title: Double pylorus: report of two cases and review of the literature.
abstract: Double pylorus is a rare condition consisting of a double communication between gastric antrum and duodenal bulb; in most cases it is a complication of penetrating ulcer, sometimes it is a congenital abnormality. The prevalence of this rare anomaly ranges from 0.02% to 0.13%; the male:female ratio is about 2:1. Two cases of acquired double pylorus are reported with a review of the literature. The first case represented an occasional report; in the other one the development of double pylorus from confluent prepiloric and bulbar ulcers was documented through serial endoscopies. Both patients were affected with chronic renal failure and referred previous treatment with diclofenac; however, their relationship with double pylorus onset remains unproven.
authors.affiliation: Unità Operativa di Gastroenterologia, Università di Pisa, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Polloni
authors.forename: S
authors.initials: S
authors.lastname: Marchi
authors.forename: M
authors.initials: M
authors.lastname: Bellini
authors.forename: F
authors.initials: F
authors.lastname: Costa
authors.forename: V
authors.initials: V
authors.lastname: Bonifazi
authors.forename: E
authors.initials: E
authors.lastname: Tumino
authors.forename: G
authors.initials: G
authors.lastname: Cipparrone
authors.forename: M
authors.initials: M
authors.lastname: Spataro
authors.forename: M
authors.initials: M
authors.lastname: Straniti
authors.forename: E
authors.initials: E
authors.lastname: Arrighi
mesh_terms: D004378:Duodenal Diseases / Q000175:diagnosis / Q000209:etiology; D005747:Gastric Fistula / Q000175:diagnosis / Q000209:etiology; D005773:Gastroscopy; D006801:Humans; D007412:Intestinal Fistula / Q000175:diagnosis / Q000209:etiology; D008297:Male; D008875:Middle Aged; D010437:Peptic Ulcer / Q000150:complications; D011706:Pyloric Antrum / Q000473:pathology