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Comparison of adenoma miss rate and adenoma detection rates between Endocuff Vission-assisted colonoscopy and conventional colonoscopy: a multicenter randomized trial (EXCEED study)

(1) To compare adenoma miss rates (AMR) between Endocuff Vision-assisted colonoscopy (EAC) and conventionalcolonoscopy (CC)(2) To compare adenoma detection rates (ADR) between EAC and CC(3) To assess whether a proposed increased ADR and reduced AMR…

The Gallbladder Function after Gastric Bypass Surgery - Trial

Primary Objective: To assess the impact of RYGB on gallbladder function (during a follow-up interval of 1 year). We will assess the fasting volume, the ejection fraction and the residual volume of the gallbladder. In addition, we will compare serum…

Diarrhea during use of the oral angiogenesis inhibitors sunitinib and sorafenib

To identify what might be the cause of the occurrence of diarrhea during the use of angiogenesis inhibitors sunitinib and sorafenib in patients with a malignancy.

Contrast-enhanced endoscopic ultrasound versus CT scan in the evaluation of focal pancreatic lesions.

The study is designed to assess the diagnostic value of contrast agents on endosonographic images during the evaluation of focal pancreatic lesions.

Treatment of anal intraepithelial neoplasia in HIV-positive patients, a triple-arm randomized clinical trial

To establish the preferred treatment of AIN to prevent the development of severe anal neoplasia (persistent AIN III or anal carcinoma) in HIV+ MSM and HIV+ woman.

Liver toxicity of azathioprine and 6-mercaptopurine in IBD patients.

The primary goal of the study is the prevalence of NRH in patients with IBD, who have been treated for at least five years with azathioprin or 6-mercaptopurin. A MRI of the liver, using the Seiderer protocol, and a percutaneous liver biopsy will be…