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BACKGROUND Self-expandable metal stents (SEMSs) are used for colonic obstruction palliatively and preoperatively. OBJECTIVE Determine long-term efficacy, incidence of complications, and risk factors of SEMS placement for colonic obstruction. DESIGN Retrospective review of SEMSs placed for malignant colorectal obstruction from 1999 to 2008. SETTING(More)
Infection of epithelial cells by Cryptosporidium parvum triggers a variety of host-cell innate and adaptive immune responses including release of cytokines/chemokines and up-regulation of antimicrobial peptides. The mechanisms that trigger these host-cell responses are unclear. Thus, we evaluated the role of TLRs in host-cell responses during C. parvum(More)
BACKGROUND Endoscopic therapy is the preferred approach for the management of Barrett's esophagus (BE) patients with high-grade dysplasia (HGD) and intramucosal carcinoma (IMC). Little is known about outcome differences in patients with HGD versus IMC. OBJECTIVE To determine and compare the rate of recurrent dysplasia or neoplasia in patients with HGD or(More)
BACKGROUND Self-expandable metal stents (SEMSs) are accepted palliation for malignant colon obstruction. Outcomes of different stent types is unknown. OBJECTIVE Our purpose was to compare outcomes after palliative placement of the Enteral Wallstent (EW) and the Precision Colonic Ultraflex (PCU) stent. DESIGN Retrospective study of all SEMS placement(More)
BACKGROUND & AIMS Barrett's esophagus (BE) with low-grade dysplasia (LGD) can progress to high-grade dysplasia (HGD) and esophageal adenocarcinoma (EAC). Radiofrequency ablation (RFA) has been shown to be an effective treatment for LGD in clinical trials, but its effectiveness in clinical practice is unclear. We compared the rate of progression of LGD after(More)
BACKGROUND Recent studies suggest that there is a substantial risk of perforation after colorectal stent placement. OBJECTIVE To identify risk factors for perforation from colonic stenting. DESIGN A meta-analysis of 86 studies published between 2005 and 2011. SETTING Multicenter review. PATIENTS All patients who underwent colorectal stent placement.(More)
BACKGROUND AND AIMS The natural history of refractory benign esophageal strictures (RBES) is unclear, and surgery or percutaneous endoscopic gastrostomy (PEG) may be the only viable long-term options. The aim of the present study was to assess the long-term outcomes of patients with RBES. METHODS Clinical data of consecutive patients with RBES treated in(More)
Cryptosporidium parvum attaches to intestinal and biliary epithelial cells via specific molecules on host-cell surface membranes including Gal/GalNAc-associated glycoproteins. Subsequent cellular entry of this parasite depends on host-cell membrane alterations to form a parasitophorous vacuole via activation of phosphatidylinositol 3-kinase(More)
BACKGROUND A 72-year-old male presented to the emergency department with epigastric pain, anorexia and progressive jaundice of 1 week's duration. He had no prior history of gastrointestinal illness, diabetes or cancer. He did not smoke or consume alcohol. He did have a family history of colon and bone cancer. INVESTIGATIONS Biochemical and serologic(More)