A novel homogeneous irradiation fiber probe for whole bladder wall photodynamic therapy.

Background And Objective: We designed and fabricated a novel fiber probe that homogeneously illuminates the urinary bladder cavity for photodynamic therapy (PDT) of bladder cancer, which is known to occur in multifocal areas and to proliferate diffusely in the bladder mucosa.

Study Design/materials And Methods: One end of a quartz multicore fiber was twisted and conically shaped, and the sharpened apex of the fiber end was rounded in order to provide light of which the fluence distribution approximates the three-dimensional shape of the bladder cavity of rats. The superiority of the developed fiber probe (homogenous irradiation fiber probe: HIFiP) to a control fiber with a flat cleaved end (CF) in Photofrin®-PDT using a rat orthotopic bladder cancer model was evaluated.

[A case of giant heterotopic Brunner's gland adenoma prolapsing into the duodenum].

A 81-year-old woman admitted with general fatigue was found to have a giant polyp in the gastric antrum by endoscopy. The polyp prolapsed into the duodenum through the pylorus. Angiographic examination of the abdomen revealed the polyp to be about 90×35 mm in size.