Biliopancreatic fistula and abscess formation in the bursa omentalis associated with intraductal papillary mucinous cancer of the pancreas

We describe an unusual case of biliopancreatic fistula, free perforation, and subsequent abscess formation within the lesser peritoneal sac associated with intraductal papillary mucinous carcinoma (IPMC). A 71-year-old man presented with general fatigue and loss of appetite that had persisted for 1 month. Abdominal computed tomography (CT) revealed findings consistent with an intraductal papillary mucinous neoplasm (IPMN) of the pancreas, accompanied by abscess formation in the bursa omentalis. Gastrointestinal fiberscopy revealed a swollen papilla of Vater expanded by sticky mucus, and a communication between the pancreatic duct and bile duct was demonstrated by the injection of indigo carmine solution into the pancreatic duct. Percutaneous transhepatic abscess drainage (PTAD) was performed on the day of admission. After this procedure, the patient was managed for 1 month and supported nutritionally with glycemic control for diabetes mellitus. After admission, the patient had an episode of obstructive jaundice that was treated by retrograde biliary drainage. Pancreaticoduodenectomy with lymph node dissection was then performed. Pathological examination revealed IPMN with patchy, scattered carcinoma of the pancreatic head and uncinate process with the formation of a biliopancreatic fistula. Bile duct epithelium in the area of the biliopancreatic fistula demonstrated atypical papillary epithelium suggestive of tumor invasion.     

胰十二指肠切除术后胰瘘的原因及临床分析

目的 分析胰十二指肠切除术后胰瘘的原因及预防经验。方法 回顾分析1994～2003年行胰十二指肠切除术的63例患者的临床资料，对影响胰瘘发生的因素和采取的治疗方法进行总结。结果 胰瘘与吻合技术有关，胰瘘的发生与残胰断面的处理以及胰实质的坚硬度、胰管的直径有关；胰管内支撑引流可预防PD术后胰瘘。结论 胰管内支撑引流和良好的胰切面血供是预防PD术后胰瘘的关键。     

Experimental and clinical studies on pancreatic duct obstruction in preventing pancreatic fistula formation]

Even after prolonged use in clinical practice, obstruction of the pancreatic duct in preventing fistula formation still lacks solid proof. Sixteen dogs were randomized into an pancreatic duct obstruction group and a control group. Four to 8 ml of silicon gel was injected into the pancreatic duct in the former group while the latter group received exploratory laparotomy only. The pancreas was examined histopathologically 1, 3, 5, 7 and 9 months after operation. It was shown that the exocrine glands underwent marked atrophy but the endocrine glands showed only mild damage. Clinical studies on 27 patients who were operated for pancreatic cancers and diseases showed that pancreatic fistula developed in 7.7% of patients (1/13) in the obstruction group and 21% (3/14) in the control group.     

TH胶胰管栓塞在Whipple术中的应用

胰瘘为Whipple术后最严重的并发症之一,直接影响了手术疗效。本组观察了10例Whipple术中采用TH胶栓塞胰管,以期防止胰瘘的临床效果。结果表明,该方法能有效地阻断胰液分泌,减少胰瘘的发生;该方法可免去传统的胰肠吻合和胰液引流,简化手术操作,缩短术时,有助于病人的术后恢复。     

A case of refractory pancreatic fistula following pancreaticoduodenectomy treated successfully by intestinal decompression catheter insertion to jejunum under local anesthesia

The case was an 80-year-old woman with inferior bile duct cancer. The patient had undergone subtotal stomach-preserving pancreaticoduodenectomy with end-to-side pancreaticojejunostomy. Postoperative pancreatic fistula was observed in a short period and was treated by somatostatin analog administration and abscess drainage. Despite these conservative therapies, pancreatic fistula resulted in abdominal bleeding from the branch of dorsal pancreatic artery, which stopped by emergent transcatheter arterial embolization. Because pancreatic fistula had become refractory, the intestinal decompression catheter insertion was performed under local anesthesia to the jejunum located directly below abdominal wall. After this surgery, pancreatic fistula was resolved over a few weeks. This technique could be safely performed and avoided the injury of drainage fistula, and was considered to be an option for treating refractory pancreatic fistula.     

胰十二指肠切除术中胰管结扎预防胰瘘的临床研究

目的 :研究胰十二指肠切除术后胰管暂时性结扎对胰瘘的预防作用。方法 :对山东省肿瘤医院1989年 5月 - 2 0 0 2年 10月因壶腹周围肿瘤行胰十二指肠切除术的 2 30例患者 ,比较胰管结扎组 (A组 )和胰管不结扎组 (B组 )胰瘘的发生情况。结果 :胰管A组 16 0例患者发生胰瘘 4例 ,发生率为 2 5 % ;B组7例出现胰瘘 ,发生率为 10 % ,两组差异有显著意义 ,P <0 0 5。结论 :行胰十二指肠切除术时胰管暂时性结扎手术操作简单 ,预防胰瘘效果可靠 ,是胰十二指肠切除术胰管较可靠的处理方式     

Microcarcinoma of the pancreas: report of a case

A 53-year-old man complaining of vertigo initially consulted a nearby hospital. While undergoing a medical examination, which included abdominal ultrasonography and a CT scan, a dilatation of the pancreatic duct was found. The patient was then admitted to our hospital for a more thorough examination. Laboratory findings revealed an elevated elastase-1 level and a DM-pattern of 75 g-OGTT. ERP showed a localized constriction in the main pancreatic duct and diffuse dilatations of the distal main duct. A cytologic examination revealed no malignant cells in the pancreatic juice. Even so, though a carcinoma was not confirmed, a pancreaticoduodenectomy was performed, since a carcinoma of the pancreas head was suspected. A histological examination of the resected specimen uncovered a nonfunctioning islet cell carcinoma, 8 mm in diameter. This case was considered fortunate, in that an early stage pancreatic cancer, adjacent to the main duct, had been detected by imaging diagnoses.     

Biliopancreatic fistula caused by an intraductal papillary-mucinous tumor of the pancreas confirmed by biochemical analysis of mucin

Intraductal papillary-mucinous tumor of the pancreas is occasionally accompanied by biliopancreatic fistula. However, it is difficult of show the inflow of mucin produced by the tumor into the common bile duct. To confirm the biliopancreatic fistula, the mucin-rich fraction was purified from the bile and stained with antimucin antibodies. Western blot analysis showed characteristic smear staining patterns for mucin molecules with three types of antimucin antibodies. Immunohistochemical analysis with the antibody showed significant signals of the cancer cells and the luminal content of the dilated pancreatic duct. These results showed that the bile contained an abundance of mucin, which was produced by the primary pancreatic tumor. In cases with intraductal papillary-mucinous tumor of the pancreas, biochemical analysis of mucin molecules in the bile can be of clinical use in consideration of pathological process of tumor progression.     

肿块型胰腺淋巴瘤的CT诊断及鉴别

目的 分析肿块型胰腺淋巴瘤的CT表现,以提高诊断水平.方法 回顾性分析9例经病理或临床随访证实的肿块型胰腺淋巴瘤的CT和临床资料.结果 9例肿瘤均为单发,位于胰头部5例、颈体部3例、尾部1例;呈不规则分叶状7例,椭圆形2例;最大径约2.3～7.6 cm,平均4.9 cm.CT平扫肿瘤边界欠清,呈等或略低密度,CT值平均36.5 HU.增强扫描动脉期轻度强化,静脉期呈轻或中度持续强化,7例均匀强化,2例强化不均.5例肿瘤包绕邻近血管,类似“血管漂浮征”.所有肿瘤未见钙化,未见明显胰管增宽,2例出现胆总管轻度增宽.腹腔或腹膜后多发肿大淋巴结6例,增强较均匀一致,中等强化.结论 CT对肿块型胰腺淋巴瘤的诊断及鉴别具有较大价值.     

A case report--locally advanced pancreatic adenocarcinoma was resected after chemotherapy

The case was a 36-year-old male whose chief complaints were anorexia and weight loss. Upper gastrointestinal endoscopy revealed circumferential stenosis in the fourth portion of the duodenum, while CT revealed a tumor with a diameter of 60 mm continuing as a single mass from the pancreatic body and tail to the fourth portion of the duodenum, and this was accompanied by findings that raised suspicions of circumferential invasion of the superior mesentric artery (SMA). Based on these results and biopsy, the patient was diagnosed with pancreatic and SMA invasion of duodenal cancer that was considered to be unresectable. After performing gastrojejunostomy, we administered DOC (40 mg/m2, day 1), CDDP (60 mg/m2, day 1), and S-1( 80 mg/m2, day 1-14) for 3 courses. The tumor response was PR and the images indicated the SMA invasion was disappeared. We judged that the tumor could be gone by a resection while preserving the SMA. In the surgical findings, the tumor continued as a single mass from the pancreatic body and tail to the third portion of the duodenum, and the surrounding area exhibited marked fibrosis. We performed a pancreatic tail resection along with combined resection of third and fourth portions of the duodenum, transverse colon and splenic flexure, and left adrenal gland. The case was diagnosed to be well-differentiated invasive ductal pancreatic cancer with duodenal invasion. Cancer invasion was not observed in any of the stripped surfaces surrounding the pancreas. The T3, N1, M0, fStage III antitumor effects were mildly effective. In this case, the treatment was initially started by considering the case as one of duodenal cancer, but the final results of a pathological diagnosis revealed that it was pancreatic cancer. However, either way, even though the case was unresectable before the chemotherapy performed for duodenal cancer was significantly effective for the pancreatic cancer. Therefore, a resection became possible, and an R0 resection was also effective.     

Vater壶腹病变多层螺旋CT诊断分析

目的探讨多层螺旋CT（MultisliceCT,MSCT）对Vater壶腹病变的临床诊断价值。方法回顾分析2l例病理证实Vater壶腹病变的MSCT表现。结果本组2l例患者中,壶腹部软组织密度影占71．4％（15／21）;胆总管扩张占90．5％（19／21）,平均直径（1．59±0．50）cm;胰管扩张占76．2％（16／21）,平均直径（0．61±0．37）cm;出现双管征占66．7％（14／21）。病变来源于壶腹、十二指肠、胆管分别为13例、6例、2例。十二指肠来源者壶腹部见软组织密度影显示率83．3％（5／6）;壶腹来源病变胆总管扩张、胰管扩张程度高于十二指肠来源病变。结论MSCT对壶腹部病变的定位、定性诊断可提供一定依据,对临床治疗方案具有重要价值。     

Small periampullary duodenal gastrointestinal stromal tumor treated by local excision: report of a case

Gastrointestinal stromal tumors (GIST) are mainly located in the stomach and the small bowel, with the duodenum accounting for about 4%. We report the case of a 66-year-old woman with a periampullary GIST of the duodenum that was treated by local excision and direct duodenal wall defect repair. Since no definitive clinical criteria have been established to differentiate malignant from benign mesenchymal tumors, preoperative cytology was not available and surgical removal of the 3.5 cm tumor was feasible, the patient was treated conservatively. The morbidity and mortality rates of the more radical and invasive duodenopancreatectomy, in particular when dealing with a soft pancreatic stump with a narrow pancreatic duct, are, in our opinion, too high for a potentially benign disease when the more conservative procedure is feasible. Four years after surgery the patient is doing well and control CT scan showed the absence of local recurrence.     

胰肠吻合方式对胰十二指肠切除术后胰瘘的影响

目的:探讨胰肠吻合方式对胰十二指肠切除术后胰瘘的影响。方法:回顾性分析2008年10月至2013年8 月天津医科大学肿瘤医院收治的145 例术前诊断为壶腹周围肿瘤行胰十二指肠切除术患者的临床资料。对影响术后胰瘘发生的相关因素进行统计分析。结果:本组患者中27例术后发生胰瘘。在4 种胰肠吻合方式中，胰管空肠黏膜吻合和Blumgart 吻合的胰瘘发生率低，且皆无C 级胰瘘。多因素分析应用Logistic回归，结果表明不同的胰肠吻合方式及性别为术后胰瘘发生的独立预后因素。结论:胰肠吻合方式是影响胰十二指肠切除术后胰瘘发生的危险因素。      

Pancreaticobiliary Ductal Anatomy in the Normal Population

Background: The complex anatomy of the pancreaticobiliary duct was crucial in management of pancreatic and biliary tract disease. Materials and Methods: Fresh specimens of pancreas, common bile duct (CBD), and duodenum were obtained en bloc from autopsies of 160 patients. Results: Ninety-three male and 67 female patients were included. The length of the pancreas ranged from 9.8-20 cm (mean, 16.20 /- 1.70 cm). The intrapancreatic portion of the CBD showed patterns of three types: most common (85.30%) was type A, in which the anterior surface of the common bile duct was totally covered, while its posterior surface was partially covered, by the pancreatic parenchyma. On dissection of the accessory duct of Santorini, the accessory duct was traceable to the duodenal wall in 67.6%. The anatomy of the Wirsung-choledochus confluence was grouped into five different types. The common channel was found in 75.60% and its length varied from just a common junction (so-called "V-type" anatomy) to 15 mm (Y-type-b). Separate papillae (so-called "II-type") were found in 15.3% of specimens. Conclusions: Several important points regarding the anatomy of the pancreaticobiliary junction and pancreatic ductal system were illustrated in this study.     

Controversies in the diagnosis and treatment of periampullary tumours

Most tumours in the head of the pancreas are adenocarcinomas of the exocrine pancreas. However, carcinomas located in the head of the pancreas may originate from the papilla of Vater, the distal part of the common bile duct, or the duodenum. Tumours of that region, within 2 cm of the greater duodenal papilla, have been usually described as periampullary neoplasms. Adenocarcinomas separated from the major duodenal papilla and located in the major pancreatic duct, common bile duct, or duodenum are identified as ductal pancreatic carcinomas, distal bile duct cholangiocarcinomas or duodenal carcinomas. Surgical treatment is the only chance for cure. Pancreatoduodenectomy is the procedure of choice. Regional lymphadenectomy and removal of at least 16 lymph nodes are necessary for optimal long-term outcomes. Indications for adjuvant chemotherapy remain controversial. This review evaluates the available data on the pathological assessment of periampullary tumours and discusses the controversies of therapeutic management, emphasising adjuvant treatment.     

Obstructive jaundice due to a rare periampullary tumor

Gangliocytic paraganglioma is a rare neuroendocrine tumor predominantly arising in the second part of the duodenum with rare local recurrence or metastasis to regional lymph nodes.A 92-year-old female presented with obstructive jaundice.On exam she had pale conjunctiva and icteric sclera.Abdominal examination revealed tenderness in the upper abdomen.Laboratory data was consistent with obstructive jaundice.Computed tomography of the abdomen revealed a dilated gall bladder and a common bile duct(CBD)with no evidence of liver lesions or pancreatic head mass.Endoscopic ultrasonography revealed a 1 cm isoechoic submucosal nodule at the periampullary area,dilated CBD(9 mm),a prominent pancreatic duct(4.1 mm)and a hydropic gall bladder with no stones.Endoscopic retrograde cholangiopancreaticography was performed to relieve obstruction and showed a 1 cm periampullary mass which underwent an en-bloc snare resection.Histopathology analyses with immunohistochemical stains were positive for cytokeratin,synaptophysin,S-100 protein,neuron specific enolase and negative for actin and desmin consistent with periampullary gangliocytic paraganglioma.Periampullary gangliocytic paraganglioma is a rare benign tumor of the small bowel.Common presentation includes abdominal pain and obstructive jaundice which should be included in differential diagnosis of obstructive jaundice.Endoscopic resection is a curative therapy in the absence of local invasion or distant metastasis.     

Clinical Efficacy of Endoscopic Pancreatic Drainage for Pain Relief with Malignant Pancreatic Duct Obstruction

Objective: This study was conducted to investigate the efficacy of pancreatic drainage for pain relief in advanced pancreatic cancer. Method: Seventy-one patients with pancreatic carcinoma were divided into two groups: dilated and non-dilated pancreatic ducts. All patients underwent endoscopic retrograde cholangiopancreatography (ERCP), endoscopic biliary stenting and pancreatic stenting. Visual Analog Scale (VAS) scores, pain remission rates and survival time were evaluated during follow-up. Results: The post-ERCP VAS score of the dilated group was lower than that of the non-dilated group at 1 and 3 months post-ERCP. There was no difference at 6 months. The pain remission rate in the dilated duct group was significantly higher than that in non-dilated duct groupin 1 and 3 months post-ERCP. The median survival times were 8.17 and 8.22 months respectively. Conclusion: Endoscopic pancreatic drainage can relieve pain of advanced pancreatic cancer accompanied by safe dilation of the pancreatic duct.     

A Case of Pancreatic Intraepithelial Neoplasia That Was Difficult to Diagnose Preoperatively

A 63-year-old female patient presented to a local physician with pain in her back and epigastric region. An abdominal computed tomography (CT) scan revealed a pancreatic tumor, and the patient was referred to our hospital. Multiple imaging studies that included ultrasonography (US), CT, MRI, and endoscopic US revealed a cystic lesion 3–4 cm in size with node-like projections in the body of the pancreas. The distal main pancreatic duct was also found to be dilated. Endoscopic retrograde pancreatography revealed an irregular stenosis of the main pancreatic duct proximal to the cystic lesion, and malignancy was suspected. The patient was preoperatively diagnosed with pancreatic ductal carcinoma concomitant with intraductal papillary mucinous carcinoma, and a distal pancreatectomy was performed. Rapid pathological diagnosis during surgery revealed positive surgical margins for pancreatic intraepithelial neoplasia (PanIN). Further resection was performed twice, her surgical margin was positive and total pancreatectomy was ultimately conducted. Histopathological findings revealed diffuse microinvasive cancerous lesions corresponding to PanIN-2 (moderate dysplasia) to PanIN-3 (carcinoma in situ) throughout the pancreas. PanIN involves microlesions of the ductal epithelium that may precede pancreatic cancer. Ascertaining changes in PanIN using images provided by diagnostic modalities such as CT and US is challenging. Ductal stenosis and distal cystic lesions resulting from atrophy and fibrosis of pancreatic tissue were noted around PanIN. Considering the possibility of PanIN, a precancerous lesion during differential diagnosis will help to improve early detection and prognosis for patients with pancreatic cancer.Key Words: Pancreatic intraepithelial neoplasia, Pancreas cancer, Pancreatic duct stenosis, Pancreatic cyst, Diagnosis     

Robotic pancreaticoduodenectomy with biodegradable ductal stenting (Archimedes BPS®)

BackgroundPostoperative Pancreatic Fistula (POPF) development remains a challenge after pancreaticoduodenectomy, occurring in 3–45% of cases [1]. The placement of a trans-anastomotic Wirsung stent is usually done in high-risk patients to decrease incidence and severity of POPF.MethodsHerein, we present a fully robotic pancreaticoduodenectomy with a biodegradable ductal stent interposition in a 47 y.o. female with a main duct IPMN of the pancreatic head and a fistula risk score of 6 (Moderate-risk).VideoAfter gastrocolic ligament division and hepatic flexure and duodenum mobilization, the loco-regional lymphadenectomy was performed. Following gastric transection with endo-GIA, the bile duct and gastroduodenal artery have been divided, and the cholecystectomy performed. The neck of the pancreas has been transected, the jejunum divided with endo-GIA and mobilized from the Treitz ligament, and the uncinate process dissected from the mesenteric vessels. A Blumgart anastomosis has been performed between the soft-texture pancreatic stump and the jejunal loop with the interposition of a 6 Fr/60 mm long, medium degrading stent (20 days) in the 2 mm duct (Archimedes BPS®, AMG Int., Winsen-Germany). The hepatico-jejunostomy and gastro-jejunostomy have been performed distally on the same loop. Three abdominal drains have been positioned.ResultsSurgery lasted 480 min, with 175 mls blood loss. The patient postoperatively developed a biochemical leak and was discharged home by day 12. She was readmitted a month later for an amylase-negative intra-abdominal abscess that was successfully treated with percutaneous drainage.ConclusionBiodegradable pancreatic stent positioning could be an effective strategy in reducing POPF occurrence in high-risk patients.     

A case of aortoduodenal fistula following radiotherapy of retroperitoneal metastatic disease

A new case of aortoduodenal fistula was added to the five cases previously reported in the literature, in which malignancy and/or its treatments could be implicated. This 67 year-old woman, six years previously had been placed on a therapy including irradiation on the pelvis for cancer of uterine cervix. For this time she underwent a radiotherapy completed in a total dose of 55.6 Gy combined with hyperthermia and chemotherapy for retroperitoneal metastatic disease with excellent response. Three months later she had hematemesis followed by melena and deteriorated to hemorrhagic shock. Emergent aortography detected contrast extravasation from the aorta with subsequent opacification of the duodenum, and immediate intraaortic balloon occlusion was done, but she died soon thereafter. Postmortem examination revealed the fistula from the aorta just above the bifurcation to a 2 by 1.5 cm. area of the posterior wall of the third portion of the duodenum. Accentuated arteriosclerosis in locally irradiated portion of the aorta, obstruction of small arteries from organized thrombus and hyaline necrosis in the wall of the fistulous tract were defined without evidence of tumor invasion. Based upon the findings of the patient reported herein, radiation might be another possible etiologic factor in aortoduodenal fistula, as well as tumor invasion per se.