In Duke's classification of colorectal carcinoma stageA means: (A) Involvement upto muscularis propria, (B) Involvement beyond muscularis propria, (C) Positive lymph node involvement, (D) Distant metastasis
Answer is A. (A) Involvement up to muscularis propria # Duke's prognostic classification> A-growth in colon/rectum only> B-growth extending to extrarectal tissues but no metastasis to regional lymph nodes> C-secondary deposits in regional lymph nodes