Symptomatic improvement of diffuse esophageal spasm after botulinum toxin injection.

Diffuse esophageal spasm, an uncommon esophageal motility disorder, has recently been defined using high-resolution manometry. Patients with distal esophageal spasm usually complain of chest pain or dysphagia. The etiology and pathophysiology of this disorder are poorly known, and treatment options are limited.

Influenza A (H1N1) 2009 pandemic calm down the prevalence of acute hepatitis A in the latter half of 2009: Korean population study.

Background/aims: There was a spiking incidence of acute hepatitis A (AHA) in 2009 summer, but it went down drastically after an outbreak of influenza A (H1N1). We assessed the relationship between 2009 H1N1 pandemic and AHA prevalence from August to December 2009.

Methods: We compared AHA cases nationwide and in our hospital for the period from the latter half of 2008 to the end of 2010.

Benefit of pronase in image quality during EUS.

Background: EUS is useful for diagnosis of GI disease. However, artifacts caused by gastric mucus may worsen visibility during EUS.

Objective: To investigate the efficacy of premedication with pronase, the proteolytic enzyme, for improving imaging during EUS.

[Jejunal intussusception with gastrointestinal bleeding caused by metastatic lung cancer].

Intestinal intussusception caused by metastatic tumor is uncommon. Symptomatic small bowel metastases from lung cancer have been rarely reported. Here we report a case of intussusception with gastrointestinal bleeding induced by jejunal metastasis of non-small cell lung cancer with a review of the literature.