[Prune belly syndrome and congenital kidney tumors].

[megacystis-microcolon-intestinal hypoperistalsis syndrome]

High end sonography allows the prenatal localization of the kidneys and the corresponding urine drainage system as early as 10 -13 weeks of gestation . In mid second trimester , the voiding and filling of the urinary bladder can be demonstrated by ultrasound . Obstructions are the most common abnormalities of the urogenital tract . Though less frequent in incidence , more complex sequences of anomalies such as Prune Belly Syndrome or Megacystis -Microcolon -Intestinal -Hypoperistalsis -Syndrome (MMIHS ) can also be detected in early gestational age .Pathogenesis , prenatal diagnosis , pre- and postnatal treatment options and prognosis are discussed .The same risk-adapted procedures aimed to protect the fetal urinary excretory function known in the therapeutic regimen of obstructive uropathy are available as treatment options . These range from non-invasive ultrasound for diagnosis and surveillance to needle procedures or even endoscopic interventions . Another rare entity of renal abnormalities are congenital neoplasm 's--megaloblastic nephroma , nephroblastoma and neuroblastoma .Prognosis and obstetrical management are to be determined individually for each patient .