[Culture and polymerase chain reaction of Helicobacter pylori from rectal and terminal ileal fluid after polyethylene glycol (colyte) ingestion in healthy adults with positive urea breath test].

Background/aims: Helicobacter pylori (H. pylori) transmission route is not yet clearly understood. Isolating H.

[A case of macroscopically unvisualized mucin-hypersecreting biliary papillomatosis diagnosed by microscopy].

The mucin-hypersecreting biliary papillomatosis is a premalignant neoplasm characterized by intraductal papillary proliferation involving extensive areas of the intrahepatic and/or extrahepatic bile duct. We report a case of mucin-hypersecreting biliary papillomatosis manifested as obstructive jaundice and diagnosed only by microscopy, with a review of literatures. A 74-year-old female, who had a past history of cholecystectomy about 13 years ago, was admitted to our hospital with jaundice.

[Telomerase expression in colorectal tubular adenoma determined by immunohistochemical staining].

Background/aims: Telomeres are simple repeat elements located at each chromosome end of eukaryotic cells. The main function of telomeres is to cap the chromosome end and protect it from enzymatic attack. Telomerase that facilitates the synthesis of telomere has been detected in not only cancer but also precancerous lesion.