if ever, been proved to harbor invasive or metastasizing carcinoma, and that villous adenomas fairly frequently do. If Dr. Turell insists that ...

Of all advanced adenomas, 42% had >3 adenomas diagnosed on previous colonoscopies, 67% (n = 68) were sized >10 mm, 28% (n = 28) had villous histology and 5% (n = 5) had high grade dysplasia.