Renal conditions that can be identified antenatallyDiseases of kidney like hydronephrosis i.e. large kidneys because of dilatation of pelvis, calyces with or without dilatation of ureters due to obstruction at pelviureteral junction or vesicoureteral junction, posterior urethral valves etc can be diagnosed after 18-22 weeks of pregnancy. Complete absence of one or both kidneys i.e. agenesis or small poorly developed kidneys i.e. hypoplastic / dysplastic kidneys can be detected antenatally. Diagnosis of congenital defects of both kidneys like polycystic disease or multicystic disease is also possible.
High risk patients
Renal defects are common if
- Previous sibling had defects like polycystic kidney disease which is an inherited kidney disease
Other congenital defects associated affecting the spine, heart, gastrointestinal tract or chromosomal defects
- There is less liquor amnii i.e. oligohydramnios
- Death of previous sibling due to multiple defects
- Elderly mother
- If the marriage is in closely related individuals
Chances of recurrence in future pregnanciesChances of recurrence in future siblings are high in inherited diseases like Infantile polycystic kidney disease in which each sib has 25% chances of suffering from PKD.