<prompt> Intestinal polyps that can potentially grow into cancer:Adenomatous polypHyperplastic polypJuvenile polypHamaomatous polyp  <response>: ADENOMATOUS POLYPS Most common neoplastic polyp is adenomatous, which harbors malignant potential. Most colon cancers arise from adenomatous polyps adenoma. Conditions associated with adenomatous polyps : Strong association with ureterosigmoidostomies, acromegaly and streptococcus bovis bactermia. Probability of development of malignancy depends upon: Gross Appearance of lesion Histology Size Pedunculated Sessile Increased risk Tubular MC Tubulovillous Villous Highest risk 1 cm 1-2 cm 2 cm Increased risk Adenomatous Polyps Types Incidence Villous tissue Risk of Malignancy Tubular 65-80 25 5 Tubulovillous 10-25 25-75 20 Villous 5-10 75 40 