2004
DOI: 10.1007/s00053-004-5113-0
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The Sonographic Appearance of the Anal Canal by Endoanal Sonography with a 7 mm Probe

Abstract: Background: Imaging of the anorectal region has drastically changed over the past decade by the introduction of anal endosonography. This method has been used to localize injuries to the anal sphincters, fistula tracts and abscesses as well as to assess local invasion of cancerous lesions. It allows a quick and easy visualisation of the anorectal mucosa and the surrounding muscular structures. Limitations of endosonography include strictures and acute painful conditions.These caveats are largely caused by the … Show more

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Cited by 4 publications
(2 citation statements)
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References 10 publications
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“…These caveats are largely caused by the size of regular rectal probes which have an average diameter of 17 to 20 mm. The introduction of EAUS probes with a diameter below 1 cm (actually 7 mm) represents a major improvement, particularly for imaging all layers of the anal canal even under acute pain[ 43 ]. The second pitfall of EAUS, also caused by the size of the probes, relates to changes in the anatomy of the anal canal resulting from the stretching of the anal canal and compression of the mucosal tissues.…”
Section: Discussionmentioning
confidence: 99%
“…These caveats are largely caused by the size of regular rectal probes which have an average diameter of 17 to 20 mm. The introduction of EAUS probes with a diameter below 1 cm (actually 7 mm) represents a major improvement, particularly for imaging all layers of the anal canal even under acute pain[ 43 ]. The second pitfall of EAUS, also caused by the size of the probes, relates to changes in the anatomy of the anal canal resulting from the stretching of the anal canal and compression of the mucosal tissues.…”
Section: Discussionmentioning
confidence: 99%
“…Die Verwendung einer kleinen Endosonde von 7 mm Durchmesser kann diese Limitierung aufheben. Im Analkanal lässt sich mit dieser Sonde als erste gemischt echogene, graue, an die Sonde angrenzende Schicht das Anoderm deutlich von dem darauf folgenden echoarmen Ring, dem Musculus sphincter ani internus, abgrenzen [19].…”
Section: Diskussionunclassified