Beynon, J Preoperative staging of local invasion in rectal cancer using endoluminal ultrasound. [electronic resource] - Journal of the Royal Society of Medicine Jan 1987 - 23-4 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0141-0768 Standard No.: 10.1177/014107688708000110 doi Subjects--Topical Terms: Carcinoma--pathologyHumansNeoplasm InvasivenessNeoplasm Staging--methodsPreoperative CareRectal Neoplasms--pathologyUltrasonography