RT Book, Section
A1 Doherty, Gerard M.
SR Print(0)
ID 58098232
T1 Polyps, Colorectal
T2 Quick Answers Surgery
YR 2010
FD 2010
PB The McGraw-Hill Companies
PP New York, NY
SN 
LK accesssurgery.mhmedical.com/content.aspx?aid=58098232
RD 2024/04/24
AB •  Colorectal  polyps  are  masses  of  tissue  that  project  into  the  lumen•  Heterogeneous  group  of  sessile  or  pedunculated;  benign  or  malignant;  mucosal,  submucosal,  or  muscular  lesions•  Types  include:  -Neoplastic  (adenomas/carcinomas)-Hamartomas-Inflammatory-Hyperplastic•  Most  adenomas  are  tubular,  tubulovillous,  or  villous•  Hyperplastic  polyps  are  diminutive  lesions  most  often  found  in  the  left  colon•  Hamartomas  are  uncommon  (rarely  malignant)•  Adenomas  are  a  premalignant  lesion•  Vast  majority  of  adenocarcinomas  of  the  large  bowel  in  North  America  and  Europe  are  believed  to  evolve  from  adenomas