RT Book, Section
A1 McQuaid, Kenneth R.
A2 Papadakis, Maxine A.
A2 McPhee, Stephen J.
A2 Rabow, Michael W.
A2 McQuaid, Kenneth R.
SR Print(0)
ID 1184170698
T1 Polyps of the Colon
T2 Current Medical Diagnosis & Treatment 2022
YR 2022
FD 2022
PB McGraw-Hill Education
PP New York, NY
SN 9781264269389
LK accessmedicine.mhmedical.com/content.aspx?aid=1184170698
RD 2024/04/25
AB Polyps  (eFigure  15–31)  are  discrete  mass  lesions  that  protrude  into  the  intestinal  lumen.  Although  most  commonly  sporadic,  they  may  be  inherited  as  part  of  a  familial  polyposis  syndrome.  Polyps  may  be  divided  into  four  major  pathologic  groups:  mucosal  adenomatous  polyps  (tubular,  tubulovillous,  and  villous),  mucosal  serrated  polyps  (hyperplastic,  sessile  serrated  polyps,  and  traditional  serrated  adenoma),  mucosal  nonneoplastic  polyps  (juvenile  polyps,  hamartomas,  inflammatory  polyps),  and  submucosal  lesions  (lipomas,  lymphoid  aggregates,  carcinoids,  pneumatosis  cystoides  intestinalis).  Of  polyps  removed  at  colonoscopy,  over  70%  are  adenomatous;  most  of  the  remainder  are  serrated.  Adenomatous  polyps  and  serrated  polyps  have  significant  clinical  implications  and  will  be  considered  further  below.