RT Book, Section
A1 Carr, Michael C.
A1 Snyder, Howard M.
A2 Ziegler, Moritz M.
A2 Azizkhan, Richard G.
A2 Allmen, Daniel von
A2 Weber, Thomas R.
SR Print(0)
ID 1100436445
T1 Urinary Tract Obstruction
T2 Operative Pediatric Surgery, 2e
YR 2014
FD 2014
PB McGraw-Hill Education
PP New York, NY
SN 978-0-07-162723-8
LK accesspediatrics.mhmedical.com/content.aspx?aid=1100436445
RD 2024/04/24
AB Meatal  stenosis  is  a  condition  that  alters  the  direction  of  the  urinary  stream,  but  is  not  worrisome  for  obstruction  of  the  urinary  tract.Posterior  urethral  valves  present  as  a  spectrum,  from  in  utero  obstruction  which  can  be  lethal  due  to  pulmonary  hypoplasia  to  a  boy  with  persistent  bedwetting  and  daytime  incontinence.  Long-term  follow-up  is  critical  to  minimize  the  complications  due  to  “valve-bladder  syndrome.”Dilated  ureters  that  are  discovered  prenatally  can  be  due  to  ectopic  ureters,  primary  obstructed  megaureters,  or  ureteroceles.The  management  of  megaureters  has  evolved,  with  many  megaureters  showing  improvement  and  complete  resolution  with  expectant  management.  Long-term  follow-up  is  beneficial  through  adolescence  to  look  for  indolent  obstructive  changes  over  time.Antenatal  hydronephrosis  can  represent  a  ureteropelvic  junction  (UPJ)  obstruction,  but  the  onus  is  on  the  clinician  to  demonstrate  the  presence  of  obstruction  since  the  majority  of  patients  detected  are  asymptomatic.