title: Defecography in normal volunteers: results and implications.
abstract: Forty seven healthy young volunteers underwent defecographic examination to determine the range of normal findings. Normality was shown to encompass radiological features often considered pathological. These features included broad ranges of anorectal angle and pelvic floor descent which overlap with reported pathological states. Furthermore, the formation of rectocoeles during defecation was a very common finding in women. Finally, a subgroup of the volunteers had marginal anorectal function. The marginal anorectal function and certain radiological findings such as rectocoeles or intussusceptions may predispose to later problems, or contribute to clinical problems when combined with other factors such as dietary fibre deficiency. The radiological findings raise a number of questions with respect to different aspects of the functioning of the continence and defecation mechanisms.
authors.affiliation: Department of Radiology, McMaster University Medical Center, Hamilton, Ontario, Canada.
authors.forename: P J
authors.initials: PJ
authors.lastname: Shorvon
authors.forename: S
authors.initials: S
authors.lastname: McHugh
authors.forename: N E
authors.initials: NE
authors.lastname: Diamant
authors.forename: S
authors.initials: S
authors.lastname: Somers
authors.forename: G W
authors.initials: GW
authors.lastname: Stevenson
mesh_terms: D000328:Adult; D001003:Anal Canal / Q000000981:diagnostic imaging; D001466:Barium Sulfate; D003672:Defecation / Q000502:physiology*; D005260:Female; D006547:Hernia / Q000000981:diagnostic imaging; D006801:Humans; D007443:Intussusception / Q000000981:diagnostic imaging; D008297:Male; D010388:Pelvis / Q000000981:diagnostic imaging; D011859:Radiography; D012002:Rectal Diseases / Q000000981:diagnostic imaging; D012005:Rectal Prolapse / Q000000981:diagnostic imaging; D012007:Rectum / Q000033:anatomy & histology / Q000000981:diagnostic imaging*
chemical_list: D001466:Barium Sulfate