Adenocarcinoma of the lower esophagus after placement of a gastric band.

A 43-year-old man presented with severe back pain. He had a history of morbid obesity, for which an esophagogastric silicone band was placed 2 years before presentation. Magnetic resonance imaging of the vertebral column showed multiple osseous metastases.

Needle-knife sphincterotomy as a precut procedure: a retrospective evaluation of efficacy and complications.

Background And Study Aims: Precut sphincterotomy remains a controversial means of gaining biliary access during endoscopic retrograde cholangiopancreatography (ERCP). This report is a retrospective evaluation of the use of needle-knife sphincterotomy as a precut procedure to achieve biliary access during ERCP.

Patients And Methods: From November 1992 to August 1993, a total of 1071 ERCPs were performed at our institution.

[Intussusception in disseminated peritoneal leiomyomatosis].

A 28-year-old woman presented with intussusception. At laparotomy the peritoneal cavity was found to contain many nodules of various sizes, fitting the diagnosis of 'leiomyomatosis peritonealis disseminata'. A leiomyomatous tumour that caused the intussusception was also found.

Susceptibility to effects of UVB radiation on induction of contact hypersensitivity as a risk factor for skin cancer in humans.

Normal, healthy human volunteers and patients with proved history of non-melanoma skin cancer have been tested for their capacity to develop contact hypersensitivity to dinitrochlorobenzene (DNCB) following exposure of buttock skin to acute, low-dose ultraviolet B (UVB) radiation. Using a radiation protocol that achieves virtually complete depletion of normal-appearing Langerhans cells from irradiated skin, it was learned that approximately 60% of healthy volunteers developed vigorous contact hypersensitivity (CH) when 2000 micrograms DNCB was painted on the irradiated site. These individuals were designated UVB-resistant, and were distinguished from other individuals, designated UVB-susceptible, who failed to develop contact hypersensitivity following an identical treatment protocol.