TRANSHIATAL ESOPHAGECTOMY IN SQUAMOUS CELL CARCINOMA OF THE ESOPHAGUS: WHAT ARE THE BEST INDICATIONS?

Background: Overall survival in patients who underwent transhiatal esophagectomy submitted or not to neoadjuvant therapy. Southern Brazil has one of the highest incidences of esophageal squamous cell carcinoma in the world. Transthoracic esophagectomy allows more complete abdominal and thoracic lymphadenectomy than transhiatal.

Atorvastatin for high-risk statin-naïve patients undergoing noncardiac surgery: The Lowering the Risk of Operative Complications Using Atorvastatin Loading Dose (LOAD) randomized trial.

Unlabelled: Preliminary evidence suggests that statins may prevent major perioperative vascular complications.

Methods: We randomized 648 statin-naïve patients who were scheduled for noncardiac surgery and were at risk for a major vascular complication. Patients were randomized to a loading dose of atorvastatin or placebo (80 mg anytime within 18hours before surgery), followed by a maintenance dose of 40 mg (or placebo), started at least 12hours after the surgery, and then 40 mg/d (or placebo) for 7days.

Alterations in glucose metabolism proteins responsible for the Warburg effect in esophageal squamous cell carcinoma.

Esophageal squamous cell carcinoma (ESCC) is the most frequent esophageal tumor in the world. ESCC presents late diagnosis, highly aggressive behavior and poor survival. Changes in tumor cell energy metabolism appear to have a prominent role in malignant transformation.

Transarterial Embolization for Hepatocellular Carcinoma: A Comparison between Nonspherical PVA and Microspheres.

Transarterial chemoembolization (TACE) and transarterial embolization (TAE) have improved the survival rates of patients with unresectable hepatocellular carcinoma (HCC); however, the optimal TACE/TAE embolic agent has not yet been identified. The aim of this study was to compare the effect of two different embolic agents such as microspheres (ME) and polyvinyl alcohol (PVA) on survival, tumor response, and complications in patients with HCC submitted to transarterial embolization (TAE). Eighty HCC patients who underwent TAE between June 2008 and December 2012 at a single center were retrospectively studied.

Survival rates according to barcelona clinic liver cancer sub-staging system after transarterial embolization for intermediate hepatocellular carcinoma.

Aim: To investigate the survival rates after transarterial embolization (TAE).

Methods: One hundred third six hepatocellular carcinoma (HCC) patients [90 barcelona clinic liver cancer (BCLC) B] were submitted to TAE between August 2008 and December 2013 in a single center were retrospectively studied. TAE was performed via superselective catheterization followed by embolization with polyvinyl alcohol or microspheres.

Nutritional status, lipid profile and HOMA-IR in post-liver transplant patients.

Introduction: A high prevalence of overweight, obesity, diabetes and dyslipidemia has been reported following liver transplantation (LT). Although these conditions are known to induce an increased risk for cardiovascular events, which are among the major causes of death in post-LT patients, much debate remains in the literature regarding the applicability of different nutritional assessments methods to this population.

Objective: To assess the nutritional status, lipid profile, homeostatic model assessment of insulin resistance (HOMA-IR) and dietary intake adequacy in the post-LT period.

Basal energy expenditure measured by indirect calorimetry in patients with squamous cell carcinoma of the esophagus.

Background: Determination of Basal Energy Expenditure (BEE) is essential for planning nutritional therapy in patients with esophageal cancer.

Aims: The objective of this study was to determine BEE through indirect calorimetry (IC) in patients with squamous cell carcinoma of the esophagus (SCC).

Methods: Cross-sectional study involving 30 patients admitted with a diagnosis of SCC who underwent IC before starting cancer therapy.

Brazilian consensus in gastric cancer: guidelines for gastric cancer in Brazil.

Background: In Brazil, gastric cancer is the fourth most common malignancy among men and sixth among women. The cause is multivariate and the risks are well known. It has prognosis and treatment defined by the location and staging of the tumor and number of lymph nodes resected and involved.

Thromboembolism prevention in surgery of digestive cancer.

Background: The venous thromboembolism is a common complication after surgical treatment in general and, in particular, on the therapeutic management on cancer. Surgery of the digestive tract has been reported to induce this complication. Patients with digestive cancer have substantial increased risk of initial or recurrent thromboembolism.

Alterations in epidermal growth factor receptors 1 and 2 in esophageal squamous cell carcinomas.

Background: Esophageal squamous cell carcinoma (ESCC) shows a 5-year survival rate below 10%, demonstrating the urgency in improving its treatment. Alterations in epidermal growth factor receptors are closely related to malignancy transformation in a number of tumors and recent successful targeted therapies have been directed to these molecules. Therefore, in this study, we analyzed the expression of EGFR and HER2 and evaluated EGFR mutation profile as well as the presence of mutations in hotspots of KRAS and BRAF in ESCC patients.

HPV infection in Brazilian patients with esophageal squamous cell carcinoma: interpopulational differences, lack of correlation with surrogate markers and clinicopathological parameters.

The role of HPV in esophageal squamous cell carcinoma (ESCCs) is controversial. Therefore, we determined, through different methodologies, the prevalence of HPV in 264 ESCC samples from Brazil, and correlated it with the presence of surrogate markers and clinicopathological characteristics. HPV is present in 13% of ESCC, and with a 3-fold variation between high and medium incidence areas.

[Zenker diverticulum: surgical versus endoscopic treatment].

Objective: To review the evidence of safety and effectiveness of endoscopic and surgical treatment of Zenker's diverticulum.

Methods: Searches of MEDLINE, LILACS and SciELO by "Zenker's diverticulum" or "pharyngoesophageal diverticulum," and selection of studies for quality assessment and data extraction to a meta-analysis.

Results: The study did not find any randomized clinical trial.

Identification of a DNA methylome signature of esophageal squamous cell carcinoma and potential epigenetic biomarkers.

Esophageal squamous cell carcinoma (ESCC) is believed to arise from esophageal mucosa through accumulation of both genetic and epigenetic changes. DNA methylation is a critical epigenetic mechanism involved in key cellular processes and its deregulation has been linked to many human cancers, including ESCC. The aim of this study is to examine the global deregulation of methylation states in ESCC and identify potential early biomarkers.

[Immunohistochemical expression of P53 and Ki-67 in diethylnitrosamine-induced carcinomas esophageal: experimental model].

Objective: To evaluate the expression of P53 and Ki-67 during esophageal diethylnitrosamine (DEN)-induced carcinogenesis in 100 mice by immunohistochemistry.

Methods: The animals were assigned to 4 groups, receiving water and food ad libitum. Control groups I and II received weekly esophageal gavage with cold (room temperature) or hot (60-70 degrees C) water, respectively.

Evaluation of the heme oxygenase-1 expression in esophagitis and esophageal cancer induced by different reflux experimental models and diethylnitrosamine.

Purpose: To study the expression of heme-oxygenase-1 (HO-1), an enzyme induced by oxidative stress, in specimens obtained from an experimental model in rats that evaluated the role of gastric and duodenal reflux in esophageal carcinogenesis.

Methods: Esophageal specimens embedded in paraffin obtained from different experimental groups of rats were used for immunohistochemistry analysis of HO-1 expression. The rats had been divided into the following groups and were killed after 22 weeks: (1) cardioplasty to induce acid reflux; (2) esophagoduodenal anastomosis to induce duodenal reflux; (3) no treatment; (4) cardioplasty + diethylnitrosamine (DEN); (5) esophagoduodenal anastomosis + DEN; and (6) DEN.

Immunohistochemical evaluation for P53 and VEGF (Vascular Endothelial Growth Factor) is not prognostic for long term survival in end stage esophageal adenocarcinoma.

Objectives: To correlate the expression of p53 protein and VEGF with the prognosis of patients submitted to curative resection to treat esophageal adenocarcinoma.

Methods: Forty-six patients with esophageal adenocarcinoma, submitted to curative resection, were studied. The expressions of p53 protein and VEGF were assessed by immunohistochemistry in 52.

[Evaluation of the analgesic effects of the lumiracoxib compared with placebo in the 24 first postoperative hours].

Objectives: To test lumiracoxib used preemptively against a placebo,and to analyse the analgesic administration (dipirona and tramadol) in the 24 first postoperative hours.

Methods: Sixty patients undergone to a breast aumentation, under epidural anesthesia, were selected and put randomly in two groups - GI and GII. Sixty minutes before the surgery, it was administered orally, one pill of lumiracoxib 400mg to the 30 GI patients and one pill of placebo to the 30 GII patients.

Topic liver hypothermia and ischemic preconditioning: a new model of ischemia and reperfusion in rats.

Purpose: Evaluation of the Mean Arterial Pressure (MAP) and body temperature changes in a new model of liver ischemia-reperfusion applying topical Hypothermia and Ischemic Preconditioning (IPC).

Methods: Rats (n= 32) were divided in 5 groups: Control (C), Normothermic Ischemia (NI), Ischemic Preconditioning (IPC), Hypothermia 26 degrees C plus IPC (H+IPC) and Hypothermia 26 degrees C (H). MAP and body temperature were recorded at 30 minutes intervals throughout the entire experiment.

Immunoreactivity of cytokeratins 7 and 20 in goblet cells and columnar blue cells in patients with endoscopic evidence of Barrett's esophagus.

Context: Barrett's esophagus is characterized by the presence of goblet cells. However, when alcian-blue is utilized, another type of cells, called columnar blue cells, is frequently present in the distal esophagus of patients with endoscopic evidence of Barrett's esophagus. Cytokeratin 7 and 20 immunoreactivity has been previously studied in areas of intestinal metaplasia at the esophagogastric junction.

Effect of black tea in diethylnitrosamine-induced esophageal carcinogenesis in mice.

Purpose: To evaluate the effect of black tea on esophageal carcinogenesis induced by the oral administration of diethylnitrosamine (DEN).

Methods: A population of 120 female mice (Mus musculus, strain CF1) were studied for 160 days. The animals were assigned to two control groups and three treatment groups.

Morphine does no promote esophageal carcinogenesis in rats exposed to diethylnitrosamine.

Background: The high incidence of esophageal cancer in the north of Iran has been associated to the consumption of opium and exposure to nitrosamines. Diethylnitrosamine has an established potential of producing experimental cancer in the esophagus and liver.

Aim: To evaluate by histopathology the effect of oral administration of morphine and diethylnitrosamine during 23 weeks on the hepatic and esophageal carcinogenesis on 176 rats.