Case Report

Ileal Flap Duodenoplasty to Repair Large Duodenal Defects after R0 Resection for Malignant Tumor to Avoid a Complex Reconstruction: Experience with 6 Cases

Sami Hamed, TheophileGuilbaud, Jean Hardwigsen and Yves Patrice Le Treut
Department of Digestive Surgery and Liver Transplantation, Aix Marseille University, France


*Corresponding author: Yves Patrice Le Treut, Department of Digestive Surgery and Liver Transplantation, Aix Marseille University, APHM, Hôpital de la Timone, 264 rue St Pierre, 13005 Marseille, France


Published: 18 Sep, 2018
Cite this article as: Hamed S, Guilbaud T, Hardwigsen J, Le Treut YP. Ileal Flap Duodenoplasty to Repair Large Duodenal Defects after R0 Resection for Malignant Tumor to Avoid a Complex Reconstruction: Experience with 6 Cases. Clin Surg. 2018; 3: 2110.

Abstract

Locally advanced malignant abdominal tumors of the right upper quadrant, as in colonic carcinomas, can lead to a major resection of the duodenal sidewall to create free resection margins (R0 resection). There is no standard surgical technique to manage this duodenal defect. We report here our experience of a standardized duodenal reconstruction using an ileal flap. Following a right colectomy with a major duodenal resection, the duodenal defect was covered with a pedicledileal flap using the terminal ileum. This reconstruction is particularly suitable for performing a tensionfree ileo-transverse anastomosis. Duodenal leakage did not occur in our study. Our experience as well as a literature review shows that this technique is feasible and safe and is a reliable surgical approach that avoids the need for a radical pancreaticoduodenectomy or a non-anatomical by-pass.
Keywords: Locally advanced tumors; Large duodenal defect; Ileal flap


Introduction

Approximately 10 percent of colonic carcinomas are locally advanced due to the involvement of adjacent organs [1]. Free resection margins (R0 resection) of locally advanced colonic cancer at the hepatic flexure can lead to a major en-bloc resection of the second duodenal sidewall, raising the issue of duodenal repair. A similar situation may be encountered with other malignant tumors of the upper right quadrant, such as liver, gallbladder, duodenal or retroperitoneal tumors. In cases of duodenal and pancreatic spread, there is no curative solution other than a Pancreaticoduodenectomy (PD). However, when invasion is limited to the duodenal sidewall, there is no standard surgical procedure for reconstructing the large duodenal defect after partial duodenectomy. Ileal flap duodenoplasty seems to be a safe but relatively unknown surgical procedure. We report here our case study experiences and a review of the literature on this topic.


Operative Technique

Following a Right Colectomy (RC) extending to a large portion of the duodenum, the duodenal defect can be covered with an ileal flap using the last loop of the ileum. A segment of the terminal ileum is isolated with a large pedicle of mesentery (it is better not to use a vascular section) (Figure 1a). The length of the ileal segment is adjusted to the size of the defect. The segment is opened along the antimesenteric border and then is easily transposed to the duodenum (Figure 1a) and sutured in isoperistaltic fashion on the duodenal defect using a continuous absorbable running suture (Figure 1b). A sealing test can be performed with air insufflation using a gastric probe. This reconstruction is particularly suitable for performing a tension-free ileo-transverse end-to-side anastomosis without torsion of the mesentery (Figure 1c). A gastric tube or gastrostomy tube can then be placed for gastric discharge.


Figure 1

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Figure 1
Schematic representation of the procedure. A.Resection of the right colon with the duodenal sidewall resulted in a large duodenal defect. A segment of terminal ileum was isolated on a large vascular pedicle of mesentery, and the antimesenteric border of the lumen was opened. B. The duodenal defect was covered with the pedicledileal flap using a continuous running suture. C. An end-to-side anastomosis was done between the ileum and the mid-transverse colon.

Case Studies

We studied 6 cases with various kinds of tumors - adenocarcinoma of the right colon, gallbladder cancer, intrahepatic cholangiocarcinoma, and retroperitoneal sarcoma - macroscopically invading the sidewall of the first and/or second part of the duodenum (Table 1). Two cases have already been reported [2]. In all the cases, surgery allowed complete resection with safe margins (R0 resection) due to a major resection of the duodenal wall (duodenal defect measures 5 cm to 10 cm in length). In all the cases, we used an ileal flap to cover the duodenal defect. In one case that underwent a right hepatectomy extending to segment IV as well as bile duct confluence, a biliary-enteric anastomosis was done on the upstream end of the ileal segment, and the other end was used to cover the duodenal defect. An upper digestive tract X-ray series was done 7 days after surgery (Figure 2). Five patients had an uneventful course. One patient had a biloma in the bed of segmentectomy IV, which was treated with percutaneous drainage, and one patient died on day 25 from sepsis and hepatic failure without any sign of duodenal leakage.


Table 1

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Table 1
Patient characteristics.

Discussion

Our experience shows that this technique is feasible to achieve curative intent and is a safe and reliable surgical approach to avoid radical PD and non-anatomical bypass.
In the presence of locally advanced colonic cancer, an aggressive surgical approach can be effective and is associated with low morbidity-mortality and a high survival rate [1,3]. In the case of a right-sided colonic tumor, R0 resection extended “en bloc” to other organs, such as the abdominal wall, gallbladder, small intestine, kidney or ureter, can be safely performed. Regarding other duodenal tumors such as stromal tumors, safe surgical margins are feasible, with good survival rates. The severity of duodenal GIST appears to be linked to particularly high rate of mitosis [4]. When either the pancreas is involved or the duodenal invasion is massive, including the papilla of Vater, the consensus is that it is desirable to achieve an en bloc PD for curative intent. In contrast, when invasion is limited to the duodenal sidewall, there is no consensus if the duodenal defect does not allow for a simple closure. Several procedures can be used in this rare instance: a PD [5] or a duodenal resection followed by Rouxen- Y duodenojejunostomy [1], side-to-side duodenojejunostomy [6], and a jejunal [3] or ileal flap [7]. Gastric pedicle patches have also been described for duodenal stenosis [8].
A thorough literature review was conducted regarding locally advanced malignant tumors of the right upper quadrant invading the duodenum without pancreatic involvement. Cases of small resections that may be simply closed as well as studies that did not describe the surgical technique were not included (Table 2). Forty-seven patients were collected, including our 6 cases. Most of the cases were those of colonic cancer invading the duodenum (n=37); 4 cases were duodenal GIST (with colonic invasion in 2 cases) and 6 cases were other various diseases. Ileal flap was the most used technique (n=23), followed by PD (n=9), Roux-en-Y duodenojejunostomy (n=9), lateral duodenojejunostomy (n=3), and jejunal flap (n=3). Intraoperative complexity and a high risk of postoperative complications for enbloc RC plus PD often discourage surgeons from the procedure [9]. Thus, the ileal flap avoids PD, which involves increased risk of fistulas, especially when the pancreatic parenchyma is soft [9]. A duodenojejunostomy reconstruction can lead to difficulties in moving the jejunal loop closer to the duodenal defect in the case of a short mesentery, especially if an RC is not performed. Indeed, RC associated with duodenal resection allows for easier lifting of the ileal flap closer to the duodenal defect in anisoperistaltic fashion immediately upstream from the ileo-transverse anastomosis. In addition, the jejunal or ileal flap is the better anatomical solution because there is no bypass or risk of reflux. In our case review, no postoperative duodenal leakage was reported, and there was only one case of postoperative death. In our case studies, the main postoperative complication (bilioma, hepatic failure) were unrelated to duodenoplasty.
Regarding the long-term results, the choice between RC plus PD or RC with major duodenal resection remains unclear. In a recent review, the 5-year survival rate was 52% after en bloc RC plus PD vs. 25% and 0% in the cases of duodenal resection with correction by direct suture or pedicledileal flap, respectively [9]. However, this review included 10 cases of major duodenal resections only (vs. 38 in our review), and survival rates were grossly estimated by the ratio of patients living more than 5 years irrespective of shorter follow-ups. In the Kaplan Meir method based on the duration of survival specified for each patient in each report. No follow-up was done in 9 of the 37 cases of colonic carcinomas. Among the remaining patients, the 3-year survival rate of patients treated with RC with duodenal resection (n=20) was 75%. This rate was comparable to the 3-year survival rate of patients treated with RC plus DP (n=8, 70%). Regardless of the treatment options, a complete R0 tumor removal remains the primary prognostic factor [21]. In the case of exclusive duodenal invasion, this goal is easier to achieve if the extent of duodenal resection is not restricted by the underlying difficulties of the repair.


Table 2

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Table 2
Review of the literature: Observations of duodenal resection for tumoral invasion

Figure 2

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Figure 2
Postoperative day 7 upper gastrointestinal X-ray series. The arrow shows the pedicled ileal flap. The passage through the “new duodenum” was well maintained without stenosis or leakage.

Conclusion

Tumor invasion of the duodenum without pancreatic involvement is a rare and challenging condition. A radical approach is still possible by liberal resection of the lateral portion of the duodenum. Ileal flap duodenoplasty can then be ideally achieved with RC.


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