BACKGROUND AND OBJECTIVE Barrett's esophagus (BE) is characterized by the transition of squamous epithelium into columnar epithelium with intestinal metaplasia. The increased number and types of immune cells in BE have been indicated to be due to a Th2-type inflammatory process. We tested the alternative hypothesis that the abundance of T-cells in BE is caused by a homing mechanism that is foun...

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Duodenum is the second most frequent location for diverticulum in the digestive tract, surpassed only by the colon. Perforation is rare, but it is the most serious complication of duodenum diverticula. Presently described is case of 22-year-old male patient who presented at emergency department with abdominal pain and vomiting. Surgery was performed with prediagnosis of perforated duodenum dive...