RT Book, Section
A1 Ursem, Carling
A1 McQuaid, Kenneth R.
A2 Papadakis, Maxine A.
A2 McPhee, Stephen J.
A2 Rabow, Michael W.
A2 McQuaid, Kenneth R.
SR Print(0)
ID 1193162539
T1 Carcinoma of the Anus
T2 Current Medical Diagnosis & Treatment 2023
YR 2023
FD 2023
PB McGraw-Hill Education
PP New York, NY
SN 9781264687343
LK accessmedicine.mhmedical.com/content.aspx?aid=1193162539
RD 2024/04/19
AB The  anal  canal  is  lined  from  its  proximal  to  distal  extent  by  columnar,  transitional,  and  non-keratinized  squamous  epithelium,  which  merges  at  the  anal  verge  with  the  keratinized  perianal  skin.Cancers  arising  from  the  mucosa  of  the  anal  canal  are  relatively  rare,  comprising  only  2%  of  all  GI  malignancies.  Anal  carcinoma  occurred  in  an  estimated  8590  patients  in  the  United  States  in  2020,  more  commonly  in  women  than  men  (2:1  ratio).  Squamous  cell  carcinomas  (SCC)  make  up  the  majority  of  anal  cancers;  adenocarcinomas  account  for  the  remainder  but  are  uncommon.