Mladen Radić

The role of nonenhanced magnetic resonance imaging in the early assessment of acute pancreatitis.

BACKGROUND AND AIMS:Computed tomography (CT), especially contrast-enhanced CT (CECT), provides important information on the severity and prognosis of acute pancreatitis (AP). Magnetic resonance imaging (MRI) has become a useful tool as an alternative to CT in the assessment of AP. The primary aim of our study was to determine the diagnostic value of nonenhanced MRI (NEMRI) to assess severity and predict outcome in patients with AP from the third to fifth day after admission. We also correlated MRI findings with CT and biochemical parameters.PATIENTS AND METHODS:The study included 101 patients (49 men, 52 women, median age 62 yr, range 20–82) with a diagnosis of AP admitted to our hospital between January 1, 2004 and June 31, 2005. The inclusion criteria consisted of a combination of clinical features, a typical case history, elevation of serum pancreatic enzymes, and diagnosis confirmed by imaging studies. Contrast-enhanced spiral CT exams were performed in all patients from the third to fifth day after admission, and Balthazar grade and CT severity index were calculated. All patients underwent NEMRI, and MR severity index (MRSI) was calculated. We also performed magnetic resonance cholangiopancreatography (MRCP) in all patients to detect bile duct lithiasis.RESULTS:Significant correlation between CECT and NEMRI was found for Balthazar grade (P < 0.001) and the assessment of pancreatic necrosis (P < 0.001), as well as between the combined severity indices (ρ = 0.819, P < 0.001). MRSI correlated with Ranson score (ρ = 0.656, P < 0.01), C-reactive protein (CRP) levels 48 h after admission (ρ = 0.502, P < 0.01), appearance of systemic complications (ρ = 0.576, P < 0.01), and length of hospital stay (ρ = 0.484, P < 0.01). Considering the Atlanta criteria as the gold standard and the Ranson score, no difference in sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of the two methods was observed. Comparing the group of patients with presumed acute pancreatic hemorrhage with the group of patients with severe AP, we found a significantly higher APACHE II score on the first day (P < 0.05), that the development of systemic complications was more frequent (P < 0.05), and that the hospital stay and ICU management of patients with MRI signs of pancreatic hemorrhage tended to be longer.CONCLUSION:NEMRI is comparable to CECT in the early assessment of the severity of AP, and both methods are equally efficient in predicting local and systemic complications of AP. MRI has a potential advantage over CT in detecting bile duct lithiasis and pancreatic hemorrhage.

Epidemiology of Acute Pancreatitis in the North Adriatic Region of Croatia during the Last Ten Years.

Introduction. Several European studies have reported an increase in the incidence rate of acute pancreatitis (AP). Therefore, we studied the incidence rate of AP in the North Adriatic Region in Croatia, as well as epidemiological analysis concerning etiology, age, gender, and severity of disease. Methods. We analyzed 922 patients with confirmed diagnosis of AP (history, clinical and laboratory findings, and imaging methods) admitted to our hospital during a ten-year period (2000–2009). Epidemiological analysis was carried out focusing on incidence, demographic data, and etiology, as well as severity of the disease based on the Ranson and APACHE II scores. Results. The incidence rate varied from 24 to 35/100 000 inhabitants annually. Mean age was 60 ± 16 years. There were 53% men and 47% women among the patients. Most frequent etiologies of AP were biliary stones in 60% and alcohol abuse in 19% of patients. According to the Ranson and APACHE II scores, pancreatitis was considered to be severe in 50% and 43% of the cases, respectively. Conclusion. In our region the incidence of AP was around 30 per 100,000 population per year during the ten-year period studied. The mean age at admission was 60 years and etiology was predominantly biliary. In our region, we have shown epidemiological characteristics of AP typical for Mediterranean countries.

Nonalcoholic fatty liver disease (NAFLD) - a new cardiovascular risk factor in peritoneal dialysis patients

♦ Background: Recent investigations indicated that nonalcoholic fatty liver disease (NAFLD), a hepatic component of metabolic syndrome (MS), is associated with an increased risk of cardiovascular disease (CVD). Accordingly, we were interested in exploring the frequency of NAFLD in peritoneal dialysis (PD) patients and analyzing factors in PD patients associated with NAFLD occurrence. In addition, we were interested in investigating whether NAFLD is associated with higher CVD risk in our PD patients. ♦ Methods: In the present cross-sectional study, we analyzed 58 PD patients. The controlled attenuation parameter (CAP) was used to detect and quantify liver steatosis with the help of transient elastography (TE) (FibroScan, Echosense SA, Paris, France). A carotid ultrasound was performed in all patients to measure carotid intimae media thickness (IMT) and plaque as surrogate measures of increased CVD risk, and we investigated their association with NAFLD. ♦ Results: Nonalcoholic fatty liver disease was present in 74.1% of PD patients. Peritoneal dialysis/nonalcoholic fatty liver disease patients had statistically greater daily (136.5 ± 62.6 vs 93.6 ± 36.1; p = 0.02) and monthly (4,095.3 ± 1,877.7 vs 2,806.6 ± 1,083.2; p = 0.02) glucose load in comparison to the non-NAFLD/PD patients. In the next step, we were interested in analyzing what demographic and clinical characteristics in our PD patients are associated with a higher NAFLD occurrence. Presence of diabetes mellitus (DM), arterial hypertension (AH), dyslipidemia, body mass index > 25 kg/m2, and daily glucose load > 100 g were associated with NAFLD occurrence. Peritoneal dialysis patients with NAFLD showed more carotid atherosclerosis than PD patients without NAFLD. In addition, CAP values (as indicator of liver steatosis) showed strong positive association with IMT (r = 0.801; p < 0.0001). Nonalcoholic fatty liver disease was a strong predictor of carotid atherosclerosis in PD patients. ♦ Conclusion: Nonalcoholic fatty liver disease is highly prevalent in PD patients. Peritoneal dialysis patients with NAFLD are at high risk of atherosclerosis. Assessment of NAFLD in PD patients may be helpful for CVD risk stratification.

Impact of Nutritional Support in Patients with Gastrointestinal Malignancies - A Review

Cancer Cachexia-Anorexia Syndrome (CACS) is a common and often underdiagnosed syndrome in cancer population. If undiagnosed, this initially reversible syndrome leads to deterioration and is direct cause of death in 20% of cancer patients. Oppositely, with timely diagnosis, nutritional counseling can help to slow the progression and positively influence on quality of life, tolerance to chemotherapy with ultimate goal of prolonging patient’s life. Colorectal and pancreatic cancers are very common tumors type worldwide. The prognosis for the survival in pancreatic cancer is poor as in colorectal after disease progression. Cancer anorexia-cachexia syndrome is highly prevalent among patients with colorectal and pancreatic cancer, and has a large impact on morbidity and mortality, and on patient quality of life. The etiology of primary CACS appears to be related to the pathological loss of inhibitory control of catabolic pathways, whose increased activities are not counterbalanced by the increased central and peripheral anabolic drive. Secondary CACS (related to gastrointestinal obstruction, vomiting due to chemotherapy etc.) is contributing to bad patient’s condition. As a result of being complex and influencing a great number of metabolic pathways, cancer cachexia can be treated in multimodal manner. In this review we are presenting most promising targets and current opinions in ways to treat cachexia and our results with nutritional supplementation in colorectal and pancreatic cancer patients.