Defecography
medical radiological imaging in which the mechanics of a patient's defecation are visualized in real time, using a fluoroscope
Defecography (also known as proctography, defecating/defecation proctography, evacuating/evacuation proctography or dynamic rectal examination) is a type of medical radiological imaging in which the mechanics of a patient's defecation are visualized in real time using a fluoroscope. The anatomy and function of the anorectum and pelvic floor can be dynamically studied at various stages during defecation.
History
Defecating proctography was pioneered in 1945, during World War II. The procedure gained popularity at this time in the midst of an outbreak of whipworm, which is known to cause rectal prolapse. It has since become used for diagnosis of various anorectal disorders, including anismus and other causes of obstructed defecation.
It has fallen out of favor due to inadequate training in the technique. It is now only performed at a few institutions. Many radiology residents refer to the procedure as the "Def Proc", "Defogram", or "Stool Finale".
Indications
Defecography may be indicated for the following reasons:
Evaluation of rectal outlet obstruction (obstructed defecation) symptoms
Evaluation of all types of rectal (fecal) incontinence.
Suspected conditions such as internal rectal intussusception, enterocele, anismus, rectocele or sigmoidocele.
To compare pre- and post-surgical repair of rectal outlet obstruction (obstructed defecation).
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