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- W2074703148 abstract "PURPOSE: To determine the usefulness of endorectal ultrasonography (US) in staging rectal cancer discovered at polypectomy. MATERIALS AND METHODS: Before surgical resection, endorectal US was performed in 18 consecutive patients with adenocarcinoma discovered in polypectomy specimens. A rotating 7–10-MHz endoprobe with an inflatable balloon was used in all cases. The precise depth of penetration (T stage) was determined with endorectal US and correlated with the histopathologic findings. RESULTS: For detection of residual tumor after polypectomy, endorectal US had a sensitivity of 100%, specificity of 44%, positive predictive value of 64%, and negative predictive value of 100%. Although the precise T stage was correctly predicted with endorectal US in only eight patients (44%), endorectal US was able to demonstrate whether the tumor was limited to the bowel wall in 16 patients (89%). CONCLUSION: Endorectal US is an accurate technique for localizing tumors to or beyond the rectal wall in patients who have undergone diagnostic polypectomy. Although inaccuracies in determining the specific T stage may occur, endorectal US facilitates surgical planning in the vast majority of patients and should therefore remain the local staging technique of choice in this specific patient population." @default.
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- W2074703148 date "1999-04-01" @default.
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- W2074703148 title "Staging of Rectal Cancer after Polypectomy: Usefulness of Endorectal US" @default.
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- W2074703148 doi "https://doi.org/10.1148/radiology.211.1.r99ap1231" @default.
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