Fig. 4From: MRI-based nomogram analysis: recognition of anterior peritoneal reflection and its relationship to rectal cancersTumor location with regard to the anterior peritoneal reflection (APR) was determined by MRI (a–c) and intraoperative palpation and visualization (d–f). “☆” in MRI imaging: tumor; yellow arrow in MRI imaging: APR; green line in resected specimens: APR. a, d: above the APR; b, e: straddle the APR; c, f: below the APRBack to article page