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 1193151587
T1 Benign Tumors of the Small Intestine
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=1193151587
RD 2024/04/19
AB Benign  and  malignant  tumors  (see  Chapter  39  for  Malignant  Tumors)  of  the  small  intestine  are  rare,  accounting  for  3–6%  of  GI  neoplasms.  They  often  cause  no  symptoms  or  signs.  However,  they  may  cause  acute  GI  bleeding  with  hematochezia  or  melena  or  chronic  GI  blood  loss  resulting  in  fatigue  and  iron  deficiency  anemia.  Small  bowel  tumors  may  cause  obstruction  due  to  luminal  narrowing  or  intussusception  of  a  polypoid  mass.  Neuroendocrine  tumors  may  present  with  diarrhea,  flushing,  or  wheezing.  Small  bowel  tumors  usually  are  identified  by  video  capsule  endoscopy,  CT  or  MR  enterography,  or  barium  small  bowel  series.  Visualization  and  biopsy  of  duodenal  and  proximal  jejunal  mass  lesions  are  performed  with  a  long  upper  endoscope  known  as  an  enteroscope.