br />
neoplasm is low in patients with no family history of<br />
pancreatic cancer and no use of tobacco. 28,29<br />
However, in patients older than 40 years of age, with<br />
more than one attack of acute pancreatitis or when<br />
the initial attack is severe, a systematic identification<br />
and/or elimination of correctable inciting factors is<br />
required (see Figure 3). 4<br />
Occult biliary stones can be demonstrated using<br />
repeated U/S (for the gallbladder) or EUS (for the<br />
common bile duct) and treated using endoscopic<br />
biliary sphincterotomy (EBS) and laparoscopic<br />
cholecystectomy if the gallbladder is in situ.<br />
Early ERCP and EBS are safe and beneficial,<br />
particularly in severe biliary pancreatitis and when<br />
there is evidence of bile duct obstruction or<br />
cholangitis (see Figure 4). 30<br />
4
5<br />
Reference Section<br />
Figure 4: Potential Treatment Strategies According to the Most Probable Cause of <strong>Acute</strong> <strong>Relapsing</strong> <strong>Pancreatitis</strong><br />
ARP = acute relapsing pancreatitis; ERCP = endoscopic retrograde cholangio-pancreatography; EBS = endoscopic biliary sphincterotomy; EUS = endoscopic ultrasonography; MRC = magnetic resonance<br />
cholangiography; BD = bile duct; UDCA = ursodeoxycholic acid; MPD = main pancreatic duct; APBU = anomalous pancreaticobiliary union; CP = chronic pancreatitis; EPS = endoscopic pancreatic sphincterotomy;<br />
SOD = sphincter of Oddi dysfunction; ES = endoscopic sphincterotomy; PD = pancreas divisum; S-MRCP = secretin-enhanced magnetic resonance cholangio-pancreatography.<br />
This figure is based on a review of current literature and on the author’s personal experience.<br />
Empiric administration of a low-fat diet and oral<br />
therapy with ursodeoxycholic acid (UDCA) have<br />
been proposed for patients with suspected biliary<br />
microlithiasis or sludge before proceeding to more<br />
technically demanding investigations in high-risk<br />
patients or patients already cholecystectomised or<br />
unfit for cholecystectomy. 6,8<br />
At present, bile analysis and sphincter of Oddi<br />
manometry are less often performed, because these<br />
tests are invasive, insensitive and only available at<br />
tertiary institutions. 11,24 Available data suggest that,<br />
in suspected pancreatic SOD (on the basis of either<br />
a basal dilation of the main pancreatic duct or an<br />
abnormal dynamic response of the pancreatic duct<br />
at S-MRCP), a dual endoscopic biliary and<br />
pancreatic sphincterotomy, whether at single or<br />
separate sessions, yields significantly better response<br />
than EBS alone. 8,11<br />
However, the risk of post-sphincterotomy<br />
pancreatitis is five times higher for this indication<br />
than for other indications. 31 Placement of a transient<br />
pancreatic stent might reduce this risk when the<br />
accessory duct is not patent. 32 This stent usually<br />
migrates spontaneously, but in case migration does<br />
not occur, it should be removed for 10 to 14 days<br />
following dual endoscopic sphincterotomy.<br />
The selection of patients for treatment of ARP<br />
associated with PD is difficult, because there is<br />
currently no diagnostic modality that identifies<br />
patients who may benefit from dorsal pancreatic<br />
duct decompression. 13<br />
S-MRCP could be indicative of true or relative<br />
stenosis of the minor papilla if prolonged dilation<br />
of the main pancreatic duct is observed after<br />
secretin administration. 15<br />
Endoscopic therapy for patients with ARP<br />
associated with PD consists of minor papilla<br />
sphincterotomy, stent insertion or a combination of<br />
both. 33 The majority of therapeutic trials are small<br />
retrospective case series with only one randomised<br />
controlled trial on 19 patients showing a clinical<br />
benefit after dorsal duct stenting at a mean followup<br />
of 24 months. 34 Prolonged stenting of the dorsal<br />
main pancreatic duct should be avoided because of<br />
the risk of inducing pancreatic damage, mainly<br />
when the ductal morphology is initially normal. 35<br />
Therefore, it is recommended that a stent is placed<br />
after minor papilla sphincterotomy to prevent early<br />
obstruction secondary to oedema and early<br />
restenosis, but that the stent is removed in two to<br />
four weeks if it has not migrated spontaneously into<br />
the duodenal lumen. 35<br />
BUSINESS BRIEFING: EUROPEAN GASTROENTEROLOGY REVIEW 2005
In conclusion, ARP should be evaluated in specialist<br />
referral centres as diagnosis is time-consuming,<br />
usually expensive and may expose the patient to a<br />
substantial morbidity. Future prospective clinical<br />
trials should define which patients with idiopathic<br />
ARP (whether or not it is associated with<br />
References<br />
BUSINESS BRIEFING: EUROPEAN GASTROENTEROLOGY REVIEW 2005<br />
<strong>Acute</strong> <strong>Relapsing</strong> <strong>Pancreatitis</strong><br />
anatomical variants) are most likely to benefit from<br />
endoscopic intervention. These studies should allow<br />
appropriate patient selection and the development<br />
of novel, effective, preventive and therapeutic<br />
strategies to improve the clinical condition of<br />
these patients. ■<br />
1. Andersson R, Andersson B, Haraldsen P, Drewsen G, Eckerwall G, “Incidence, management and recurrence rate of acute<br />
pancreatitis”, Scand. J. Gastroenterol. (2004);39: pp. 891–894.<br />
2. Khalid A, Slivka A, “Approach to idiopathic recurrent pancreatitis”, Gastrointest. Endoscopy Clin. N. Am.<br />
(2003);13: pp. 695–716.<br />
3. Tarnasky P R, Hawes R H, “Endoscopic diagnosis and therapy of unexplained (idiopathic) acute pancreatitis”,<br />
Gastrointest. Endoscopy Clin. N. Am. (1998);8: pp. 13–37.<br />
4. Somogyi L, Martin S P, Venkatesan T, Ulrich II C D, “Recurrent acute pancreatitis: an algorithmic approach to<br />
identification and elimination of inciting factors”, <strong>Gastroenterology</strong> (2001);120: pp. 708–717.<br />
5. Bank S, Indaram A, “Causes of acute and recurrent pancreatitis. Clinical considerations and clues to diagnosis”,<br />
Gastroenterol. Clin. N. Am. (1999);28: pp. 572–589.<br />
6. Testoni P A, Caporuscio S, Bagnolo F, Lella F, “Idiopathic recurrent pancreatitis: long-term results after ERCP, endoscopic<br />
sphincterotomy, or ursodeoxycholic acid treatment”, Am. J. Gastroenterol. (2000);95: pp. 1,702–1,707.<br />
7. Lee S P, Nicholls J F, Park H Z, “Biliary sludge as a cause of acute pancreatitis”, N. Engl. J. Med. (1992);326: pp.<br />
589–593.<br />
8. Levy M J, Geenen J E, “Idiopathic acute recurrent pancreatitis”, Am. J. Gastroenterol. (2001);96: pp. 2,540–2,555.<br />
9. Chen J W C, Saccone G T P, Toouli J, “Sphincter of Oddi dysfunction and acute pancreatitis”, Gut (1998);43: pp.<br />
305–308.<br />
10. Hogan W J, Sherman S, Pasricha P, Carr-Locke D L, “Sphincter of Oddi manometry”, Gastrointest. Endosc.<br />
(1997);45: pp. 342–348.<br />
11. Petersen B T, “Sphincter of Oddi dysfunction, part 2: evidence-based review of the presentations with ‘objective’ pancreatic<br />
findings (types I and II) and of presumptive type III”, Gastrointest. Endosc. (2004);59: pp. 670–687.<br />
12. Delhaye M, Engelholm L, Cremer M, “Pancreas divisum: congenital anatomic variant or anomaly? Contribution of<br />
endoscopic retrograde dorsal pancreatography”, <strong>Gastroenterology</strong> (1985);89: pp. 951–958.<br />
13. Klein S D, Affronti J P, “Pancreas divisum, an evidence-based review: part I, pathophysiology”, Gastrointest. Endosc.<br />
(2004);60: pp. 419–425.<br />
14. Cotton P B, “Congenital anomaly of pancreas divisum as cause of obstructive pain and pancreatitis”, Gut (1980);21: pp.<br />
105–114.<br />
15. Matos C, Metens T, Devière J, Delhaye M, Le Moine O, Cremer M, “Pancreas divisum: evaluation with secretinenhanced<br />
magnetic resonance cholangiopancreatography”, Gastrointest. Endosc. (2001),53: pp. 728–733.<br />
16. Delhaye M, Engelholm L, Cremer M, “Pancreas divisum: controversial clinical significance”, Dig. Dis. (1988);6: pp.<br />
30–39.<br />
17. Matos C, Metens T, Devière J, Nicaise N, Braudé P, Van Yperen G, Cremer M, Struyven J, “Pancreatic duct:<br />
morphologic and functional evaluation with dynamic MR pancreatography after secretin stimulation”, Radiology<br />
(1997);203: pp. 435–441.<br />
18. Delhaye M, Matos C, Devière J, “<strong>Acute</strong> relapsing pancreatitis. Congenital variants: diagnosis, treatment, outcomes”, J.<br />
Pancreas (2001);2: pp. 373–381.<br />
19. Farrell J J, Brugge W R, “Intraductal papillary mucinous tumor of the pancreas”, Gastrointest. Endosc. (2002);55: pp.<br />
701–714.<br />
20. Coyle W J, Pineau B C, Tarnasky P R, Knapple W L, Aabakken L, Hoffman B J, Cunningham J T, Hawes R H,<br />
Cotton P B, “Evaluation of unexplained acute and acute recurrent pancreatitis using endoscopic retrograde<br />
cholangiopancreatography, sphincter of Oddi manometry and endoscopic ultrasound”, Endoscopy (2002);34: pp. 617–623.<br />
21. Arvanitakis M, Delhaye M, De Maertelaere V, Bali M, Winant C, Coppens E, Jeanmart J, Zalcman M, Van Gansbeke<br />
D, Devière J, Matos C, “Computed tomography and magnetic resonance imaging in the assessment of acute pancreatitis”,<br />
<strong>Gastroenterology</strong> (2004);126: pp. 715–723.<br />
22. Yusoff I F, Raymond G, Sahai A V, “A prospective comparison of the yield of EUS in primary vs. recurrent idiopathic<br />
acute pancreatitis”, Gastrointest. Endosc. (2004);60: pp. 673–678.<br />
23. Costamagna G, Ingrosso M, Tringali A, Multignani M, Manfredi R, “Santorinicele and recurrent acute pancreatitis in<br />
pancreas divisum: diagnosis with dynamic secretin-stimulated magnetic resonance cholangiopancreatography and endoscopic<br />
treatment”, Gastrointest. Endosc. (2000);52: pp. 262–267.<br />
6
7<br />
Reference Section<br />
24. Kaw M, Brodmerkel G J, “ERCP, biliary crystal analysis, and sphincter of Oddi manometry in idiopathic recurrent<br />
pancreatitis”, Gastrointest. Endosc. (2002);55: pp. 157–162.<br />
25. ASGE guideline, “Complications of ERCP”, Gastrointest. Endosc. (2003);57: pp. 633–638.<br />
26. Mariani A, Curioni S, Zanello A, Passaretti S, Masci E, Rossi M, Del Maschio A, Testoni P A, “Secretin MRCP and<br />
endoscopic pancreatic manometry in the evaluation of sphincter of Oddi function: a comparative pilot study in patients with<br />
idiopathic recurrent pancreatitis”, Gastrointest. Endosc. (2003);58: pp. 847–852.<br />
27. ASGE guideline, “The role of ERCP in diseases of the biliary tract and the pancreas”, Gastrointest. Endosc. (2005);62:<br />
pp. 1–8.<br />
28. Ballinger A B, Barnes E, Alstead E M, Fairclough P D, “Is intervention necessary after a first episode of acute idiopathic<br />
pancreatitis?”, Gut (1996);38: pp. 293–295.<br />
29. Draganov P, Forsmark C E, “‘Idiopathic’ pancreatitis”, <strong>Gastroenterology</strong> (2005);128: pp. 756–763.<br />
30. Sharma V, Howden C, “Meta-analysis of randomised controlled trials of endoscopic retrograde cholangiopancreatography and<br />
endoscopic sphincterotomy for the treatment of acute biliary pancreatitis”, Am. J. Gastroenterol. (1999);94: pp.<br />
3,211–3,214.<br />
31. Freeman M L, Nelson D B, Sherman S, Haber G B, Herman M E, Dorsher P J, Moore J P, Fennerty M B, Ryan M<br />
E, Shaw M J, Lande J D, Pheley A M, “Complications of endoscopic biliary sphincterotomy”, N. Engl. J. Med.<br />
(1996);335: pp. 909–918.<br />
32. Tarnasky P R, Palesch Y Y, Cunningham J T, Mauldin P D, Cotton P B, Hawes R H, “Pancreatic stenting prevents<br />
pancreatitis after biliary sphincterotomy in patients with sphincter of Oddi dysfunction”, <strong>Gastroenterology</strong> (1998);115:<br />
pp. 1,518–1,524.<br />
33. Cohen S A, Siegel J H, “Pancreas divisum. Endoscopic therapy”, Surg. Clin. N. Am. (2001);81: pp. 467–477.<br />
34. Lans J I, Geenen J E, Johanson J F, Hogan W J, “Endoscopic therapy in patients with pancreas divisum and acute<br />
pancreatitis: a prospective, randomized, controlled clinical trial”, Gastrointest. Endosc. (1992);38: pp. 430–434.<br />
35. Gerke H, Byrne M F, Stiffler H L, Obando J V, Mitchell R M, Jowell P S, Branch M S, Baillie J, “Outcome of<br />
endoscopic minor papillotomy in patients with symptomatic pancreas divisum”, J. Pancreas (2004);5: pp. 122–131.<br />
BUSINESS BRIEFING: EUROPEAN GASTROENTEROLOGY REVIEW 2005