RT Book, Section
A1 Doherty, Gerard M.
SR Print(0)
ID 58112152
T1 Hemorrhoids
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=58112152
RD 2024/04/19
AB •  Internal  hemorrhoids  originate  above  dentate  line,  covered  by  mucosa•  External  hemorrhoids  are  vascular  complexes  covered  by  anoderm,  below  dentate  line•  Function  as  vascular  pillows,  protect  the  anal  canal  during  defecation•  No  correlation  between  constipation  and  hemorrhoids•  Internal  hemorrhoids  classification:-First-degree:  Bleed-Second-degree:  Bleed  and  prolapse  but  spontaneously  reduce-Third-degree:  Bleed,  prolapse,  and  require  manual  reduction-Fourth-degree:  Incarcerated•  Internal  hemorrhoids  become  symptomatic  when  chronic  engorgement  leads  to  tissue  laxity  and  tissue  prolapse  into  the  anal  canal•  External  hemorrhoids  become  symptomatic  with  thrombosis