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Biomedical subjects

Gianfranco Silecchia

Publications and source records attributed to Gianfranco Silecchia.

16 recordsLinked to original sources

Effectiveness of laparoscopic sleeve gastrectomy (first stage of biliopancreatic diversion with duodenal switch) on co-morbidities in super-obese high-risk patients.

BACKGROUND: We evaluated laparoscopic sleeve gastrectomy (LSG) on major co-morbidities (hypertension, type 2 diabetes / impaired glucose tolerance, obstructive sleep apnea syndrome (OSAS) and on American Society of Anesthesiologists (ASA) operative risk score in high-risk super-obese patients undergoing two-stage laparoscopic biliopancreatic diversion with duodenal switch (LBPD-DS). METHODS: 41 super-obese high-risk patients (mean BMI 57.3+/-6.5 kg/m(2), age 44.6+/-9.7 years) were entered into a prospective study (BMI > or = 60, or BMI > or = 50 with at least two severe co-morbidities, no Prader-Willi syndrome, no conversion, minimum follow-up 12 months). 9 patients had BMI > or = 60. 17 patients (41.4%) had OSAS on C-PAP therapy. In 10 patients, at least one intragastric balloon had been positioned and 4 had undergone laparoscopic adjustable gastric banding, all with unsatisfactory results. At surgery, 41.5% were classified ASA 4 and 58.5% as ASA 3 (mean ASA score 3.4+/-0.5). Patients underwent evaluation every 3 months postoperatively and were restaged at 12 months and/or before the second step. RESULTS: 60% of major co-morbidities were cured and 24% improved. Average BMI after 6 and 12 months was 44.5+/-8.1 and 40.8+/-8.5 respectively (mean follow-up 22.2+/-7.1 months). After 12 months, 57.8% of the patients were co-morbidity-free and 31.5% had only one major co-morbid condition. At restaging, 20% of patients were still classified as ASA score 4 (OSAS on C-PAP therapy). 3 patients showed BMI <30 and were co-morbidity-free 12 months after LSG. CONCLUSIONS: LSG represents a safe and effective procedure to achieve marked weight loss as well as significant reduction of major obesity-related co-morbidities. The procedure reduced the operative risk (ASA score) in super-obese patients undergoing two-stage LBPD-DS.

Adult↗

Results after laparoscopic adjustable gastric banding in patients over 55 years of age.

BACKGROUND: Laparoscopic adjustable gastric banding (LAGB) has become the most popular bariatric intervention in Europe. International guidelines recommended age limits for bariatric surgery of 18-60 years. The aim of this study was to evaluate the immediate results in morbidly obese patients >55 years old, treated with LAGB. METHODS: Between January 1996 and January 2004, 350 patients underwent LAGB. 24 (6.8%) were >55 years old (Group A), mean age 58.6+/-3.3 years, mean preoperative BMI 42.3+/-4.5 kg/m2. A comparative randomized analysis with 24 patients younger than age 55 years was performed (Group B: mean age 41.2+/-9.6 years, mean BMI 42.1+/-3.6 kg/m2). Baseline clinical features, operative parameters and postoperative results were evaluated. RESULTS: No perioperative complications were recorded. Conversion rate and mortality were nil. Major postoperative complications occurred in 2 patients (8.3%) from Group A (1 intragastric prosthesis migration, 1 pouch dilatation) and 2 patients (8.3%) from Group B (intragastric migrations). Reoperation was needed in 3 cases, and one erosion (Group B) is on the waiting list for removal. Minor complications: 1 port infection in each group required ambulatory port substitution; 1 intraperitoneal portcatheter disconnection (Group B) was successfully treated laparoscopically. Mean follow-up was 31.7 months (Group A) and 33.0 months (Group B). Mean postoperative BMI at 12 and 24 months was 35.9+/-4.2 and 33.8+/-4.9 for Group A, and 33.8+/-4.6 and 33.2+/-6.0 for Group B. CONCLUSION: There have been no significant differences in results between the 2 groups. LAGB has been safe and effective in patients >55 years old.

Adult↗

Prevalence of cancer in Italian obese patients referred for bariatric surgery.

BACKGROUND: An association between obesity and cancer has been shown in large epidemiological studies. The aim of this study was to evaluate the prevalence and types of malignancies in an Italian cohort of obese patients referred to a bariatric center. METHODS: A retrospective, observational study was conducted. Between Jan 1996 and Dec 2004, 1,333 obese patients (M=369, F=964) were seen in the center for minimally invasive treatment of morbid obesity. Morbid obesity were considered as BMI >40 kg/m(2) or BMI >35 kg/m(2) with at least one co-morbidity. Obese and morbidly obese patients who suffered any form of cancer were reviewed. RESULTS: 43 patients (3.2%) presented various malignancies, with 88.3% in females. The prevalence of cancer in the younger group (21-46 years) was higher than in the older group (47-70 years), 2.1% vs 1.1%. 26 obese patients out of the 43 (60.5%) (age 41+/-7.9 years, BMI 38.2+/-9.9) presented hormone-related tumors. The most frequent site of cancer was breast (20.9%), followed closely by thyroid. CONCLUSION: This is the first Italian report on prevalence of cancer in a homogeneous obese population attending an academic bariatric center. The morbidly obese patients appear to have a higher risk of developing cancer, with a higher prevalence of hormone-related tumors. The predominant gender affected by both obesity and cancer was female. Thus, a preoperative work-up for cancer screening is indicated in this group of patients.

Adolescent↗

Role of a minimally invasive approach in the management of laparoscopic adjustable gastric banding postoperative complications.

HYPOTHESIS: Complications after laparoscopic adjustable gastric banding as treatment for morbid obesity may require a major reintervention. A minimally invasive approach represents an attractive management alternative for such complications. DESIGN: Prospective case series. SETTING: Major academic medical and surgical center. PATIENTS: From January 1996 to July 2003, 47 patients who had undergone laparoscopic adjustable gastric banding were operated on again. Considering the causes for reoperation, the patients were divided into 4 groups: group A had major complications (n = 26); group B, minor complications (n= 11); group C, psychological problems (n=6); and group D, insufficient weight loss (n=4). INTERVENTIONS: Forty-three procedures, 38 using general anesthesia (groups A, C, and D) and 5 using local anesthesia (group B), were performed. MAIN OUTCOME MEASURES: Feasibility, safety, and effectiveness of a minimally invasive approach in the treatment of laparoscopic adjustable gastric banding complications. RESULTS: In group A, 9 of 10 patients with irreversible gastric pouch dilatation and 15 of 16 with intragastric band migrations were treated laparoscopically. In group B, 5 ports were substituted and 2 reconnections of the catheter-port system were performed. In group C, 6 laparoscopic band removals were carried out. In group D, 4 laparoscopic revision procedures for insufficient weight loss were performed. The operative mortality was nil. The most frequent cause of reoperation was intragastric migration (37.2%). A minimally invasive approach was adopted in 94.7% of cases. CONCLUSION: Laparoscopy is safe and effective, even as a second operative procedure.

Adult↗

Laparoscopic splenectomy: multi-detector row CT for preoperative evaluation.

PURPOSE: To prospectively evaluate multi-detector row spiral computed tomography (CT) for determination of splenic volume, splenic vascular anatomy, and presence of accessory spleens and parenchymal lesions in patients who were undergoing laparoscopic splenectomy. MATERIALS AND METHODS: Twenty-two patients who were candidates for laparoscopic splenectomy underwent multiphasic multi-detector row CT. Two observers evaluated splenic volume with two hand-tracing editing modalities. Variability between the two observers was calculated with a reliability coefficient (Cronbach alpha). A linear regression equation for each modality was generated to identify the correlation between the two observers. Multi-detector row CT angiography was evaluated for assessment of splenic vascular anatomy. Presence and number of both accessory spleens and parenchymal lesions were recorded. RESULTS: Mean splenic volume was 1,050 and 1,046 mL, respectively, for observers A and B by using each-section editing (technique 1) and 1,067 and 1,068 mL for observers A and B by using distanced editing (technique 2). For each editing modality, alpha reliability coefficient was higher than 0.99. Both techniques 1 and 2 were very highly predictive of specimen weight and had R2 values of greater than 0.99 (P <.001). CT angiograms correctly showed polar arteries in all cases and the presence of the arteria pancreatica magna in one case. Multi-detector row CT demonstrated the presence, number, and size of all accessory spleens and of focal parenchymal lesions. CONCLUSION: Multi-detector row CT volumetric and anatomic evaluation provided accurate and reproducible information.

Adult↗

Accuracy of laparoscopy in the diagnosis and staging of lymphoproliferative diseases.

Laparoscopy seems to be playing an emerging role in the management of lymphoproliferative diseases. The aim of this study was to prospectively analyze personal experience evaluating the role and limits of laparoscopy in the management of lymphomas. From July 1993 to December 2000, 131 consecutive patients were referred to our institution for primary diagnosis (group A, n = 70), suspected relapse (reassessment) (group B, n = 54), or staging/restaging of lymphoproliferative diseases (group C, n = 7). Diagnostic and/or operative laparoscopy was performed in all patients. To assess the accuracy of laparoscopy, the results were analyzed according to the indications for surgery. In all, 128 procedures were completed laparoscopically (95.5%). Conversion was required in 7 cases (5.1%). Causes of the conversions were severe obesity (body mass index 62.5), uncontrolled intraoperative bleeding (HIV+), nondiagnostic tissue sampling (2 cases), perisplenic inflammation and perisplenic abscesses (3 cases). The results of this study highlight the safety of diagnostic and staging laparoscopy and laparoscopic splenectomy in patients with lymphoproliferative diseases (major complications 2.9%, perioperative mortality 0%). In all, 96.4% of patients from group A and 100% of patients from group B were treated on the basis of laparoscopic findings. No false negative diagnosis occurred. Laparoscopy may become the "gold standard" in the management of lymphoproliferative disease in the following settings: for the differential diagnosis of hepatic and/or splenic focal lesions; when percutaneous needle biopsy fails and/or genetic analysis is needed for therapeutic decision; for the primary diagnosis and abdominal staging of patients with diffuse retroperitoneal lymphadenopathy in the absence of peripheral lymphadenopathy; for cases of abdominal restaging after concurrent chemoradiotherapy and in cases of suspected relapse when percutaneous biopsy is not technically possible; and for patients with lymphoproliferative disease when splenectomy is required. Marked splenomegaly with perisplenic inflammatory reaction and lymphadenopathy in HIV+ patients should be considered possible causes of failure of the laparoscopic approach.

Adult↗

Laparoscopic splenectomy for ruptured spleen: lessons learned from a case.

Splenic rupture is a frequent consequence of blunt abdominal trauma. When nonsurgical management is not indicated, splenic rupture is usually an emergency requiring surgery. Removal of the spleen (splenectomy) or alternative conservative procedures (splenorraphy, partial splenectomy, and hemostatic collagen application) are surgical treatment options. Recently, laparoscopic conservative techniques have been proposed. Laparoscopic splenectomy for a ruptured spleen has been reported only in a single case, in which a hand-assisted technique was used. We present the first reported case, to our knowledge, of successful removal of a ruptured spleen by means of a totally laparoscopic technique. Adequate technical instrumentation, such as the endostapler, harmonic scalpel, and red cell-saving machine, in addition to extensive experience with routine splenectomy, were essential factors to ensure a safe and effective procedure.

Accidents, Traffic↗

Different plasma ghrelin levels after laparoscopic gastric bypass and adjustable gastric banding in morbid obese subjects.

Gastric bypass has been reported to be associated with markedly suppressed plasma ghrelin levels, suggesting that it is one of the possible weight-reducing factors related to this procedure. The aim of this study was the evaluation of plasma ghrelin levels in patients who had undergone laparoscopic Roux-en-Y gastric bypass (LRYGBP) and laparoscopic adjustable silicone gastric banding (LASGB). Normoweight, obese subjects and patients who had undergone total gastrectomy were used as controls. In this cross-sectional study, we selected 10 subjects who underwent LASGB, 11 subjects with LRYGBP, 10 obese subjects, eight patients with total gastrectomy, and eight normoweight subjects. Plasma ghrelin, insulin, and glucose profiles were determined before and after breakfast and lunch. Obese subjects showed a ghrelin plasma level significantly lower than normoweight subjects (407.3 +/- 21.6 vs. 813 +/- 72.4 pg/ml, P < 0.01). Patients with LRYGBP showed baseline ghrelin levels lower than LASGB (213.5 +/- 73.9 vs. 314.2 +/- 84.3 pg/ml, P = 0.04). Both groups of patients who underwent bariatric surgical procedures also had ghrelin lower than normoweight and obese subjects (P < 0.01 and P < 0.05, respectively). Patients with total gastrectomy showed plasmatic ghrelin levels extremely lower than those in all other groups (32.6 +/- 18.7 pg/ml, P < 0.001 for all). The ghrelin profile in both groups of subjects who underwent LRYGBP and LASGB did not show any meal-related changes as observed in obese and normoweight control groups. Significant difference in plasma ghrelin levels between LRYGBP and LASGB was found, suggesting that both procedures could induce weight loss by different mechanisms in which ghrelin could be involved.

Adipose Tissue↗

Relationship between plasma free fatty acids and uncoupling protein-3 gene expression in skeletal muscle of obese subjects: in vitro evidence of a causal link.

OBJECTIVE: To investigate whether skeletal muscle uncoupling protein-2 (UCP2) and uncoupling protein-3 (UCP3) gene expression is altered in massive obesity and whether it correlates with in vivo insulin sensitivity and with metabolic and hormonal status. DESIGN: Quantification of UCP2 and UCP3 gene expression in skeletal muscle of obese and lean subjects displaying different degrees of insulin sensitivity. PATIENTS: Fourteen obese and 10 age- and sex-matched healthy control subjects with a mean body mass index (BMI) of 43.6 +/- 1.4 and 22.8 +/- 1.8 (+/- SEM), respectively. MEASUREMENTS: Insulin sensitivity by glucose clamp, body composition by bio-impedance, fasting plasma glucose, insulin, leptin and free fatty acids (FFA). Skeletal muscle UCP2 and UCP3 mRNA levels by quantitative reverse transcription polymerase chain reaction (RT-PCR). RESULTS: No significant differences in UCP2 or UCP3 mRNA levels were found between obese and control subjects. No significant correlation was observed, in both groups, between UCP2 or UCP3 mRNA levels and both anthropometrical and metabolic parameters. In contrast, a highly significant correlation was observed between skeletal muscle UCP3, but not UCP2, mRNA levels and plasma FFA in the obese, but not in the lean, group. Furthermore, exposure of human myocytes to FFA for 24 h strongly induced both UCP3 and peroxisome proliferator-activated receptor-gamma (PPARgamma) but not UCP2 gene expression. CONCLUSIONS: FFA levels correlate strongly with skeletal muscle UCP3 mRNA levels in obese, but not in lean, subjects; in addition, in human myocytes, high FFA concentrations promote UCP3 expression. Our studies therefore provide evidence that supports a role for increased plasma FFA concentrations in the regulation of human skeletal muscle UCP3 gene expression.

Adult↗

Virtual gastroduodenoscopy: a new look at the bypassed stomach and duodenum after laparoscopic Roux-en-Y gastric bypass for morbid obesity.

BACKGROUND: After open or laparoscopic Roux-en-Y gastric bypass (RYGBP) for morbid obesity, the bypassed stomach and duodenum are not readily available for radiological and endoscopic evaluation. Furthermore, little is known about the long-term physiologic and histologic changes that occur in the bypassed GI segments following these procedures. Many alternative radiological and endoscopic techniques have been described to access the distal gastric pouch and the duodenum after RYGBP. Apart from percutaneous gastrografin studies, all these techniques require the insertion of a gastrostomy tube in the distal stomach. METHODS: A new diagnostic method to access the bypassed segments by virtual CT gastroscopy (VG) was used in 5 morbidly obese patients who underwent laparoscopic RYGBP (LRYGBP). RESULTS: All patients tolerated the procedure well, which appears safe and suitable for an outpatient setting. The virtual images offered an excellent intraluminal view of the stomach and duodenum. CONCLUSIONS: VG holds promise as the method of choice in the follow-up of LRYGB patients, having the potential to detect inflammatory changes and cancer in the excluded segments early.

Adult↗

Modifications of metabolic and cardiovascular risk factors after weight loss induced by laparoscopic gastric banding.

BACKGROUND: The well-known inverse relation between life expectancy and BMI, particularly in morbid obesity, is presumably in large part due to multiple cardiovascular and metabolic comorbidities. Severely obese patients treated with laparoscopic adjustable silicone gastric banding (LASGB) were evaluated for such risk factors before and 1 year after LASGB. METHODS: 130 individuals (age 20-66, BMI 34-59 kg/m2) who underwent LASGB between 1996 and 2000 were studied; 50 of them were available for reevaluation 12 months after surgery. The presence and severity of diabetes (DM), hypertension (HTN), hypercholesterolemia (HC) and hypertriglyceridemia (HT) were assessed before and after surgery. In 18 of them erythrocyte sedimentation rate (ESR) were also measured. RESULTS: Comorbidities were highly prevalent at the initial evaluation: DM 10%, HTN 32%, HC 37%, HT 27%. In the subgroup reevaluated after surgery, prevalence of DM decreased from 15% to 6%, HTN from 37% to 25%, HC from 36% to 25%, and HT from 29% to 13%, with an average BMI loss from 44.1 to 35.9. ESR decreased from a preoperative value of 36.7 +/- 22.6 mm/hr to 18.3 +/- 11.9 mm/hr at 1 year (p < 0.001). CONCLUSION: Morbidly obese subjects respond to LASGB with an impressive reduction of comorbidities which is sustained for at least 1 year, well after the initial acute negative energy balance and when weight tends to stabilize. The high prevalence of elevated ESR, which has been considered a strong predictor of coronary mortality, confirms previous reports of its association with obesity, and the clear tendency to normalization with weight loss may represent a further element contributing to lower morbidity.

Adult↗

[Laparoscopic splenectomy: analysis of 60 consecutive cases].

The purpose of the study was to analyze the results of 60 patients who were candidates for laparoscopic splenectomy. Over the period from May 1994 to May 2001, 60 patients were candidates for splenectomy. Laparoscopy was contraindicated in 3 cases because of ASA III and marked splenomegaly (2 cases) and previous gastric resection (1 case). The procedure was indicated for benign disease in 38 cases and for malignant disease in the remainder. Fifty-three procedures were completed laparoscopically (92.9%). Conversion proved necessary in 4 patients (6.7%) due to large incisional hernia, perisplenic abscess, bleeding of major splenic vessels at the hilum and marked splenomegaly (2 cases of lymphoma). The mean operative time was 200 min for the malignancies and 110 min for the benign conditions (P < 0.05). Major morbidity occurred in 5 cases (8.7%). No deaths were registered. The mean postoperative hospital stay was 7.5 days for patients with malignancies and 5.2 days for patients with benign disease (P < 0.05). Laparoscopic splenectomy was safe and effective in patients with benign disease, even in cases of marked splenomegaly. The morbidity rate was significantly higher in lymphoma patients than in patients with benign haematological disorders.

Adolescent↗

Laparoscopic cholecystectomy and incidental carcinoma of the extrahepatic bilary tree.

BACKGROUND AND OBJECTIVES: Gallbladder carcinoma is found in 0.2% to 5% of patients undergoing cholecystectomy, and gallstones are found in 70% to 98% of patients with gallbladder carcinoma. Early diagnosis of carcinoma is difficult because of the absence of specific symptoms and the frequent association with chronic cholecystitis and gallstones. At present, laparoscopic cholecystectomy is the gold standard for the surgical treatment of symptomatic cholelithiasis and other benign gallbladder diseases. The aims of this study were to evaluate retrospectively the incidence of occasional and occult gallbladder carcinomas to ascertain the effect of laparoscopy on diagnosis and treatment of unexpected extrahepatic biliary tree carcinomas and to assess possible guidelines that can be taken into consideration when the problem is encountered. METHODS: Clinical records of 3900 patients undergoing laparoscopic cholecystectomy were reviewed. Patients with occasional (intraoperative = Group A) or occult (postoperative = Group B) diagnosis of gallbladder or common bile duct carcinoma entered the study group. Follow-up data were obtained in June 2000. RESULTS: A total of 14 patients (0.35%), 3 men and 11 women, mean age 60.8 years (range 37 to 73) with extrahepatic biliary tree carcinoma were found. Occasional carcinomas occurred in 8 patients, occult carcinomas in 6. No deaths occurred in either group. The overall survival at mean follow-up of 30.5 months is 50%. Five patients are disease free, and 2 are alive with evidence of recurrence. DISCUSSION: In 2 large series of unselected consecutive laparoscopic cholecystectomy, only 14 unsuspected malignant tumors of the extrahepatic biliary tree were found (0.35%). The limits of the preoperative workup and the difficult diagnosis of biliary tract carcinoma during laparoscopic cholecystectomy, has led to the present retrospective study and several significant recommendations.

Adult↗

[Antibiotic prophylaxis in laparoscopic cholecystectomy: from empiricism to evidence. Review of the problem and proposal of a randomized trial of the Lap Group Roma].

More than 10 years after its appearance in clinical practice, laparoscopic cholecystectomy can now be considered the standard operation for gallstone disease. However, some aspects of this operation are still debated. The need to perform routine antibiotic prophylaxis in order to reduce the incidence of infectious complications is still a matter of controversy. International guidelines do not recommend its routine use. The evidence for this, however, is rather limited, because there are no randomized trials with a sufficient number of cases to avoid a type II error. The authors, on behalf of the Lap Group Roma, introduce the protocol of a multicenter prospective randomized controlled clinical trial designed to find a definitive answer to this problem.

Antibiotic Prophylaxis↗

Laparoscopic splenectomy in the management of benign and malignant hematologic diseases.

OBJECTIVES: The use of laparoscopy to treat malignant hematological diseases is not completely accepted. Our aim was to analyze operative and postoperative results of laparoscopic splenectomy performed for benign versus malignant hematological disorders. METHODS: Between 1994 and 2003, 76 consecutive patients underwent laparoscopic splenectomy. The first 38 cases were performed by using an anterior approach, whereas in the remaining 38 cases a semilateral position was used. RESULTS: Baseline characteristics showed that patients with malignant diseases were significantly older (56.9 vs 32.6 years, P < 0.001). Seventy-two (94.7%) procedures were completed laparoscopically. Conversion was required in 4 cases (5.2%). Mean operative time was 138.5 minutes for benign and 151.0 minutes for malignant diseases, (P > 0.05, ns). The hand-assisted technique was used in 3 patients with massive splenomegaly. Pathologic features showed that spleen volume was higher in patients with malignant diseases (mean interpole diameter 18.1 cm vs 13.7 cm, P < 0.001). Massive splenomegaly (interpole diameter over 20 cm, weight over 1000 g) was present in 13 patients (17.1%); 9 had malignant diseases. Overall perioperative mortality was 1.3% and major postoperative complications occurred in 6 patients (7.8%). Postoperative splenoportal partial thrombosis was identified in 9.7% of patients. CONCLUSIONS: Laparoscopic splenectomy is a well-accepted, less-invasive procedure for hematological disorders. Neoplastic diseases or splenomegaly, or both, do not seem to limit the indications for a minimally invasive approach after the learning curve.

Adolescent↗

The Italian Registry of Laparoscopic Surgery of the Spleen (IRLSS) A retrospective review of 379 patients undergoing laparoscopic splenectomy.

In December 2000, the Italian Registry of Laparoscopic Surgery of the Spleen (IRLSS) was formally launched under the auspices of the Italian Society for Endoscopic Surgery and New Technologies (SICE). The aim of this multicentre study was to analyse various aspects of the treatment that are still under discussion, such as the extension of the laparoscopic indications in cases of malignancy, independently of the associated splenomegaly, patient selection and operative techniques. A retrospective review of 379 patients undergoing laparoscopic splenectomy for haematological diseases from February 1, 1993, to September 15, 2005, was conducted. Data were collected from the 18 italian centres participating in the IRLSS. The mean length of surgery was 140 minutes (range: 25-420). Conversion was necessary in 25 cases (6.6%), and at least one accessory spleen was found in 30 patients (8%). The mean spleen weight was 1200 g (range: 85-4500). Perioperative death occurred in two cases (0.5%). There were no complications in 312 patients (82.3%), with a mean hospital stay of 5.5 days (range: 2-30). Morbidity occurred in 67 patients (17.8%), mainly consisting in transient fever (n = 22), pleural effusions (n = 16), and actual or suspected haemorrhage (n = 14), requiring re-intervention in 7 patients. This first study carried out on the IRLSS data shows that laparoscopic splenectomy may constitute the gold standard for haematological diseases with a normal-sized spleen. The low morbidity and mortality rates suggest that laparoscopic splenectomy can be successfully proposed also for splenomegaly in haematological malignancies.

Adolescent↗