Surgical management of insulinoma: diagnosis of tumor location and high incidence of malignancy

The findings in twenty-two patients with insulinoma were reviewed, as continuous efforts should be made to establish preoperative localization of the tumor. Superselective arteriography and percutaneous, transhepatic portal vein and pancreatic venous catheterization are highly recommended approaches. At the time of surgical intervention, a cautious exploration of the pancreas after thorough mobilization is most important. Recent use of intraoperative ultrasonography increases the likelihood of finding these occult tumors which locate deeply in the head of the pancreas. Apart from the diagnostic problems, we wish to emphasize the high incidence of malignancy (7/22, 31.8 per cent) in our series. Although patients with malignant insulinoma had a much better prognosis compared to those with a pancreatic ductal malignancy, pancreatic resection with regional lymphnode dissection seems to be a rational procedure. Enucleation can be done when intraoperative findings of the tumor and regional lymphnode indicate no malignant features and no multiple lesions. However, at the first operation, enucleation is still a procedure of choice, even for the malignant insulinoma in the head with a well-defined capsule and no metastatic lesions, the objective being to avoid a duodenopancreatectomy or total pancreatectomy.     

Role of intraoperative ultrasonography in the surgical management of insulinomas

The findings in 35 surgically treated patients with insulinoma and 43 tumors of these patients were analyzed to confirm the efficacy of diagnostic modalities and surgical interventions. The rate of accurate preoperative tumor localization was 72% by angiography, 53% by computed tomographic scan, 55% by ultrasonography, and 83% by percutaneous transhepatic portal vein sampling. Extensive operative exposure and palpation detected 81% of the tumors and intraoperative ultrasonography demonstrated 96% of the tumors. Intraoperative ultrasonography was significantly better than any other diagnostic procedure and was able to demonstrate the anatomical relationship of the insulinoma to the essential structures of the pancreas. Intraoperative ultrasonography also helped determine the safest route for enucleating the insulinomas. Five patients (14%) in our series had metastatic diseases; 2 of these patients with metastases beyond the lymph nodes died due to the growth of tumors. The other 33 patients were free of insulinoma syndrome after the removal of the insulinomas. Streptozotocin was used in 1 patient with recurrent malignant insulinoma, with encouraging results.     

Duodenum-preserving total pancreatic head resection for cystic neoplasm—a limited but cancer-preventive procedure

Background Cystic neoplastic lesions of the pancreas are found in up to 10% of all pancreatic lesions. A malignant transformation of cystic neoplasia is observed in intraductal papillary mucinous tumor (IPMN) lesions in 60% and in mucinous cystic tumor (MCN) lesions in up to 30%. For cystic neoplasia located monocentrically in the pancreatic head and that do not have an association with an invasive pancreatic cancer, the duodenum-preserving total head resection has been used in recent time as a limited surgical procedure. Patients An indication to duodenum-preserving total pancreatic head resection is considered for patients who do not have clinical signs of an advanced cancer in the lesion and who have main-duct IPMN and monocentric MCN lesions. In 104 patients with cystic neoplastic lesions in the Ulm series, 32% finally had a carcinoma in situ or an advanced pancreatic cancer. The application of a duodenum-preserving total pancreatic head resection in patients with asymptomatic cystic lesion is based on the size of the tumor and the tumor relation to the pancreatic ducts. For patients who have preoperatively clinical signs of malignancy, a Kausch–Whipple type of oncologic resection is recommended. Results Duodenum-preserving total pancreatic head resection is used in several modifications. The surgical procedure is a limited pancreatic head resection which necessitates segmental resection of the peripapillary duodenum. Hospital mortality is very low; in most published series it is 0%. The long-term outcome is determined by completeness of resection for both—benign and malignant—entities. Careful evaluation of the frozen section results has a pivotal role for intraoperative decision making. Conclusion A duodenum-preserving total pancreatic head resection is a limited surgical procedure for patients who suffer a local monocentric, cystic neoplastic lesion in the pancreatic head. Absence of an advanced pancreatic cancer and completeness of extirpation of the benign tumor determine the long-term outcome. In regards to the location of the lesion in the pancreatic head, several modifications have been applied with low hospital morbidity and mortality below 1%.     

Surgical treatment of persistent hyperinsulinemic hypoglycemia (PHH) (insulinoma and nesidioblastosis)

Background The persistent hyperinsulinemic hypoglycemia is characterized by clinical symptoms that occur when the blood glucose levels drop below the normal range. Two pathological situations cause this clinical problem: The presence of a tumor of the pancreas secreting excessive amounts of insulin, known as insulinoma, and congenital beta-cell hyperplasia in the pancreas in children and noninsulinoma pancreatogenic hypoglycemia syndrome in adults. Patients and methods Clinical characteristic and surgical outcome of a group of 20 patients operated on for this hypoglycemic syndrome; 18 for insulinoma and two for nesidioblastosis in children was studied. Results eight of the insulinomas were in the head of the pancreas, two in the body, and the remaining eight in the tail. The surgical technique was enucleation in nine cases, local resection in one case because of suspicious malignancy, and distal pancreatectomy in eight cases. Both children with nesidioblastosis underwent 85% pancreatectomy with splenic preservation. There was no mortality in the study, but three patients developed a low-volume pancreatic fistula after head enucleation. Conclusions Negative results in diagnostic localization together with the small size of the insulinoma represent a poor combination for successful surgery. The intraoperative ultrasonography is the method of choice for the identification of the tumor, as it is able to identify nonpalpable lesions. This paper was presented at the 2nd Biennal Meeting of the European Society of Endocrine Surgeons (ESES), 18–20 May 2006, Krakow, Poland.     

胰腺恶性内分泌肿瘤的诊断和治疗经验

目的 总结胰腺恶性内分泌肿瘤的诊治经验.方法 回顾性分析1969年1月至2008年12月南京医科大学第一附属医院收治的38例胰腺恶性内分泌肿瘤患者的临床资料.其中胰岛素瘤6例,胰多肽瘤23例,胰高血糖素瘤4例和胰腺类癌5例.结果除1例胰岛素瘤外,所有患者经术前影像学检查发现胰腺占位;手术切除率87%(33/38),病理学检查提示肝转移7例,淋巴结转移5例,血管、淋巴管发现瘤栓1例,局部浸润28例.术后随访24例,1例胰岛素瘤局部复发再次手术切除,1例胰腺类癌肝转移再次射频治疗,其余无转移、复发表现.结论 影像学检查是胰腺内分泌肿瘤的主要诊断依据.其恶性程度应根据术前影像学表现、术中探查、术后病理检查并结合随访综合判定.恶性胰腺内分泌肿瘤恶性程度低,手术切除率高,预后良好.     

Malignant insulinoma causing liver metastasis 8 years after the initial surgery: Report of a case

We report herein a rare case of malignant insulinoma which recurred as multiple liver metastasis 8 years after the initial resection. The patient was a 51-year-old Japanese man who originally presented in 1985 at the age of 43 years suffering from general malaise and syncope. The initial surgery in 1985 involved complete enucleation of a 15×13 mm insulinoma located in the uncus of the pancreas. Histopathologically, the tumor was diagnosed as a benign adenoma (insulinoma) which was immunohistochemically stained with only the anti-insulin monoclonal antibody. Macroscopically, there were no signs of either invasion or metastasis. During the subsequent 7 years, he did not show any symptoms or significant abnormality in laboratory data. However, in 1993, the patient again experienced syncope with hypoglycemia and hyperinsulinemia. Ultrasonography revealed multiple echogenic lesions in the liver and a second laparotomy confirmed multiple hepatic metastases from insulinoma, the histopathological findings of which were similar to those of the primary tumor from 8 years before. The patient is currently being treated with streptoz tocin and 5-fluorouracil via a catheter in the hepatic artery.     

机器人与腹腔镜肿瘤剜除术治疗胰头部胰岛素瘤的对比研究

目的:探讨机器人与腹腔镜肿瘤剜除术治疗胰头部胰岛素瘤的临床效果。方法:回顾分析2016年1月至2019年10月施行腹腔镜或机器人胰头部胰岛素瘤剜除术22例患者的临床资料。对比分析两组术中出血量、手术时间、中转开腹率、术后住院时间及胰瘘等并发症发生率。结果:22例手术均获成功,无术中输血、术后出血、C级胰瘘、严重感染、二次手术及死亡等并发症发生;术后病理证实为胰腺神经内分泌肿瘤;随访期间,临床症状完全缓解,无肿瘤复发。机器人组与腹腔镜组相比,术中出血量[(65.0±43.18)mL vs.(89.09±118.08)mL]、手术时间[(146.81±84.15)min vs.(171.36±57.71)min]、术后住院时间[(6.70±1.42)d vs.(9.55±5.52)d]、B级胰瘘发生率(9.1%vs.27.3%)差异无统计学意义(P>0.05)。腹腔镜组11例患者中4例中转开腹,中转率36.36%;机器人组11例患者无一例中转开腹,两组中转率差异无统计学意义(P>0.05)。结论:机器人胰头部胰岛素瘤切除术安全、可行,手术成功率可能更高,具有一定的潜在优势。     

胰岛素瘤误诊探讨和诊治--附17例报告

目的　探讨避免胰岛素瘤误诊 ,总结诊疗体会。方法　回顾性分析 1984～ 2 0 0 3年 12月收治的 17例胰岛素瘤的临床资料。结果　本组患者从发病到确诊 1～ 10年 ,平均 2 .5 4年 ,一年内确诊着 3例。占 17.6 4 % ,均有被误诊病史 ,最常见的误诊原因分别是反应性低血糖 (占 4 7.0 5 % )、癫痫、颅内病变。 5 2 .94 % (9/ 17)在确诊时有智力减退或反应迟钝 ,Whipple三联征 [胰岛素与血糖比值(I/G) >0 .3]。CT、MRI、术前B超、术中B超 (IOUS)诊断 ,均行手术治疗。其中肿瘤剜除术 9例 ,胰体尾切除 5例 ,楔形切除 3例 ,全组无手术死亡 ,术后无低血糖发作。术后胰瘘 2例。结论　Whipple三联征I/G >0 .3是胰岛素瘤定性诊断的主要依据。术前MRI、B超 ,术中详尽扪诊联合IOUS可取得较为满意的定位诊断 ,据胰岛素瘤大小、部位、数目采取适宜的手术方式是良好疗效的关键。     

Diagnosis and surgical treatment of organic hyperinsulinism

From 1982 to 1998 144 patients (males 31.7%, females 68.3%) with organic hyperinsulinism underwent surgery. Mean age of the patients was 44.2 +/- 4.6 years. The causes of the development of this disease were benign insulinoma (82.6%), malignant insulinoma (6.9%), beta-cells hyperplasia and microadenomatosis (4.2%). In 6.3% of the patients the origin of the disease was not established. The location of the insulinoma in the pancreatic head was detected in 33.8%, in the body--in 35.2%, in the tail--31%. The sensitivity of the used methods of topical diagnosis was the following: US--40.3%, CT--28.6%, angiography (selective celiacography and upper mesentericography)--76.9%, blood samples from the right hepatic vein after intraarterial stimulation of different parts of the pancreas by Ca with measurement of immunoreactive insulin level--87.2%, intraoperative palpation--86.5%, intraoperative US examination--100%. Preoperatively, the authors used combined angiographic examination, the sensitivity of which made up 94.9%, this study being a single one which allows to reveal the region of the lesion of the pancreas in beta-cells hyperplasy. Tumor enucleation (59 patients), distal resection of the pancreas (50), the excision of the insulinoma (25), duodenopancreatic resection (1), explorative laparotomy (9) were made. Postoperative complications rate arose in 43.6% of the patients, mortality rate--7.7%. The best results were achieved in enucleation of insulinoma and distal resection of the pancreas. The authors suggest that in preoperative diagnosis of insulinomas the preferable methods should be US-examination and combined angiographic examination. Intraoperative revision should be made with use of US examination. Depending on the intraoperative findings the preference should be given either to enucleation of insulinoma or to distal resection of the pancreas.     

Pancreatic islet cell tumors

Tumors arising from the pancreatic islet cells represent a heterogeneous group of lesions. Some tumors present with well-characterized syndromes, while others appear to be nonfunctioning. Eighty-four patients with pancreatic islet cell tumors operated on at the Cleveland Clinic during a 35-year period were reviewed. The tumor types include 21 nonfunctioning tumors, 41 insulinomas, 16 gastrinomas, two vasoactive intestinal polypeptide (VIP)-omas, two carcinoids, and two probable cases of pancreatic parathyrinoma. Eleven patients had multiple endocrine neoplasia type I syndrome. Preoperative localization was possible in 63% of patients in whom it was attempted. Complete mobilization of the head and distal pancreas with bimanual palpation of the entire gland is critical for intraoperative tumor localization. Distal pancreatectomy is favored for tumors in the body and tail. In the head of the pancreas, small, benign lesions require enucleation, and large or malignant lesions necessitate a Whipple procedure. The operative morbidity rate was 24%, and the mortality rate was 3.6%. The 10-year survival rate was 54.7% for nonfunctioning lesions, 68.4% for gastrinomas, and 92.4% for insulinomas. At this time surgery represents the only way to cure these lesions.     

Value of 18-Fluorodeoxyglucose Positron Emission Tomography in the Management of Patients With Cystic Tumors of the Pancreas

OBJECTIVE: To assess the reliability of 18-fluorodeoxyglucose positron emission tomography (18-FDG PET) in distinguishing benign from malignant cystic lesions of the pancreas. SUMMARY BACKGROUND DATA: The preoperative differential diagnosis of cystic lesions of the pancreas remains difficult: the most important point is to identify malignant or premalignant cysts that require resection. 18-FDG PET is a new imaging procedure based on the increased glucose metabolism by tumor cells and has been proposed for the diagnosis and staging of pancreatic cancer. METHODS: During a 4-year period, 56 patients with a suspected cystic tumor of the pancreas underwent 18-FDG PET in addition to computed tomography scanning, serum CA 19-9 assay, and in some instances magnetic resonance imaging or endoscopic retrograde cholangiopancreatography. The 18-FDG PET was analyzed visually and semiquantitatively using the standard uptake value. The accuracy of 18-FDG PET and computed tomography was determined for preoperative diagnosis of a malignant cyst. RESULTS: Seventeen patients had malignant tumors. Sixteen patients (94%) showed 18-FDG uptake with a standard uptake value of 2.6 to 12.0. Twelve patients (70%) were correctly identified as having malignancy by computed tomography, CA 19-9 assay, or both. Thirty-nine patients had benign tumors: only one mucinous cystadenoma showed increased 18-FDG uptake (standard uptake value 2.6). Five patients with benign cysts showed computed tomography findings of malignancy. Sensitivity, specificity, and positive and negative predictive values for 18-FDG PET and computed tomography scanning in detecting malignant tumors were 94%, 97%, 94%, and 97% and 65%, 87%, 69%, and 85%, respectively. CONCLUSIONS: 18-FDG PET is more accurate than computed tomography in identifying malignant pancreatic cystic lesions and should be used, in combination with computed tomography and tumor markers assay, in the preoperative evaluation of patients with pancreatic cystic lesions. A positive result on 18-FDG PET strongly suggests malignancy and, therefore, a need for resection; a negative result shows a benign tumor that may be treated with limited resection or, in selected high-risk patients, with biopsy, follow-up, or both.     

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??Inferior head resection of the pancreas: A clinical analysis of 5 cases ZHU Ya-yun, GAO Yang, HUANG Xiu-yan, et al. *Department of General Surgery, Shanghai Jiaotong University Affiliated Sixth People’s Hospital, Shanghai 200233, China
Corresponding author: YUAN Zhou, E-mail: zhouyuan669@163.com
Abstract Objective To discuss the surgical techniques and clinical application of the inferior head resection of the pancreas. Methods The clinical data of five patients received inferior head resection of the pancreas from April, 2014 to May, 2016 in Department of Surgery, Shanghai Jiaotong University Affiliated Sixth People’s Hospital were analyzed retrospectively. Results Postoperative pathological findings indicated one patient with insulinoma, one with solid pseudopapillary tumor of the pancreas (SPTP), and three with intra-ductal papillary tumor. Grade A pancreatic fistula occurred in two patients and grade B in the other two. Bleeding within abdominal cavity was observed in the rest one patient. Gastric emptying dysfunction was observed in two patients. No such complications as bile leakage and postoperative acute pancreatitis were found in all patients. Conclusion Inferior head resection of the pancreas has such advantages of causing less harm and preserving more pancreatic tissue and over the traditional Whipple procedure. Thus it is practical for patients with benign or low-degree malignant occurring at the head of the pancreas.     

Carcinoma of the pancreatic head and periampullary region. Tumor staging with laparoscopy and laparoscopic ultrasonography.

OBJECTIVE: The authors performed a prospective evaluation of staging laparoscopy with laparoscopic ultrasonography in predicting surgical resectability in patients with carcinomas of the pancreatic head and periampullary region. SUMMARY BACKGROUND DATA: Pancreatic resection with curative intent is possible in a select minority of patients who have carcinomas of the pancreatic head and periampullary region. Patient selection is important to plan appropriate therapy and avoid unnecessary laparotomy in patients with unresectable disease. Laparoscopic ultrasonography is a novel technique that combines the proven benefits of staging laparoscopy with high resolution intraoperative ultrasound of the liver and pancreas, but which has yet to be evaluated critically in the staging of pancreatic malignancy. METHODS: A cohort of 40 consecutive patients referred to a tertiary referral center and with a diagnosis of potentially resectable pancreatic or periampullary cancer underwent staging laparoscopy with laparoscopic ultrasonography. The diagnostic accuracy of staging laparoscopy alone and in conjunction with laparoscopic ultrasonography was evaluated in predicting tumor resectability (absence of peritoneal or liver metastases; absence of malignant regional lymphadenopathy; tumor confined to pancreatic head or periampullary region). RESULTS: "Occult" metastatic lesions were demonstrated by staging laparoscopy in 14 patients (35%). Laparoscopic ultrasonography demonstrated factors confirming unresectable tumor in 23 patients (59%), provided staging information in addition to that of laparoscopy alone in 20 patients (53%), and changed the decision regarding tumor resectability in 10 patients (25%). Staging laparoscopy with laparoscopic ultrasonography was more specific and accurate in predicting tumor resectability than laparoscopy alone (88% and 89% versus 50% and 65%, respectively). CONCLUSIONS: Staging laparoscopy is indispensable in the detection of "occult" intra-abdominal metastases. Laparoscopic ultrasonography improves the accuracy of laparoscopic staging in patients with potentially resectable pancreatic and periampullary carcinomas.     

Insulinoma: Selective arterial calcium injection performed to confirm localization and complete resection

A case of insulinoma is reported in a patient in whom selective arterial calcium injection (SACI) tests were performed both to confirm tumor localization before surgery and to confirm complete tumor removal during surgery. An 18-year-old woman with hypoglycemic episodes was diagnosed with an insulinoma in the pancreatic body demonstrated by celiac arteriography. In a preoperative SACI test, calcium was injected into the splenic artery (SpA), gastroduodenal artery (GDA), and superior mesenteric artery (SMA). Serum immunoreactive insulin (IRI) and proinsulin levels were measured in hepatic venous samples. IRI was markedly increased after the injection of calcium into the GDA and SMA, while there was no response in IRI levels when calcium was injected into the SpA. Therefore, no occult insulinoma was revealed in the distal area fed by the SpA, although the presence of insulinoma was uncertain in the proximal pancreas. In the intraoperative SACI test, calcium was injected into the celiac artery. Insulin (determined by enzyme immunoassay) and proinsulin levels were measured in portal venous samples before and after resection of the tumor. After resection, these levels decreased in response to the calcium stimuli, confirming complete removal of the insulinoma. The SACI test was helpful to localize the insulinoma and was useful to confirm the complete removal of the tumor.     

胰岛素瘤的诊断与治疗

目的 探讨胰岛素瘤的诊断治疗经验.方法 对本院2008年3月至2012年12月收治的10例胰岛素瘤资料进行回顾性研究.其中男2例,女8例;年龄11 ～ 52岁,平均（32±15）岁.通过对患者进行定性、定位检查确诊,并进行手术干预和随访观察.结果 7例为单纯性胰岛素瘤,3例为多发性内分泌肿瘤-1型（MEN-1）相关的胰岛素瘤;9例为良性肿瘤,1例为交界性肿瘤.10例均有典型的Whipp1e三联征.肿瘤直径＜2 cm者占79.5％.手术切除肿瘤16个,其中12.5％位于胰头部,6.25％位于胰颈部,25％位于胰体部,56.25％位于胰尾部.术前定位检查发现的胰岛素瘤敏感性：经腹超声检查30.5％,多排螺旋增强CT 68.9％,薄层CT灌注扫描79.5％.术中定位诊断方法的敏感性：术中多普勒超声检查100％.81.25％的病例可行肿瘤的局部摘除术.随访6个月～5年,10例病情稳定,血糖均在正常范围之内.结论 手术切除是胰岛素瘤的最佳治疗方式.薄层CT多期动态增强扫描是目前胰岛素瘤术前定位诊断的首选方法,术中多普勒超声显著提高手术切除率.加强对胰岛素瘤的认识,早期诊断并合理积极的手术治疗,能够改善患者生活质量.     

Solid-pseudopapillary tumor of the pancreas masquerading as a pancreatic pseudocyst

Solid-pseudopapillary tumor of the pancreas is a very rare low-grade malignancy, predominantly occurring in adolescent girls and young women. Accurate diagnosis of this unusual tumor is important because the prognosis after surgical resection is excellent. We report a rare case of solid-pseudopapillary tumor of the pancreas in a 22-year-old woman that was misdiagnosed as a pancreatic pseudocyst on abdominal CT scan. This case emphasizes the importance of biopsying the pseudocyst wall at the time of drainage procedure if misdiagnosis is to be avoided. CT scan findings alone can not reliably rule out malignant cystic lesions of the pancreas.     

Surgical management of intraductal papillary mucinous tumor of the pancreas

BACKGROUND: Intraductal papillary mucinous tumor (IPMT) is a type of pancreatic cystic neoplasm. IPMT consists of intraductal papillary mucinous adenoma (benign IPMT) and intraductal papillary mucinous carcinoma (malignant IPMT). Preoperative diagnosis of malignancy is difficult; the invasiveness and metastatic character are not well known. The purpose of the study was to evaluate the optimal diagnostic and therapeutic strategy of IPMT. METHODS: Medical charts of 38 patients with final diagnosis of IPMT in Kyoto University Hospital were retrospectively reviewed. Preoperative imaging, mode of operation, and clinical and histopathologic findings were analyzed. RESULTS: In 38 IPMTs, imaging of localization was correct in 82% by computed tomography, 90% by ultrasonography, 70% by endoscopic retrograde cholangiopancreatography, 100% by magnetic resonance cholangiopancreatography, and 100% by endoscopic ultrasonography. Evaluation of malignancy by endoscopic ultrasonography resulted in sensitivity and specificity of 81% and 78%, respectively. Pylorus-preserving pancreaticoduodenectomy was preferably performed in 20 of 38 patients with IPMT. Twenty-two patients had histologically malignant disease. Half of them had an invasive component in the adjacent stroma. One case of malignant IPMT showed lymph node metastasis, and the patient had no recurrence after pancreaticoduodenectomy with regional lymphadenectomy. No case was diagnosed as margin positive; however, 27% showed a dysplasia with atypia in the epithelial cells of the cut edge of the pancreas. One patient with negative atypia at the cut edge of the pancreas developed a recurrent tumor in the remnant pancreas. CONCLUSIONS: The preoperative diagnosis of malignancy is difficult, and 50% of malignant IPMT showed an invasive component. Thus, radical resection of the pancreas with regional lymph node dissection should be the choice of treatment. Lymph node metastasis and intraductal distant invasion should be carefully managed in the surgical treatment of these lesions.     

Nesidioblastosis with hyperinsulinemic hypoglycemia in adults: Report of two cases

We report herein the cases of two women, aged 34 years and 39 years, respectively, found to have hyperin-sulinemic hypoglycemia after presenting with a history of episodes of temporary loss of consciousness, nausea, and fainting. Under the suspected diagnosis of insulinoma, localization procedures were carried out, but no tumor was found. In both patients, a definite gradient in insulin concentration was found in the pancreas by percutaneous transhepatic or intraoperative portal venous sampling, and a misdiagnosis of insulinoma of the pancreatic body was made. During exploratory laparotomy no tumor was palpable in the pancreas, and intraoperative ultrasonography showed no low echoic mass in the pancreas. A distal pancreatectomy was performed in both patients, and histopathological examination of the resected specimens revealed graded slight hyperplasia of the islet cells.     

Intraoperative ultrasonography of the pancreas in children

In children, lesions of the pancreas often are small, and precise localization is required for optimal surgical management. We have used newer-generation real-time ultrasonography of the pancreas intraoperatively in seven children. Five of these children had hypoglycemia, hyperinsulinemia, and insulinomas; one had a persistent small pancreatic pseudocyst with a disrupted secondary duct, and one had familial pancreatitis with a remarkably enlarged duct and a stone. Two of the five with adenomas had multiple endocrine neoplasia syndrome I (MEN I syndrome); in them, ultrasonography localized several adenomas preoperatively and several additional adenomas intraoperatively. This allowed a 90% pancreatectomy with enucleation of small adenomas in the remaining head. One child had a nonpalpable insulinoma deep in the head of the pancreas; intraoperative ultrasonography localized the lesion and permitted successful enucleation. Another child with a small pseudocyst and a disrupted secondary pancreatic duct ultimately required surgical drainage; intraoperative ultrasonography of the inflammatory mass immediately localized the small pseudocyst and thus decreased the operative time. The child with familial pancreatitis appeared to require a surgical drainage procedure; however, intraoperative ultrasonography demonstrated that the stone had passed spontaneously just prior to operation and the duct size had returned to normal, eliminating the need for the drainage procedure at that time.     

Duodenal-preserving resection of the head of the pancreas and pancreatic head resection with second-portion duodenectomy for benign lesions,low-grade malignancies,and early carcinoma involving the periampullary region

HYPOTHESIS: Duodenal-preserving resection of the head of the pancreas (DPRHP) and pancreas head resection with segmental duodenectomy (PHRSD) can be alternatives to standard pancreaticoduodenectomy for benign periampullary lesions. DESIGN: Retrospective analysis of patients requiring surgery for benign and borderline malignant tumors of the periampullary region. SETTING: Tertiary care referral center. PATIENTS: Duodenal-preserving resection of the head of the pancreas (n = 8) and PHRSD (n = 7) were performed in 15 patients with a preoperative diagnosis of benign and borderline malignant tumors of the periampullary region (ie, 11 pancreas head lesions [2 intraductal papillary mucinous tumors, 4 serous cystadenomas, 2 insulinomas, 1 epidermal cyst, 1 metastatic renal cell carcinoma, 1 nonfunctioning islet cell tumor/parapaillary] and 4 duodenal lesions [3 adenomas and 1 adenocarcinoma]). MAIN OUTCOME MEASURES: Surgical factors (operation time and blood loss), postoperative complication, postoperative pancreatic insufficiency (eg, development of diabetes mellitus and steatorrhea or elevated stool elastase values), weight change, and recurrence of disease. RESULTS: No differences were noted in the mean operation time and estimated blood loss between the 2 procedures. Major postoperative complication constituted the following: bile duct stricture (n = 1) in DPRHP and delayed gastric emptying (n = 1) and postoperative bleeding (n = 1) in PHRSD. Newly developed diabetes mellitus occurred in 1 patient. Exocrine pancreatic insufficiency (steatorrhea) was observed in 1 patient after PHRSD. Patients with early duodenal carcinoma and intraductal papillary mucinous tumors with a borderline malignancy are still alive without evidence of recurrence. There was no hospital or long-term mortality. CONCLUSIONS: Duodenal-preserving resection of the head of the pancreas is recommended first for a benign or low-grade, early malignant pancreatic head lesion; PHRSD can be an option for a lesion of the ampullary-parapapillary duodenal area as well as the pancreatic head. Duodenal-preserving resection of the head of the pancreas can be converted to PHRSD if ischemia of the second portion of the duodenum occurs. We found benign periampullary lesions could be conservatively treated with DPRHP and PHRSD, which could substitute for classic pancreaticoduodenectomy.