Fig. 1From: Excluding the ischiorectal fossa irradiation during neoadjuvant chemoradiotherapy with intensity-modulated radiotherapy followed by abdominoperineal resection decreases perineal complications in patients with lower rectal cancerDelineation of the CTV in Ischiorectal Fossa area. Blue line: CTV; a Delineating the IRF area. b cT2–3: Omitting the IRF areaBack to article page