title: [Colonorectal adenoma: relationships among histological structure, dimensions of the polyps, and age distribution].
abstract: Among 1258 polyps from the lower gastro-intestinal tract removed by rectoscopy or coloscopy and examined histologically there were 744 adenomas, 72% tubular, 27% papillary and 1% villous. 96.5% of all adenomas were extracted from patients aged over 40 years. Four fifths of the tumours were found in the rectum and sigmoid colon. Only 6% of the tubular adenomas were more than 15 mm in diameter, compared with 32% of papillary and 57% of villous adenomas. The special significance of the adenomas lies in their potential malignancy (adenoma-to-cancer sequence).
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D003110:Colonic Neoplasms / Q000145:classification / Q000473:pathology*; D005260:Female; D006801:Humans; D007417:Intestinal Polyps / Q000145:classification / Q000473:pathology* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D012004:Rectal Neoplasms / Q000145:classification / Q000473:pathology*
vernacular_title: Gli adenomi colorettali. Relazioni tra struttura istologica, dimensioni dei polipi e distribuzione tra le età.