Table 2

Frequency of K-ras codon 12 mutations in serrated adenomas, atypical hyperplastic polyps and sporadic polypoid adenomas

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  • Values in parentheses are percentages.

  • AHP, atypical hyperplastic polyp; SA, lesion composed purely of serrated adenoma; SA+HP/AHP, serrated adenoma accompanied by hyperplastic polyp or atypical hyperplastic polyp; all SA foci, data confined to area of serrated adenoma; AD, sporadic tubular adenoma.

  • 3-150 K-ras point mutation was detected only in the area of serrated adenoma.

  • 3-151 p=0.017 (1/20 v 18/60); ‡p=0.18 (0/5 v18/60).