Journal List > Korean J Gastroenterol > v.54(6) > 1006606

Jeong, Shin, Kim, Kim, Kim, Lee, Jeon, and Lee: The Safety Assessment of Percutaneous Transhepatic Transpapillary Stent Insertion in Malignant Obstructive Jaundice: Regarding the Risk of Pancreatitis and the Effect of Preliminary Endoscopic Sphincterotomy

Abstract

Background/Aims

Metal stent insertion through percutaneous transhepatic biliary drainage (PTBD) track is an important palliative treatment modality for malignant biliary obstruction. Acute pancreatitis is one of serious complications of biliary metal stenting. The purpose of this study was to investigate the risk of pancreatitis for patients who underwent metal stent insertion via PTBD track.

Methods

A retrospective analysis of 90 consecutive patients who received metal stent insertion via PTBD track from Jan. 2002 to Dec. 2007 was carried out. Patients were devided into the transpapillary and non-transpapillary group, and the risks of pancreatitis were compared. The effects of preliminary endoscopic sphincterectomy (EST) was also investigated in transpapillary group.

Results

The rate of pancreatitis was higher in transpapillary group compared to nontranspapillary group (odd ratio 1.87, 95% CI 0.516-6.761), but it showed no stastically significance (p=0.502). In transpapillary group, patients who received preliminary EST showed lower rate of pancreatitis (odd ratio 0.91, 95% CI 0.656-1.273), but it showed no stastically significance (p=0.614).

Conclusions

Metallic stent insertion through the intact sphincter of Oddi might have a risk of developing pancreatitis. Further study is needed to elucidate the mechanism of pancreatitis and the way of prevention.

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Table 1.
Patient Characteristics
Transpapillary group (n=50) Non transpapillary group (n=40)
Age 68.8±11.5 71.6±8.3
Sex (M:F) 27:23 22:18
Diagnosis
Pancreatic cancer 18 3
Klatskin tumor 7 21
GB cancer 5 5
Distal CBD cancer 12 5
Ampullar of Vater cancer 4 0
Metastatic obstruction 4 6
Table 2.
Frequency of Pancreatitis and Changes of Amylase
Transpapillary group (n=50) Non-transpapillary group (n=40) p-value
Pancreatitis 7 (14%) 3 (7.5%) OR=1.867
0.502
Serum amylase (IUL)
Period 0 117.1±96.9 98.9±68.0 0.31
Period 1 192.9±413.5 106.9±91.7 0.20
Change 75.7±410.6 8.0±104.5 0.31
Table 3.
Changes of Amylase in Transpapillary Group according to Preliminary EST
Preliminary EST (n=10) Non preliminary EST (n=40) p-value
Pancreatitis 2 5 OR=0.914
0.614
Serum amylasse (IU/L)
Period 0 132.3±76.3 113.4±101.9 0.58
Peroid 1 141.8±95.7 205.5±460.3 0.66
Change 9.5±101.9 92.3±456.1 0.57

EST, endoscopic sphincterectomy.

Table 4.
Patient Characteristics in Pancreatitis (n=10)
Sex Age Transpapillar passage Diagnosis Hospital days Pancreatitis severity (Ranson's criteria) mortality risk (%)
Case 1 M 78 O Klatskin tumor 11 1%
Case 2 M 76 O Gastric cancer 19 15%
Case 3 F 66 O Klatsking tumor 18 1%
Case 4 F 65 O Pancreatic cancer 6 1%
Case 5 M 64 O Klatskin tumor 8 1%
Case 6 M 71 O Periampullary cancer 6 1%
Case 7 F 74 O Klatskin tumor 5 1%
Case 8 M 76 X GB cancer 14 1%
Case 9 F 77 X Gastric cancer 5 1%
Case 10 M 72 X GB cancer 11 1%
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