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Preoperative evaluation of synchronous colorectal cancer using MR colonography
Academic Radiology, 06/19/09

Achiam MP et al. - Study demonstrates that the feasibility and potential gain of preoperative magnetic resonance colonography (MRC) in patients with sigmoid colon cancer or rectal cancer.

Methods

Aim was to determine the feasibility of performing MRC in pts:
- Who were not offered a full conventional colonoscopy or
- In whom full conventional colonoscopy was not possible
In a 13-mo period, 47 pts diagnosed with rectal or sigmoid colon cancer scheduled for operation were enrolled
MRC was performed with bowel purgation either:
- night before surgery or
- as ambulatory MRC the week before surgery

Results

Full MRC was performed in 98% of the pts
In 4 pts, 12 synchronous lesions (1 cancer, 2 plaques of carcinosis, and 9 adenomas) were found
1 flat adenoma and 5 small polyps were missed by MRC and perioperative palpation but found on postoperative colonoscopy
Findings resulted in altered operative strategies in 3 pts

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