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Endoscopic duodenal perforation: surgical strategies in a regional centre

Richard C Turner1*, Christina M Steffen2 and Peter Boyd2

Author Affiliations

1 Department of Surgery, Hobart Clinical School, University of Tasmania, Hobart, Australia

2 Department of Surgery, Cairns Base Hospital, Cairns & Hinterland Health Service District, Cairns, Australia

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World Journal of Emergency Surgery 2014, 9:11  doi:10.1186/1749-7922-9-11

The electronic version of this article is the complete one and can be found online at: http://www.wjes.org/content/9/1/11


Received:30 June 2013
Accepted:19 January 2014
Published:24 January 2014

© 2014 Turner et al.; licensee BioMed Central Ltd.

This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background

Duodenal perforation is an uncommon complication of endoscopic retrograde cholangio-pancreatography (ERCP) and a rare complication of upper gastrointestinal endoscopy. Most are minor perforations that settle with conservative management. A few perforations however result in life-threatening retroperitoneal necrosis and require surgical intervention. There is a relative paucity of references specifically describing the surgical interventions required for this eventuality.

Methods

Five cases of iatrogenic duodenal perforation were ascertained between 2002 and 2007 at Cairns Base Hospital. Clinical features were analyzed and compared, with reference to a review of ERCP at that institution for the years 2005/2006.

Results

One patient recovered with conservative management. Of the other four, one died after initial laparotomy. The other three survived, undergoing multiple procedures and long inpatient stays.

Conclusions

Iatrogenic duodenal perforation with retroperitoneal necrosis is an uncommon complication of endoscopy, but when it does occur it is potentially life-threatening. Early recognition may lead to a better outcome through earlier intervention, although a protracted course with multiple procedures should be anticipated. A number of surgical techniques may need to be employed according to the individual circumstances of the case.

Keywords:
Duodenum; Perforation; Endoscopy; Surgery; Necrosis

Background

Duodenal perforation is an uncommon complication of endoscopic retrograde cholangiopancreatography (ERCP) and a very rare complication of upper gastrointestinal endoscopy. Most series report a majority of non-life-threatening perforations which settle with conservative management [1,2]. There are few references specifically describing the surgical interventions required for the minority of iatrogenic duodenal perforations where surgery is indicated.

Five cases of iatrogenic duodenal perforation occurring between 2002 and 2007 at Cairns Base Hospital are presented for comparison, with reference to a review of ERCP at Cairns Base Hospital for the years 2005/2006. Further, a focused review of the literature was undertaken to inform discussion of the surgical management of such cases.

Methods

Cairns Base Hospital is a secondary referral hospital in Far North Queensland, Australia. It serves a catchment population of approximately 250 000, 15% of which identify as Indigenous Australian. Hospital surgical audit and endoscopy records for the period 2002–2008 were searched for cases of duodenal perforation following endoscopy or ERCP. Age, sex, indication for endoscopy/ERCP, timing or delay to diagnosis and definitive management, type of perforation, surgical management, complications, length of stay, and late morbidity were recorded for each case.

An audit of ERCP at Cairns Base Hospital for the two year period 2005/2006 was utilized to determine incidence of complications of ERCP and is presented in Tables 1 and 2.

Table 1. Complications of ERCP procedures for 2005–6 at Cairns Base Hospital (N = 211)

Table 2. Indications for ERCP 2005–06, Cairns Base Hospital (N = 202)

For the focused literature review, a PubMed search was undertaken using the terms “duodenal perforation”, “endoscopic” and “retroperitoneal necrosis”. Case-based articles cited by reviews were secondarily sourced. Articles with English language abstracts were considered, and excluded if endoscopy was not the cause of the perforation (rather a treatment) or if specific operative details were not reported. Similarly, only cases that underwent some form of surgical management were included.

Approval to access and analyze de-identified patient records for this study was given by the Human Research Ethics Committee of the Cairns and Hinterland Health Service District.

Results

Five patients sustaining iatrogenic duodenal perforation were identified. The clinical data pertaining to these are presented in Table 3. All four of the ERCP cases had an associated pre-cut sphincterotomy. No significant bleeding was noted, and no additional procedures such as lithotripsy or stenting were performed. In two cases, there was no specific evidence of choledocholithiasis, with the ERCP being intended solely for diagnostic purposes. Figure 1 shows a representative CT image from Case 2 prior to surgical intervention. Figure 2 illustrates the necrotic retroperitoneal material debrided via a right flank incision in Case 1.

Table 3. Characteristics of endoscopically induced duodenal injuries, Cairns Base Hospital, 2002–2008

thumbnailFigure 1. CT image showing extensive retroperitoneal necrosis prior to surgical intervention (Case 2).

thumbnailFigure 2. Necrotic retroperitoneal tissue debrided via right flank incision (Case 1).

In cases 1, 2 and 4, the actual duodenal perforation could not be identified at operation. This may have been due to a smaller size of the perforation and/or delay to surgery resulting in difficulty identifying the perforation. Ongoing leakage in Case 2 necessitated subsequent pyloric exclusion and gastrojejunostomy. Case 5, where endoscopy alone was performed, is likely to have perforated through a duodenal diverticulum, which is a known risk factor for perforation both in endoscopy and ERCP [4-6]. This large perforation was obvious at the time and early operation enabled definitive repair. As integrity of the repair was demonstrated radiologically, the subsequent delayed extensive retroperitoneal necrosis presumably arose from the leakage that occurred in the few hours between injury and laparotomy for repair.

Timing of intervention was assisted by serial computerized tomography examination. In the four cases treated surgically, definitive intervention consisted of open surgical drainage with or without subsequent CT-guided percutaneous drainage of amenable collections. While open surgical drainage was immediately effective in all cases, percutaneous drainage as an initial intervention was not effective in Case 1, attributable to the large volumes of semi-solid necrotic material in the retroperitoneum of this patient. This is consistent with experience in pancreatic necrosectomy [7,8]. In contrast, percutaneous drainage was an effective modality for the smaller, less accessible but more fluid presacral collection in Case 5.

Retroperitoneal necrosis was progressive and in most cases multiple operations were required due to ongoing symptoms. An oblique right flank to right iliac fossa incision was performed in Cases 1 and 5 giving good access to the upper and lower right retroperitoneal space and to the presacral space. A feature of the three cases in males was involvement of the right inguinoscrotal tract, with Cases 2 and 5 requiring separate drainage of symptomatic inguinoscrotal collections. None had pre-existing hernias.

One patient (Case 4) died indirectly as a result of the perforation, from sepsis associated with vascular access. This patient had significant co-morbidities, being steroid-dependent for pulmonary interstitial fibrosis and rheumatoid arthritis. Of the four survivors, one recovered quickly with conservative management alone, but the other three endured long hospital stays, underwent multiple surgical and other procedures, and developed short-term and long-term complications as a result of the original perforation and its treatment.

Discussion

All cases in this series were managed by General Surgeons at a regional hospital, serving a population of 250 000 and geographically remote from larger facilities. The endoscopic procedures were performed by a Gastroenterologist and a General Surgeon, both of whom were formally trained and accredited in these skills. As upper endoscopy and now ERCP are readily available in larger regional centres, an awareness of this serious but fortunately rare complication and its clinical course is useful for General Surgeons faced with its management. Certainly Case 5, undertaken with the benefit of specific experience gained in the management of Case 1, does seem to have had a better quality outcome, with shorter length of stay, fewer procedures, and fewer complications.

While duodenal perforation at endoscopy alone is extremely rare, the rate during ERCP is significantly higher, estimated to be between 0.4 and 1% [9]. The rate of 0.95% in the audited series from Cairns Base Hospital is within these limits (Table 1). The indications for ERCP at our institution are shown in Table 2. It should be noted that two patients in the series had the uncommon indication of post-cholecystectomy pain. During the time period of this series, no other imaging modalities for the common bile duct were readily available. Despite the excellent standards set for training and quality assurance, ERCP, particularly when associated with sphincterotomy, still incurs a definite risk of complication, and its indications should be primarily interventional [10]. The emerging availability in regional centres of less invasive diagnostic modalities such as MRCP and endoscopic ultrasound (EUS) should reduce exposure to the risk of duodenal perforation in this group, [11,12] as has indeed been the case at our institution since 2007. Where these are not available, consideration should be given to transferring patients to centres where they are, particularly when there is no therapeutic intent at the outset.

Four types of duodenal perforation have been described – Type 1: lateral duodenal wall, Type 2: peri-Vaterian duodenum, Type 3: bile duct, and Type 4: tiny retroperitoneal perforations caused by the use of compressed air during endoscopy. Most perforations are Type 2, due to concomitant endoscopic sphincterotomy, and may be suitable for a trial of conservative management [13-15]. In our series, Case 3 was documented as a Type 2 perforation. Case 5 was documented as a Type 1 perforation, and Cases 1, 2, 4 were most likely this, based on the ensuing clinical course. Type 1 perforations have the most serious consequences and typically require complex and invasive treatment. They are mostly caused by the endoscope itself and may result in considerable intra- or extraperitoneal spillage of duodenal fluid (a mixture of gastric juice, bile and pancreatic juice), the latter causing rapid, extensive, and ongoing necrosis of the right retroperitoneum. The patient becomes intensely catabolic with fevers, raised inflammatory markers, leucocytosis, and nutritional depletion. Without surgical intervention death is likely from a combination of massive auto-digestion, nutritional depletion and sepsis. Delay in diagnosis increases the likelihood of a fatal outcome [16,17].

Various management algorithms for duodenal injuries have been proposed, largely focusing on early diagnosis and the decision for surgical management [18-21]. Indications for surgery have been well described. If a Type 1 injury is noted at endoscopy or on subsequent imaging (eg. extravasation of contrast), immediate operative intervention is generally mandated. Failure of conservative management due to signs of progressive systemic inflammatory response syndrome (SIRS) is a relative indication for operation. Guidelines for specific operative strategies in the face of ERCP-related duodenal injury and retroperitoneal necrosis have been proposed, but are often based on evidence derived from individual case reports or case series, or from experience in the trauma setting [22,23]. Due to its uncommon nature, prospective comparative studies to determine the optimal procedure for endoscopically induced duodenal perforation have yet to be published [24].

Published case series and reports regarding possible surgical management options for endoscopically induced Type 1 and 2 duodenal injuries are summarized in Table 4[13,18,19,21,25-34]. In general, operative procedures are tailored to conditions encountered at the time of laparotomy, as well as to any underlying pathology that preceded or was the indication for the endoscopic procedure. Primary repair of a breach in the duodenal wall may be possible where the injury is diagnosed early and there is limited contamination of surrounding tissues. Kocherization is usually needed to facilitate this, along with debridement of any devitalized tissue. Additional operative variations worthy of consideration include repair in one or two layers, transverse or longitudinal closure, and augmentation with a jejunal serosal [35] or omental patch. For patients deemed to be at high risk for leak or fistula formation, a number of additional protective measures have been proposed [24,36]. Tube decompression involves placement of a trans-mural trans-parietal duodenostomy or jejunostomy tube [37]. There are concerns that this engenders additional trauma to the gastrointestinal tract and may not provide adequate decompression. Duodenal diverticulation is a complex procedure that involves duodenal repair, distal Billroth II gastrectomy, placement of a decompressive duodenostomy tube, and peri-duodenal drainage [38]. This is obviously time-consuming and is often inappropriate for haemodynamically unstable patients. A less onerous procedure is pyloric exclusion, which entails primary duodenal repair, pyloric suture or stapling via greater curvature gastrotomy, and gastrojejunostomy using the gastrotomy incision [39]. In certain circumstances, it may be suitable to perform a duodenojejunostomy, preferably with Roux-en-Y reconstruction [40]. Such a maneuver would obviously be predicated on a stable patient and a duodenum wall that is amenable to sutures. It is clear that the General Surgeon must have a variety of techniques in his/her repertoire in order to adapt to the situation at hand.

Table 4. Reports in the literature of Type 1 and 2 duodenal injuries caused by endoscopic procedures

The other important issue to contend with in duodenal injuries is the management of retroperitoneal necrosis or sepsis. In most cases where laparotomy is performed, some degree of debridement and placement of drains is undertaken. This may be all that can be done if primary duodenal repair is not feasible, or the perforation cannot be localized amid the devitalized tissue. As illustrated by our own case series, repeated drainage procedures are often necessary if signs of recurrent sepsis develop. As has been noted by other authors, [41] males are also at risk of developing sepsis of the inguinoscrotal tract. Percutaneous drainage of any recurrent collections may be attempted using radiological guidance, unless the semi-solid nature of the debris necessitates an open approach. The technique of video-assisted retroperitoneal debridement, [42] as validated for infected necrotizing pancreatitis, may be of use, but there have been no reports of its application in this context.

Conclusion

Retroperitoneal necrosis due to duodenal perforation is a rare but serious complication of ERCP. Early recognition based on risk factors and clinical suspicion may lead to a better outcome, although a protracted course with multiple and various types of procedures should be anticipated. Urgent interventions typically involve debridement and drainage, duodenal repair where feasible, and if indicated, duodenal diversion or other protective procedures. Familiarity with a number of possible surgical strategies is desirable due to the need to adapt to individual circumstances. Surgical management plans should also take into account any underlying pathology that was the initial indication for the endoscopic procedure, although definitive procedures may not be feasible at first operation. The use of ERCP for purely diagnostic purposes should only be considered where less invasive imaging modalities are not possible.

Abbreviations

CBD: Common bile duct; CVL: Central venous line; CT: Computerized tomography; ERCP: Endoscopic retrograde cholangiopancreatography; EUS: Endoscopic ultrasound; LFTs: Liver function tests; MRCP: Magnetic resonance cholangiopancreatography; SIRS: Systemic inflammatory response syndrome; UTI: Urinary tract infection.

Competing interests

The authors declare that they have no competing interests.

Authors’ contributions

RT contributed clinical cases to the series, co-wrote the manuscript and attended to reviewer comments. CS contributed clinical cases to the series and co-wrote the manuscript. PB provided the summary data of institutional endoscopy outcomes and edited the first draft of the manuscript. All authors read and approved the final manuscript.

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