The authors aimed to assess the accuracy and impact for patients of endorectal ultrasound as part of the preoperative selection process in transanal endoscopic microsurgery for early rectal cancer. The UK TEM prospectively maintained database containing 494 patients was used to determine the prevalence of endorectal ultrasound (ERUS) in preoperative staging and its accuracy by comparing this with the definitive pathological staging post TEM. 165 patients underwent ERUS in which it inaccurately staged 44.8% of tumours (32.7% understaged, 12.1% overstaged). No significant difference was seen in the depth of TEM excision or R1 rate between patients who underwent ERUS and those that didn’t.
Colorectal Disease 2012;14(7):821–826
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