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Local recurrences are the most common pattern of recurrent disease after abdominoperineal resection of rectal cancers. To prevent local recurrences, wide excision should be done ; i. e. the longer the length of the distance from the external edge of tumor to the surigcal margin of resection is, the smaller the incidence of the local recurrence is. <BR>The extraperitoneal rectum is approximated to the anterior organs, and the normal values of length and thickness of female rectovaginal space and male rectoprostatic space were measured. The present study is of autopsies of 15 patients (7 females and 8 males) who died with diseases except rectal cancer. <BR>The average values of length for female rectovaginal space and male rectoprostatic space were 47.5 mm and 50.6 mm respectively. At the most thickned part of these spaces, the mean value of thickness was 2.5 mm in female and 3.5 mm in male. The extraperitoneal rectum is approximated to the vagina or prostate anteriorly.
日本大腸肛門病学会の論文