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Cap polyposis (CP) is a rare disease that was first described by Williams et al.1 in 1985. It is characterized by multiple polyps with a mucoid and fibrinopurulent cap. Although the pathogenesis is unknown, the characteristic histological appearance is similar to that of mucosal prolapse syndrome (MPS). Endoscopically, it is difficult to distinguish the polyps of CP from inflammatory polyps and neoplasms. True neoplasms can be differentiated from non-neoplastic lesions by magnifying colonoscopy, but the changes in the mucosal surface of CP have not been investigated in detail. A case of CP that was treated successfully with conservative therapy, is described, as well as the findings obtained by magnifying colonoscopy.

A newly devised overtube for diagnostic and interventional endoscopy has been used in 140 cases. In 60 cases of acute gastrointestinal bleeding, adequate gastric lavage was completed in 14.1 +/- 1.3 min, using an average of 7.5 +/- 0.69 liters; the volume of fluid recovered was 103.9 +/- 0.58% of the volume infused. This tube also allows simultaneous gastric lavage and esophageal or gastric tamponade, enabling therapeutic intervention with sclerotherapy or bipolar coagulation in the patient with acute massive bleeding. This device can be employed for the removal of bezoars, foreign bodies, and multiple polyps.