The bottom line: MRI and CT findings of unusual rectal and perirectal pathology
Although common nonspecific symptoms (i.e., rectal bleeding, pelvic pressure, and change in bowel habits) are associated with rectal cancer, occasionally these are related to a different underlying disease. Over the past few years, considerable progress has been made in imaging of the rectum. Specifically, new magnetic resonance techniques and capabilities provide impressive high-resolution assessment of the rectal wall and enable evaluation and characterization of the perirectal tissues. This paper reviews imaging findings of uncommon causes of rectal and perirectal pathology that may be clinically confounded with rectal cancer. Radiologists need to be aware of uncommon pathologies in this region in order to facilitate optimal management decisions.
KeywordsMR Perirectal mass Presacral mass Rectal mass
Compliance with ethical standards
Conflict of interest
None. All authors declare no conflict of interest.
This article does not contain any studies with human participants or animals performed by any of the authors.
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