... circumferential margin in the modern treatment of rectal cancer? J Clin Oncol 2008,26:303-312.8. Diagnostic accuracy of preoperative magnetic resonance imaging in predicting curative resection of rectal ... oophorectomy for the leftovarian me tastasis, and peritoneal washing cyt ology to detect peritoneal seeding. Peritoneal seeding masses werenot observed during t he operation. Bilat eral sal phingo-oophorectomy ... Macklin CP, Tiffin NJ, Parsons W, Dixon MF, Mapstone NP,Abbott CR, Scott N, Finan PJ, Johnston D, et al: Rates of circumferentialresection margin involvement vary between surgeons and predict outcomes...