The Miss Rate for Colorectal Adenoma Determined by Quality-Adjusted, Back-to-Back Colonoscopies.

Background/aims: Colonoscopy is considered to be the gold standard for detecting adenomatous polyps. Polyps are missed during colonoscopic examination at a rate that varies from 6% to 27%. The adenoma miss rate affects colonoscopic surveillance intervals and procedural quality.

Comparison of the Effectiveness of Interventional Endoscopy in Bleeding Peptic Ulcer Disease according to the Timing of Endoscopy.

Background/aims: The optimal timing for interventional endoscopy in bleeding peptic ulcer disease is controversial. This study compared the outcomes between early endoscopy and delayed endoscopy in patients with bleeding peptic ulcer disease.

Methods: We conducted a prospective analysis of data from 90 patients with bleeding peptic ulcer disease who visited the emergency room between May 2006 and September 2007.

Pseudoinvasion in an adenomatous polyp of the colon mimicking invasive colon cancer.

Pseudoinvasion or pseudocarcinomatous invasion in an adenomatous polyp of the colon can be unfamiliar to an endoscopist. Pseudoinvasion in an adenomatous polyp represents prolapse of the adenomatous epithelium into its stalk. In most cases its morphology does not differ from of general adenomatous polyps, but in some cases it can morphologically mimic a malignant polyp with submucosal invasion due to mass-like lesioning of its stalk.

[Clinical characteristics and changing epidemiology of Clostridium difficile-associated disease (CDAD)].

Background/aims: The spectrum of Clostridium difficile-associated disease (CDAD) ranges from mild diarrhea to life-threatening colitis. Recent studies reported an increase in incidence and severity of CDAD and the presence of severe community-acquired CDAD (CA-CDAD). The aims of this study were to investigate the incidence of CA-CDAD and non-antibiotics-associated CDAD, and to compare the clinical characteristics between hospital-acquired (HA) and CA-CDAD.

[A case of familial Crohn's disease observed in a parent and his offspring].

Crohn's disease (CD), one of the major forms of idiopathic inflammatory bowel disease (IBD), is thought to be related to genetic susceptibility coupled with environmental factors. A positive family history is the strongest risk factor for the development of CD. The 10-fold increase in the familial risk of CD strongly suggests that these disorders have a genetic background.

[Psoas abscess with hip contracture in a patient with Crohn's disease].

A psoas abscess (PA) is a rare clinical entity but is potentially serious condition which presents diagnostic and therapeutic challenges. The diagnosis is frequently delayed due to its variable and nonspecific features and occult clinical course. The delay in diagnosis and treatment of PA is the major poor prognostic factor.

[Histological changes of gastric atrophy and intestinal metaplasia after Helicobacter pylori eradication].

Background/aims: Long-term Helicobater pylori infection results in atrophic gastritis and intestinal metaplasia, and increases the risk of gastric cancer. However, it is still controversial that eradication of H. pylori improves atrophy or metaplasia.

[Telemedicine with digital video transport system].

Background/aims: The growth of technology based on internet protocol has affected on the informatics and automatic controls of medical fields. The aim of this study was to establish the telemedical educational system by developing the high quality image transfer using the DVTS (digital video transmission system) on the high-speed internet network.

Methods: Using telemedicine, we were able to send surgical images not only to domestic areas but also to international area.