Surgery Small & Large Intestine 887f303e The best investigation for colorectal carcinoma: A Exfoliative cytology B Air contrast barium enema C Ultrasound D Colonoscopy and biopsy High-Yield Explanation Ans: d (Colonoscopy and biopsy)Ref: Bailey & Love, 24,hed, p. 1179 & 23rd ed,p.1051