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Surgery Miscellaneous 2a066186

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
High-Yield Explanation
(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

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