rectalgia肛部痛rectaladj.直肠的Rectal cancer/treatment直肠癌／治疗Rectal Neoplasms/pathol直肠肿瘤/病理学rectal membrane permeabilit直肠黏膜的渗透性rectal epidermoid carcinoma直肠表皮样癌rectal neoplasms/surgery直肠肿瘤／外科学rectal catheter for infants婴儿直肠导管rectal catheter for children儿童直肠导管rectal mucous membrane ulcer直肠粘膜溃疡rectal speculum for operation手术用直肠镜rectal neoplasms/diagnosis直肠肿瘤/诊断

1. Colonoscopic views of another ulcerating mass, a rectal adenocarcinoma, are seen below.
   直肠腺癌的结肠镜检图显示溃疡型肿块。