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Walk the Even Hospital Database by book and chapter — the raw source passages that ground Ask, DDx, and the rest.

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contentuptodate· Content· item f7_60_8139

©2013 UpToDate ® Print Email Colorectal cancer tumor regression grade Description Tumor regression grade No viable cancer cells 0 (complete response) Single cells or small groups of cancer cells 1 (moderate response) Residual cancer outgrown by fibrosis 2 (minimal response) Minimal or no tumor kill; extensive residual cancer 3 (poor response) Used with the permission of the American Joint Committee on Cancer (AJCC), Chicago, Illinois. The original source for this material is the AJCC Cancer Staging Manual, Seventh Edition (2010) published by Springer New York, Inc.