Preoperative radiation therapy for adenocarcinoma of the rectum and rectosigmoid.
D000230:Adenocarcinoma; D012809:Colon, Sigmoid; D006801:Humans; D020360:Neoadjuvant Therapy; D012004:Rectal Neoplasms; D012007:Rectum; D012811:Sigmoid Neoplasms
RECTUM/neoplasms; SIGMOID/neoplasms