Laparoscopic Treatment of Benign Insulinomas Localized in the Body and Tail of the Pancreas: A Single-center Experience

Surgical Pathology, Department of Clinical and Medical Science, University of Padua, Padua, Italy.
World Journal of Surgery (Impact Factor: 2.64). 11/2006; 30(10):1916-9; discussion 1920-1. DOI: 10.1007/s00268-005-0645-1
Source: PubMed


The increasingly widespread use of minimally invasive surgery has allowed surgeons to exploit this approach for complex procedures, such as pancreatic resections, though its actual role outside simple operations remains debated.
This is a study of 12 consecutive patients, 5 men and 7 women, with pancreatic insulinoma who were treated at our institution from 2000 to September 2005. All patients presented with typical symptoms and laboratory findings of hyperinsulinism and were good candidates for laparoscopic surgery. Preoperative diagnostic work-up, operating time, postoperative complication rate, length of hospital stayd and clinical outcome were assessed.
Successful laparoscopic resection was performed in 11 out of 12 patients: 4 had tumor enucleation, and 7 had distal pancreatectomy; among these latter 5 had spleen-preserving distal pancreatectomy. In 1 case conversion to open surgery was necessary. Mean operative time was 170 minutes. The median tumor size was 18 mm, and all the insulinomas were benign. Four complications were observed in this group, and the median hospital stay was 8 days.
The laparoscopic approach proved to be feasible and safe, although the average operative time was longer and demanded good surgical skills as well as precise localization of the tumor and definition of its nature. Tumors located in the body or tail of the pancreas that are benign in nature can better benefit of laparoscopic approach.

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    • "If the tumor cannot be identified precisely by laparoscopic ultrasound, conversion to open surgery should be considered [98]. Laparoscopic pancreatic surgery demands a high level of surgical skills in minimally invasive surgery and should be performed in specialized centers [99]. "
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    ABSTRACT: Pancreatic neuroendocrine tumors (PNETs) are rare neoplasms. They are clinically diverse and divided into functioning and nonfunctioning disease, depending on their ability to produce symptoms due to hormone production. Surgical resection is the only curative treatment and remains the cornerstone therapy for this patient group, even in patients with advanced disease. Over the last decade there has been a noticeable trend towards more aggressive surgery as well as more minimally invasive surgery in patients with PNETs. This has resulted in improved long-term survival in patients with locally advanced and metastatic disease treated aggressively, as well as shorter hospital stays and comparable long-term outcomes in patients with limited disease treated minimally invasively. There are still controversies related to issues of surgical treatment of PNETs, such as to what extent enucleation, lymph node sampling, and vascular reconstruction are beneficial for the oncologic outcome. Histopathologic tumor classification is of high clinical importance for treatment planning and prognostic evaluation of patients with PNETs. A constant challenge, which relates to the treatment of PNETs, is the lack of an internationally accepted histopathological classification system. This paper reviews current issues on the surgical treatment of sporadic PNETs with specific focus on surgical approaches and tumor classification.
    Full-text · Article · Dec 2012 · The Scientific World Journal
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    • "Based on clinical, biochemical, and imaging studies, the patient was referred to a surgical division (F.M. and M.P.) with long-standing experience in the diagnosis and treatment of endocrine pancreatic tumors [2]. Under general anesthesia, the patient underwent laparotomy and surgical exploration of the pancreas; a 10 mm nodule was found where indicated by digital angiography and was enucleated from the pancreatic tail without local complications or bleeding. "
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    ABSTRACT: We describe an unusual case of hypoglycemic syndrome in a 69-year old woman with a proinsulin-only secreting pancreatic endocrine adenoma. The clinical history was highly suggestive of an organic hypoglycemia, with normal or relatively low insulin concentrations and elevated proinsulin levels. Magnetic resonance and computed tomography of the abdomen showed a 1 cm pancreatic nodule and multiple accessory spleens. The diagnosis was confirmed by selective angiography, showing location and vascularization of the nodule, despite no response to intra-arterial calcium. After resection, the hypoglycemic syndrome resolved. The surgical specimen was comprised of a neuroendocrine adenomatous tissue with high proinsulin immunoreactivity. Study of this unusual case of proinsulinoma underlines (i) the need to assay proinsulin in patients with hypoglycemia and normal immunoreactive insulin, (ii) the differential diagnosis in the presence of accessory spleens, (iii) the unresponsiveness to intra-arterial calcium stimulation, and (iv) the extensive evaluation needed to reach a final diagnosis.
    Full-text · Article · Jul 2011 · Case Reports in Medicine
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    ABSTRACT: Background Small size, high benignity rate, and sporadic nature make insulinomas suitable for laparoscopic resection. On the other hand, occult location or multicentricity mandate open surgery. This study was designed to analyze a series of patients who had pancreatic insulinomas and underwent initial treatment at our institution. Methods Clinical records of the 34 patients with pancreatic insulinomas who underwent surgical resection between 1995 and 2007 were reviewed. Main variables for analysis were cure of the disease and surgical complications. Results There were 20 women and 14 men with a mean age of 40 ± 13 years. Mean size of the tumors was 2.2 ± 1 cm. Laparoscopic resection was completed in 14 of 21 patients. Most tumors that were resected by laparoscopy were solitary, benign, and located in the body and tail of the pancreas. Open surgery was selected for 13 patients, including 7 sporadic (5 in the head), 4 related to the MEN syndrome, and 2 malignant tumors. Surgical morbidity occurred in 23 patients. The most common complication was pancreatic fistula (3/13 in open, 4/14 in laparoscopic, and 6/7 in conversions). One patient in the open group died 15 days after surgery from massive PTE. Postoperative normoglycemia was achieved in all patients and persisted for a follow-up period of 4 ± 3.7 years. Conclusions Most insulinomas in our series were small and benign. Tumors that were located in the body and tail were more often amenable for laparoscopic resection. The cure rate was very high. Pancreatic fistula was the most frequent complication.
    Full-text · Article · Sep 2009 · World Journal of Surgery
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