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ES predicted mesorectal lymph node involvement with an accuracy of 83 per cent, sensitivity of 88 per cent, specificity of 79 per cent, positive predictive value of 78 per cent and negative predictive value of 89 per cent. CT in comparison had an accuracy of 57 per cent, sensitivity of 25 per cent, specificity of 91 per cent, positive predictive value of 75 per cent and negative predictive value of 53 per cent. No particular histological architectural feature could be identified as responsible for false positive diagnosis though nodal size was significantly larger in the true positive and false positive group when compared with the true negatives (P &amp;lt; 0\u00b7001 and P &amp;lt; 0\u00b701 respectively).<\/jats:p>","DOI":"10.1002\/bjs.1800760320","type":"journal-article","created":{"date-parts":[[2007,3,3]],"date-time":"2007-03-03T12:53:36Z","timestamp":1172926416000},"page":"276-279","source":"Crossref","is-referenced-by-count":156,"title":["Preoperative assessment of mesorectal lymph node involvement in rectal cancer"],"prefix":"10.1093","volume":"76","author":[{"given":"J","family":"Beynon","sequence":"first","affiliation":[{"name":"Department of Surgery, Medical Physics, Pathology and Radiology, Bristol Royal Infirmary , Bristol,","place":["UK"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"N J 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