This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Large intestine, Subject name: Surgery
Intestinal polyps that can potentially grow into cancer: 
Select and explain. 
A. Adenomatous polyp, B. Hyperplastic polyp, C. Juvenile polyp, D. Hamaomatous polyp
A: Adenomatous polyp
Answer: A: Adenomatous polyp 
Explanation: 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%