MR Rectum Inflammation - reporting template
Shahid Hussain
Donald Mitchell
Curtis P. Langlotz [editor]
MRI, rectum, inflammation
Reporting template for rectal MRI exam for inflammation.
2009-12-01
en
MR_Rectum_Inflammation.2009-12-01
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These sequences were performed in sagittal, coronal and
axial planes.
ml
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The starting point of the fistula from the anal canal; usually
located between 2-3 cm from the anal verge in the posterior aspect of the
anal canal
The end point of the fistula located at the skin level around
the anus; usually visible at physical exam
Located between the internal and the external anal
sphincter
Traverses is located between the internal and the
external anal sphincter
Runs above the level of the anal canal but does have an
internal opening at the level of the anal canal
Runs above the level of the anal canal and has an
internal opening with the rectum
Describe the location of the fistula in relation to the
anal canal verge or the introitus of the vagina
Very complex and large fistulas, particularly if the
fistulas cannot be classified according to the Parks’
classification, raise the possibility of underlying inflammatory
bowel disease such as Crohn’s disease.
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Any part of the fistula (either the main fistula or
a side branch) that is wider than the remainder of the fistula
is considered an abscess. Any (loculated) fluid collection in
the setting of ano-rectal inflammation is suspect for an
abscess
Describe presence of any setons (threads of non-absorbable
material placed through the fistula) or drains
tumor invades the submucosa
tumor invades the muscularis propria
tumor invades the muscularis propria
tumor invades the perirectal fat
tumor less than 5 mm into the perirectal fat or
extramural
tumor 5-10 mm into the perirectal fat or
extramural
tumor greater than 10 mm into the perirectal fat or
extramural
tumor invades the adjacent vital organs or is within 2mm of the
CRM
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