Publications by authors named "Ravaioli M"

Background: Pancreatic carcinoma frequently infiltrates the portal vein or the superior mesenteric vein; pancreatectomy combined with portal vein/superior mesenteric vein resection represents a potentially curative treatment in these cases but is still a controversial procedure.

Methods: After performing a computerized Medline search, 12 series published during the last 8 years were selected, enrolling 399 patients who underwent pancreatectomy combined with portal vein/superior mesenteric vein resection for pancreatic carcinoma. Data were examined for information about indications, operation, adjuvant therapies, histopathology of resected specimens, perioperative results, and survival.

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Objective: To produce a model indicating the extent of hepatectomy for hepatocellular carcinoma on cirrhosis based on easily available preoperative data.

Design: Retrospective study based on multicenter prospectively updated databases.

Setting: Two tertiary referral centers specializing in hepatobiliary surgery.

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Background/aims: Patients with hepatocellular carcinoma on the waiting list for liver transplantation are excluded due to causes related to liver failure and tumor progression. We analyze the various factors to suggest a new liver transplant priority.

Methodology: We evaluated the outcome on the list of 309 patients with hepatocellular carcinoma and causes of drop-out from the list were divided as death, "too sick" and tumor progression.

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According to transplant registries, grafts from elderly donors have lower survival rates. During 1999-2005, we evaluated the outcomes of 89 patients who received a liver from a donor aged > or = 60 years and managed with the low liver-damage strategy (LLDS), based on the preoperative donor liver biopsy and the shortest possible ischemia time (group D > or = 60-LLDS). Group D > or = 60-LLDS was compared with 198 matched recipients, whose grafts were not managed with this strategy (89 donors < 60 years, group D < 60-no-LLDS and 89 donors aged > or =60 years, group D > or = 60-no-LLDS).

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The presence of cirrhosis is the only risk factor that is advocated for recurrence of hepatocellular carcinoma (HCC) 2 years after hepatic resection compared with noncirrhotic control subjects; however, data for cohorts of exclusively patients with cirrhosis are lacking. This study was designed to assess risk factors and annual incidence of early (<2 years) and late (>2 years) recurrence after resection of cirrhosis and to compare these findings with those of patients with cirrhosis enrolled in HCC surveillance programs (HCC occurrence). Data from 204 patients with cirrhosis resected for HCC and 150 surveilled for cirrhosis were retrospectively collected and compared using propensity score matching to overcome biases of nonrandomized study.

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Objective: We assessed the effect of tacrolimus on recurrence of hepatocellular carcinoma (HCC) after liver transplantation (LT) and compared it with that of the other calcineurin inhibitor, cyclosporine.

Introduction: HCC recurrence after LT can be favored by overexposure to cyclosporine. Tacrolimus is now the most widely used main immunosuppressant after LT; its possible effect on HCC recurrence has never been investigated.

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Small bowel transplantation can be associated with large fluid shifts due to massive blood loss, dehydration, vascular clamping, long ischemia times, intraoperative visceral exposure, intestinal denervation, ischemic damage, and lymphatic interruption. Fluid management is the major intra- and postoperative problem after small bowel and multiple organ transplantation, because of the highly variable fluid and electrolyte needs of the transplant recipient. Third-space fluid requirements can be massive; inadequate replacement leads to end-organ dysfunction, particularly renal failure.

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Background: The use of the Model for End-stage Liver Disease (MELD) score to prioritize patients on liver waiting lists and to share organs among centers was effective according to US data, but few reports are available in Europe.

Materials And Methods: We evaluated the outcome of 887 patients listed between April 2004 and July 2006 in a common list by two transplant centers (University of Bologna [BO] and University of Modena [MO] ordered according to the MELD system. Patients with hepatocellular carcinoma had a score calculated according to their real MELD, tumor stage, and waiting time.

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Introduction: In our clinical context, there are two groups that practice blood purification treatments on acute or chronic liver failure (AoCLF) patients: one group used MARS (molecular adsorbent recirculating system) and the other Prometheus.

Materials And Methods: The MARS group used the lack of response to standard medical treatment after 72 hours of observation as the access criterion. The Prometheus group used the access criteria of the multicenter Helios protocol for patients in AoCLF, as well as those with primary nonfunction (PNF) and secondary liver insufficiency.

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Background: We sought to determine the best strategy to overcome difficult abdominal wall closures in intestinal transplantation (ITx).

Methods: Among 38 adult recipients of 39 ITxs from deceased donors, the median number of previous laparotomies was 2.0 per patient, with a median donor-to-recipient body weight ratio of 1.

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Background: Treatment of hepatitis C virus (HCV) recurrence after liver transplantation (LT) is difficult with low response rates.

Aim: To assess the safety and efficacy of pegylated-interferon (PEG-IFN) alfa-2b + ribavirin (RBV) in patients with post-LT recurrent genotype-1 HCV and to establish stopping rules according to response.

Methods: Fifty-three patients with post-LT HCV recurrence were enrolled.

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Liver resection (LR) for patients with small hepatocellular carcinoma (HCC) with preserved liver function, employing liver transplantation (LT) as a salvage procedure (SLT) in the event of HCC recurrence, is a debated strategy. From 1996 to 2005, we treated 227 cirrhotic patients with HCC transplantable: 80 LRs and 147 LTs of 293 listed for transplantation. Among 80 patients eligible for transplantation who underwent LR, 39 (49%) developed HCC recurrence and 12/39 (31%) of these patients presented HCC recurrence outside Milan criteria.

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Advanced donor age is a risk factor for poor outcome in liver transplantation (LT). We reviewed 553 consecutive transplants according to donor age categories [group 1 (n = 173): <50 years; group 2 (n = 96): 50-59 years; group 3 (n = 132): 60-69 years; group 4 (n = 111): 70-79 years; group 5 (n = 41): > or =80 years]. Clinical parameters were comparable between groups.

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Hypothesis: Several techniques have been introduced to minimize intraoperative bleeding in hepatic surgery. Ischemia-reperfusion injuries and intestinal congestion are the main drawbacks of vascular clamping. We hypothesized possible negative effects on early postoperative outcomes associated with different types of vascular clamping during liver resections and evaluated how attitudes have changed in the past 20 years.

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Objectives: To evaluate correlations between exposure to wood dust, upper airways symptoms and lung function.

Methods: We have analysed medical surveillance reports of 197 woodworkers with a median wood dust TWA exposure of 2.1 mg/m3.

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Laparoscopic adrenalectomy is now regarded as the procedure of choice for most adrenal glands presenting surgical pathology. The primary adrenal-specific contraindication to laparoscopic adrenalectomy today is the presence of a large adrenal mass with evidence of local infiltration or venous invasion. We used our multicentre experience to compare the transperitoneal (TLA) and retroperitoneal (RLA) minimally invasive approaches.

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Since 2001 we have conducted a prospective randomised study of right laparoscopic-assisted hemicolectomy vs open right hemicolectomy for right colon cancer in order to assess the differences in intraoperative and postoperative results as well as oncological clearance. Thirty-three patients with right colon cancer received laparoscopic-assisted right hemicolectomy (LRH) and were compared with 33 patients who underwent open right hemicolectomy (ORH). We analysed morbidity and mortality, number of postoperative days of starving, postoperative days tolerating a liquid diet and a soft diet, duration of postoperative ileus, as well as the distance of the resection margin from the tumour (< 5 cm or >5 cm), and the number of lymph nodes found in the resected specimen.

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Liver resections are usually considered the treatment of choice for colorectal and neuroendocrine metastases. Recently, the morbidity and mortality rates for liver surgery have dramatically decreased. Therefore, hepatic resection has been applied in selected cases of non-colorectal, non-neuroendocrine hepatic metastases.

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We report a case of a 36-year-old man who was admitted to the Emergency Department with right flank pain. The clinical presentation was suggestive of renal colic. However, a computed tomography scan showed the presence of a foreign body in the inferior duodenal flexure.

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