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V. Butano et al.
• We place four interrupted sutures between the pancreatic duct and the jejunot­omy, at four quadrants of the pancreatic duct in a 6-, 9-, 3-, and 12-o’clock order. The sutures are tied on the extra-luminal surface.
• A running 3-0 non-absorbable V-Loc™ suture is then used to form the anterior­outer layer between the pancreatic capsule and substance to the seromuscular layer of the jejunal limb, in a similar fashion as the posterior layer. The anterior and posterior outer-layer sutures are then tied together.
• A 10 Fr closed suction drain is placed near the proximal pancreatic stump and pancreaticojejunostomy. A nal check for hemostasis is performed and the abdomen is desufated. All port sites larger than 8mm are closed and the opera­tion is complete.

Discussion

Central pancreatectomy brings several advantages when compared to other standard pancreatic resection techniques (pancreatoduodenectomy and distal pancreatec­tomy), mainly attributed to the preservation of pancreatic parenchyma. These include a reduced incidence of postoperative exocrine and endocrine insufciency, as well as the avoidance of splenectomy-related complications [1013], while enabling excision of pancreatic body tumors otherwise could not have been safely excised via enucleation. The rst reported case of a laparoscopic CP was published by Baca and Bokan in 2003 for cystadenoma [14]. The rst robotic CP was reported by Giulianotti etal. from Misericordia Hospital in Grosseto a year later [15]. Since then, there have been only few reports on minimally invasive CP surgical techniques and clinical outcomes. In this chapter, we aim to describe surgical steps of central pancreatectomy and discuss important clinical aspects of this operation.
Relative to distal pancreatectomy, central pancreatectomy has higher rates of
overall and severe morbidity, overall and clinically relevant pancreatic stula, hem­orrhage, and longer length of stay, which limits its widespread application and adoption [2, 16]. Other complications may include issues related to the reconstruc­tion such as enteric leak, bowel obstruction, or internal hernia. The technical demand of ne suturing skills during the creation of pancreaticojejunostomy anastomosis further deters surgeons from undertaking laparoscopic CP. The advent of robotic surgical systems facilitates ne suturing, which ameliorates this technical issue; however, the availability of the robotic platform is still not universal currently.
In 2018, Xio etal. conducted a systematic review which included 50 studies and
1305 patients undergoing CP.The outcomes of these patients were compared with those undergoing distal pancreatectomy and pancreaticoduodenectomy. The overall morbidity, mortality, postoperative pancreatic stula, and reoperation rate was 51%,
0.5%, 35%, and 4%, respectively. Endocrine and exocrine insufciency occurred in
only 4% and 5% of patients, respectively [2]. Further subgroup meta-analysis of CP versus distal pancreatectomy favored CP with regard of blood loss and lower rate of postoperative endocrine insufciency (OR = 0.13, p < 0.001) and exocrine
28 Minimally Invasive Central Pancreatectomy
483
insufciency (OR=0.38, p<0.001); however, CP was associated with high pancre­atic leak rate. In comparison to pancreatoduodenectomy, CP also had a lower risk of postoperative endocrine (OR = 0.14, p < 0.001) and exocrine insufciency (OR=0.14, p<0.001), but higher pancreatic leak rate (OR=1.6, p=0.015). The authors concluded that CP maintains pancreatic endocrine and exocrine function better than distal pancreatectomy and pancreatoduodenectomy, but it is associated with a high pancreatic leak rate.
The most recent systematic review and meta-analysis published by Rompianesi
et al. includes 13 series and 265 patients undergoing robotic central pancreatec­tomy. In all cases but one, robotic CP was undertaken to excise benign or low-grade tumors. Clinically relevant postoperative pancreatic stula occurred in 42.3% of patients. The overall complications were 57.5%; however, only 9.4% were Clavien­Dindo 3 grades [17]. Despite the high rate of pancreatic stula, the incidence of new-onset diabetes mellitus after the CP was only 0.3% with negligible mortality. This nding was consistent with long-term endocrinologic benets of pancreatic parenchymal preservation offered by CP.
The conclusion is minimally invasive central pancreatectomy is safe and feasible
as an alternative option to distal pancreatectomy and pancreatoduodenectomy for benign or low malignant potential pancreatic neck/body tumors. The ultimate ben­et of CP is preservation of pancreatic endocrine and exocrine function, despite a higher incidence of postoperative pancreatic leak.
Acknowledgments Kaitlyn Crespo, BS; Cameron Syblis, BS; and Jacob Lambdin, MD for con­tributions of the images and preparation of the manuscript.

References

1. Dragomir MP, Sabo AA, Petrescu GED, Li Y, Dumitrascu T.Central pancreatectomy: a com­prehensive, up-to-date meta-analysis. Langenbecks Arch Surg. 2019;404(8):945–58.
2. Xiao W, Zhu J, Peng L, Hong L, Sun G, Li Y.The role of central pancreatectomy in pancreatic surgery: a systematic review and meta-analysis. HPB (Oxford). 2018;20:896–904. https://doi.
org/10.1016/j.hpb.2018.05.001.
3. Ambiru S, Kato A, Kimura F, Shimizu H, Yoshidome H, Otsuka M, et al. Poor postopera­tive blood glucose control increases surgical site infections after surgery for hepato-biliary­pancreatic cancer: a prospective study in a high-volume institute in Japan. J Hosp Infect. 2008;68(3):230–3.
4. Sadowski SM, Millo C, Cottle-Delisle C, Merkel R, Yang LA, Herscovitch P, etal. Results of (68)Gallium-DOTATATE PET/CT scanning in patients with multiple endocrine neoplasia type
1. J Am Coll Surg. 2015;221(2):509–17.
5. Werba G, Napolitano MA, Sparks AD, Lin PP, Johnson LB, Vaziri K.Impact of preoperative biliary drainage on 30 day outcomes of patients undergoing pancreaticoduodenectomy for malignancy. HPB (Oxford). 2022;24(4):478–88.
6. Ross S, Rayman S, Sucandy I, Syblis C, Rosemurgy A.Whipple’s operation and distal pan­createctomy. In: Costello T, editor. Principles and practice of robotic surgery. Philadelphia: Elsevier; 2024.
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7. Ross S, Rosemurgy A, Wecowski J, Bourdeau T, Sucandy I.Robotic pylorus-preserving pan­creaticoduodenectomy and cholecystectomy. In: Atlas of robotic general surgery. Elsevier;
2021. p.309–22.
8. Ross SB, Downs D, Sucandy I, Rosemurgy AS.Robotic pylorus-preserving pancreaticoduode­nectomy. In: Fong Y, Woo Y, Hyung W, Lau C, Strong V, editors. The SAGES atlas of robotic surgery. Cham: Springer; 2018. p.319–34.
9. Rosemurgy A, Ross S, Bourdeau T, Craigg D, Spence J, Alvior J, etal. Robotic pancreatico­duodenectomy is the future: here and now. J Am Coll Surg. 2019;228:613–24.
10. Crippa S, Bassi C, Warshaw AL, Falconi M, Partelli S, Thayer SP, Pederzoli P, Fernández-del Castillo C.Middle pancreatectomy: indications, short- and long-term operative outcomes. Ann Surg. 2007;246(1):69–76. https://doi.org/10.1097/01.sla.0000262790.51512.57.
11. Iacono C, Verlato G, Ruzzenente A, Campagnaro T, Bacchelli C, Valdegamberi A, Bortolasi L, Guglielmi A.Systematic review of central pancreatectomy and meta-analysis of central versus distal pancreatectomy. Br J Surg. 2013;100(7):873–85. https://doi.org/10.1002/bjs.9136.
12. Xu SB, Zhu YP, Zhou W, Xie K, Mou YP. Patients get more long-term benet from central pancreatectomy than distal resection: a meta-analysis. Eur J Surg Oncol. 2013;39(6):567–74.
https://doi.org/10.1016/j.ejso.2013.02.003. Epub 2013 Mar 7.
13. Santangelo M, Esposito A, Tammaro V, Calogero A, Criscitiello C, Roberti G, Candida M, Rupealta N, Pisani A, Carlomagno N.What indication, morbidity and mortality for central pancreatectomy in oncological surgery? A systematic review. Int J Surg. 2016;28(Suppl
1):S172–6. https://doi.org/10.1016/j.ijsu.2015.12.046. Epub 2015 Dec 18.
14. Baca I, Bokan I. Laparoskopische Pankreassegmentresektion bei Pankreaszystadenom [Laparoscopic segmental pancreas resection and pancreatic cystadenoma]. Chirurg. 2003;74(10):961–5. German. https://doi.org/10.1007/s00104- 003- 0690- y.
15. Giulianotti PC, Sbrana F, Bianco FM, Addeo P, Caravaglios G. Robot-assisted laparoscopic middle pancreatectomy. J Laparoendosc Adv Surg Tech A. 2010;20(2):135–9. https://doi.
org/10.1089/lap.2009.0296.
16. Rompianesi G, Montalti R, Giglio MC, Caruso E, Ceresa CD, Troisi RI. Robotic central pancreatectomy: a systematic review and meta-analysis. HPB (Oxford). 2022;24(2):143–51.
https://doi.org/10.1016/j.hpb.2021.09.014. Epub 2021 Sep 24.
17. Lv A, Qian HG, Qiu H, Wu JH, Hao CY. Is central pancreatectomy truly recommend­able? A 9-year single-center experience. Dig Surg. 2018;35(6):532–8. https://doi.
org/10.1159/000485806. Epub 2017 Dec 22.
V. Butano et al.
Chapter 29
Palliation ofPancreatic Cancer
ImadElkhatib andMarcMesleh
Key Points
• Increasing number of patients with pancreatic cancer will require palliation of
symptoms as more effective chemotherapeutic options became available.
• Endoscopically placed metal stents are the preferred method of palliating malig-
nant biliary obstruction.
• Biliary metal stents have varying durations of patency and will require varying
types of maintenance.
• Surgical gastrojejunostomy is an effective method of palliation.
• Palliation of duodenal obstruction via duodenal metal stent placement vs surgical
bypass based on the expected prognosis.
• Cancer-related abdominal pain most often responds to narcotics, but may be pal-
liated with EUS-guided celiac plexus neurolysis.

Introduction

Each year more than 62,000 patients in the United States develop cancer of the pancreas, and of these patients, only 11% are expected to survive 5years from diag­nosis [1]. Pancreatic cancer portends a poor prognosis regardless of stage, with an estimated 3–6-month survival for those patients presenting with metastatic disease and a 9–12-month survival for those with locally advanced, unresectable disease
I. Elkhatib Advanced/Therapeutic Endoscopy, Advocate Christ Medical Center, Oak Lawn, IL, USA
M. Mesleh ( Department of Surgery, University of Illinois Chicago (UIC), Chicago, IL, USA
Advocate Christ Medical Center, Oak Lawn, IL, USA e-mail: marc.mesleh@aah.org
Switzerland AG 2025 E. P. Ceppa et al. (eds.), The SAGES Manual of Evolving Techniques in Pancreatic Surgery, https://doi.org/10.1007/978-3-031-78409-5_29
*)
485© The Author(s), under exclusive license to Springer Nature
486
Table 29.1 Categories of cancer-related symptoms and endoscopic palliation options
Cancer-related problem Symptoms Role of endoscopic treatment

Biliary obstruction

Duodenal obstruction
Neural invasion – Abdominal
– Jaundice – Pruritis – Cholangitis
– Nausea/emesis – Anorexia – Esophagitis
pain
– Biliary stenting – EUS-guided
choledocoduodenostomy
– Endoluminal stenting – Venting PEG – EUS-guided
gastrojejunostomy
– Celiac plexus neurolysis – Celiac plexus block
I. Elkhatib and M. Mesleh
Role of surgical treatment
– Hepaticojejunostomy
– Gastrojejunostomy
[2]. Resection offers the only potential for cure, but even after pancreaticoduode­nectomy for curative intent, the 5-year survival remains low at 27%. Therefore, the management of many patients with pancreatic cancer will involve palliation of cancer- related symptoms. Due to patients surviving longer with newer chemother­apy and radiation treatments, the prevalence of these symptoms continues to increase. The role of palliative therapy is becoming increasingly important to offer an acceptable quality of life.
The approach to palliating cancer-related symptoms in patients with pancreatic cancer is a multidisciplinary one and involves the combination of medical oncolo­gists, radiation oncologists, surgical oncologists, interventional gastrointestinal endoscopists, interventional radiologists, pain management physicians, and medical palliative care teams. The focus of this chapter will be on the options for endoscopic and surgical techniques in palliation of cancer-related symptoms.
The most common cancer-related symptoms from pancreatic adenocarcinoma which requires intervention include biliary obstruction, duodenal obstruction, and pain from neural involvement of locally advanced disease (Table29.1). Deciding on the best intervention for each patient depends on several factors and should be dis­cussed in a multidisciplinary team.
Biliary Obstruction
Given the intra-pancreatic course of the common bile duct, biliary obstruction due to tumor invasion is the most common cancer-related complication of pancreatic cancer. In fact, given that 75–85% of new diagnoses of pancreatic cancer involve the head of the pancreas, up to 70% of patients will develop some degree of biliary obstruction, which is commonly symptomatic, causing jaundice and pruritus [3]. Severe biliary obstruction can lead to liver dysfunction and coagulopathy. This coagulopathy must be diagnosed and treated before invasive procedures can be safely performed.
29 Palliation ofPancreatic Cancer
While there are multiple pharmacologic options for the treatment of pruritis including hydroxyzine, diphenhydramine, benzodiazepines, cholestyramine, and ursodeoxycholic acid [4], these are seldom effective given the progressive obstruc­tive nature of the jaundice. Therefore, it is reserved for patients who are not able to receive endoscopic or surgical interventions.
487
Endoscopic Interventions
Endoscopic biliary stenting provides an effective means of palliating jaundice and pruritis due to malignant biliary obstruction from pancreatic cancer. It is the most common therapy for this indication. Biliary stenting can be performed via endo­scopic or percutaneous routes. There are mixed data regarding the benets of the endoscopic route as compared to the percutaneous route [57]. An early random­ized trial showed an 81% success rate of endoscopic decompression versus a rate of 61% via the percutaneous route, with a higher mortality in the percutaneous group which was mainly attributed to complications such as bile leaks and liver hemato­mas [5]. Another important consideration is that with percutaneous stenting the patient will require an external drain, at least initially, which in addition to inconve­nience, pain, and leaking may also lead to infection, nutrient deciencies, malnutri­tion, dehydration, and electrolyte imbalance.
Endoscopic biliary decompression is done via the placement of a biliary stent through the ampulla of Vater using a side viewing duodenoscope during Endoscopic Retrograde Cholangiopancreatography (ERCP). The procedure can be done with moderate sedation or general anesthesia and procedure time can vary, with a mean length of 30 min. Prior to biliary cannulation, the endoscopist must decide on whether to place a metal or plastic stent, a covered or uncovered stent as well as decide on the length of stent to be used.
Plastic Versus Metal Stents
Plastic stents are effective and inexpensive (<$20). They can be removed if needed and they are relatively easy to exchange. Plastic stents eventually develop occlusion by a combination of bacterial biolm and sludge, with a resultant patency life of approximately 3months [8]. This necessitates repeated ERCPs with stent exchange, which can impart a substantial nancial and quality of life burden on the patient. The effect of stent diameter on time until occlusion was studied, and it appeared that
11.5 Fr stents were non-superior to 10 Fr stents in regard to rate of occlusion [9], and in practice 11.5 Fr stents are seldom used as they are technically challenging to place with no additional benet.
Self-expanding metal stents (SEMS) are highly effective, expensive (>$1000) and come with an increased patency of approximately 6months [8, 10]. Metal stents
488
ab
I. Elkhatib and M. Mesleh
are composed of laser-cut nitinol and are available as uncovered, partially covered, or fully covered types (Figs.29.1 and 29.2). The uncovered metal stents have an open mesh or cell conguration that embed in the biliary wall and are therefore not removable, whereas the fully covered stent is easily removable should the need arise. SEMS are available in diameter sizes of 6, 8, and 10mm diameter (much larger than the plastic counterparts), with lengths ranging from 4 to 10cm. They are deployed via through-the-scope (TTS) delivery systems.
The decision to use a plastic versus metal stent is made after consideration of the expected length of survival, anticipated treatment plan, costs, and physician exper­tise. That being said, the majority of endoscopists are now predominately using SEMS for palliation of malignant biliary obstructions. A systematic review and meta-analysis showed that metal stents had a lower risk of recurrent obstruction [10] although success rate and complication rate were not statistically different between SEMS use and plastic stents. As the majority of patients with pancreatic cancer at the time of bile duct obstruction are surviving longer than 2–6months, metal stents are becoming a more desirable option (especially with hopes of decreased need to hold chemotherapy in event of biliary blockage resulting in chol­angitis). Even if the therapeutic plan for the patient is still unclear at the time of ERCP, placement of a short length (4–6 cm long) SEMS will not interfere with future surgical resection. A Monte Carlo decision analysis compared multiple approaches to patients with obstructive jaundice from pancreatic cancer in whom the surgical plan was undetermined and results showed that placement of a short length SEMS is the preferred initial treatment for overall cost reduction [11]. In a high-volume center, there should be a standardized approach to pre-op stenting based on the endoscopist and surgeon preferences.
Fig. 29.1 Endoscopic appearance of an fully uncovered (a) and fully covered (b) self-expanding metal biliary stent
29 Palliation ofPancreatic Cancer
Fig. 29.2 Fluoroscopic image of a fully uncovered non-laser-cut self­expanding metal stent placed across a 3cm long distal biliary stricture from pancreas head cancer. Note the appropriate “waist­sign” in the mid-line of the stent
Covered Versus Uncovered Metal Stents
489
Covered Self-Expanding Metal Stents (CSEMS) were developed with the goal of increasing patency duration over Uncovered Self-Expanding Metal Stents (USEMS). Tumor in-growth and overgrowth are examples of reasons SEMS can become occluded. There have been multiple randomized controlled trials comparing the two, yet these trials failed to show increased patency rates for CSEMS [1214]. For example, in one of the trials evaluated 400 patients that had stent placement for malignant distal biliary obstruction; the authors found no difference between types in regard to stent patency or patient survival. Both CSEMS and USEMS had a near­identical stent failure rate (24% versus 23%) and no statistical difference between the time it took for 25% of the stents to occlude (145 days for CSEMs, versus 199days for the USEMS). Furthermore, median survival time of the patients was similar (116 versus 174days), but stent migration was more common in the patients with CSEMS (3% versus 0%) [15]. While a more recent meta-analysis in 2011 of ve multicenter randomized trials comparing CSEMS and USEMS suggested a modest benet to CSEMS over USEMS in regard to stent patency the increased risk of stent migration likely outweighs this marginal trend towards increased patency [16].
It has been suggested that patients with intact gallbladders should receive uncov­ered SEMS, with the intent of reducing the risk of cystic duct obstruction and resul­tant cholecystitis, although no strong data exists to support this. This may be of more concern when contrast is seen in the gallbladder during ERCP.There is a risk of acute cholecystitis due to cystic duct outow obstruction. Surgery is typically not
490
I. Elkhatib and M. Mesleh
a rst resort and may not be an option at all. A common option is placement of a cholecystostomy tube with interventional radiology. This drain will likely never come out and a newer option is EUS-guided cholecystostomy using an axios stent to decompress the gallbladder into the duodenum. This therefore is not an option if the duodenum is also obstructed.
Biliary stenting in the setting of malignant obstruction can be challenging due to tumor involvement of the duodenal wall or duodenal obstruction that prevents access to the ampulla. In these cases, interventional radiology with percutaneous biliary access has traditionally been used. However, recently a variety of EUS­guided techniques have been used to access the biliary system and place stents [1719]. The endosonographic approach can be either a transgastric or transduode­nal puncture of the biliary tree to pass a guide wire antegrade though the papilla for stent placement or creation of a choledocho-duodenostomy or hepatico- gastrostomy. Of note, the current complication rate of these approaches is about 20% and needs to be performed in a tertiary care center with extensive interventional endoscopic experience. Immediate interventional radiology and surgical back up should be available [20].
Stent Obstruction
As pancreatic cancer patients with biliary stents live longer due to improved onco­logic treatment options, the concern for developing cholangitis or biliary obstruc­tion has increased. This is due to either accumulation of biolm and sludge or related to food impaction. Recent studies suggest that the chance of stent occlusion and cholangitis at 1year is as high as 46% [21, 22]. If patients are actively receiving treatment with chemotherapy, the immunosuppression can increase the severity of their illness. Patients should be instructed that any shaking chills (rigors) or fevers likely represent biliary obstruction. Sometimes this is transient with relatively nor­mal liver tests, and sometimes will be associated with jaundice and elevated liver tests. Patients with severe symptoms need to go to the emergency room for evalua­tion and probable hospitalization, while those with mild symptoms can sometimes be managed with outpatient oral antibiotics. Patients with suspected stent occlusion should be considered for repeat ERCP in order to sweep out any debris/food from the stent and/or place a new stent. Occasionally for long-term management or repeatedly occluding metal stents, the patient will be placed on oral ursodeoxycho­lic acid (to increase biliary secretion and ow) and/or prophylactic ERCP biliary stent cleaning with balloon sweep.
Future directions in palliative biliary stenting include potential endoscopic place­ment of drug-eluting stents to increase stent patency and deliver local therapy as well as radio frequency ablation of the tumor in-growth within the stents. Newer stents and instruments may allow quick and effective endoscopic choledocho­duodenostomy or hepatico-gastrostomy with expanding opportunity of endoscopic therapy for proximal biliary blockage from metastatic disease.
29 Palliation ofPancreatic Cancer
491
Surgical Options
Surgical options for biliary decompression include hepaticojejunostomy, choledo­chojejunostomy and cholecystojejunostomy. The choice of which type of surgical procedure to perform depends on the common bile duct diameter and surgeon’s preference. The efcacy of surgical bypass in successfully decreasing hyperbiliru­binemia has been estimated at up to 90% [23]. Even with this very effective tech­nique, as the tumor progresses, the new anastomosis can become occluded as the malignancy progresses. For tumors in the head of the pancreas, a hepaticojejunos­tomy may be preferred because it will be anatomically more distant from the tumor.
Traditionally, a hepaticojejunostomy is created in an end-to-side or side-to-side anastomosis between the bile duct and Roux-en-Y loop of jejunum. An end-to-side anastomosis is easy to visualize and ensures a widely patent anastomosis but requires circumferential dissection around the bile duct. If this circumferential dis­section is difcult due to tumor progression or lymphadenopathy, then a side-to-side anastomosis may be favorable. Knowledge of the vasculature to the bile duct is important during dissection to decrease ischemia, which may lead to leak or stenosis.
The Roux limb may be brought up to the hepatic hilum in an ante-colic or retro­colic fashion. Ideally, the roux limb should be distanced as much as possible from the primary tumor to decrease the future risk of roux limb occlusion if the tumor progresses. The anastomosis should be constructed with an absorbable suture to decrease the risk of stricture and stone formation. The choice of running vs inter­rupted suture will depend on the duct size and surgeon preference.
While this surgical bypass has been historically done in an open fashion, the increasing usage of minimally invasive surgery may decrease length of stay, wound infection rate and postoperative pain. The biliary anastomosis can be performed laparoscopic or robotically in high-volume centers with appropriate experience.
The risks of surgery include bleeding, biliary leak, and anastomotic stricture. In addition, the risks of general anesthesia are pertinent in patients who may have a poor performance status due to their advanced malignancy. These risks are critical for consideration when discussing options with the patient and treatment team.
Endoscopic Versus Surgical Intervention
Endoscopy is the more effective initial approach. Compared to surgical bypass, endoscopic biliary drainage has been shown to have a decreased length of stay, lower morbidity, lower mortality, and improved quality of life [24]. This can help initiate chemotherapy sooner since recovery from a major operation is not needed.
There are multiple factors which need to be considered when deciding on an optimal approach. The most obvious decision may be based on the technical feasi­bility of the technique. If there is a large bulky pancreatic malignancy that is extend­ing into the hepatic hilum, a surgical bypass may not be technically possible due to