RT Book, Section
A1 Densmore, John C.
A1 Oldham, Keith T.
A2 Rudolph, Colin D.
A2 Rudolph, Abraham M.
A2 Lister, George E.
A2 First, Lewis R.
A2 Gershon, Anne A.
SR Print(0)
ID 7035952
T1 Chapter 388. Abdominal Masses
T2 Rudolph's Pediatrics, 22e
YR 2011
FD 2011
PB The McGraw-Hill Companies
PP New York, NY
SN 978-0-07-149723-7
LK accesspediatrics.mhmedical.com/content.aspx?aid=7035952
RD 2024/04/19
AB The  abdominal  mass  in  an  infant  or  child  is  most  commonly  an  incidental  finding  first  observed  by  a  parent  or  at  the  time  of  a  pediatric  screening  examination.  Over  50%  of  abdominal  masses  detected  by  physical  examination  are  actually  cases  of  organomegaly.1,2  The  remaining  43%  of  masses  require  surgical  evaluation  and  comprise  neoplasms,  developmental  anomalies,  and  inflammatory  or  infectious  disease.  Ninety  percent  of  this  group  are  retroperitoneal  masses,  approximately  half  of  which  derive  from  the  urinary  tract.2  In  neonates,  multicystic  dysplastic  kidney  and  hydronephrosis  occur  in  equal  frequency  and  comprise  75%  of  abdominal  masses.2  Older  children  are  more  likely  to  have  neoplastic  processes.2Table  388-1  lists  the  most  likely  diagnoses  that  vary  by  location  of  the  mass  and  age  group.