Solitary Peutz-Jeghers type hamartomatous polyps in the duodenum are not always associated with a low risk of cancer: two case reports.

Introduction: A hamartomatous polyp without associated mucocutaneous pigmentation or a family history of Peutz-Jeghers Syndrome is diagnosed as a solitary Peutz-Jeghers type hamartomatous polyp. As compared with Peutz-Jeghers Syndrome, Peutz-Jeghers type hamartomatous polyps are diagnosed with a lower risk of cancer and are regarded as a different disorder.

Case Presentation: In case one, we describe an 84-year-old Japanese man with a 14 mm duodenal polyp.

Risk factors for mortality in patients with Mallory-Weiss syndrome.

Background/aims: Although the majority of patients with Mallory-Weiss syndrome (MWS) have a benign course, in some patients MWS results in a fatal outcome. Therefore, this study was carried out to analyze the risk factors for mortality in patients with MWS.

Methodology: The medical records of patients with MWS seen between March 1994 and July 2007 were reviewed retrospectively.