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Abstract
A prospective study was performed to compare the sensitivities of intraoperative ultrasound (US) and computed tomography during arterial portography (CTAP) in the depiction of hepatic metastases from colorectal cancer. Twenty-five patients with hepatic metastases from colorectal cancer were evaluated. All patients underwent partial hepatectomy, and 56 metastases were pathologically proved. Preoperatively, CTAP depicted 51 of the 56 metastases (91%). Intraoperative US depicted 54 of the 56 metastases (96%). Intraoperative US depicted three metastases (5%) that were not depicted with CTAP and two that were missed with palpation (3%). Furthermore, intraoperative US did not demonstrate any false-positive lesions. There was no statistically significant difference in sensitivity between the two techniques. The authors concluded that intraoperative US does not enable detection of more liver metastases from colorectal cancer when CTAP is considered as the preoperative standard of reference. Nevertheless, the results of the study suggest that intraoperative US and CTAP are complementary techniques, and the preoperative use of CTAP for determining the feasibility of hepatic resection cannot prevent the use of intraoperative US.
Published Version
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