Autosomal dominant polycystic kidney disease
Incidence 1 in 1000
2 types exist:
- Type 1
- mutation in PKD1 on chromosome 16
- 85% of cases
- more severe disease – earlier end stage renal failure
- Type 2
- mutation in PKD2 on chromosome 4
Presentation:
- Flank/back pain
- Haematuria
- UTI
- Abdominal mass
- Hypertension (75%)
Note that autosomal dominant polycystic kidney disease is a systemic disease:
- Cysts may also be found in:
- Liver (75% of patients)
- Pancreas
- Ovaries
- Choroid plexus
- Other associated complications include
- Aortic aneurysm
- Mitral valve prolapse and MR
- Aortic regurgitation
- Subarachnoid haemorrhage
Autosomal recessive polycystic kidney disease
- Incidence 1 in 6000 - 40000
- Inherited on chromosome 6
- Up to 30% die by the neotnatal period
- End stage renal failure occurs in a third in childhood
- Associated with congenital hepatic fibrosis
Other genetic diseases causing renal cysts include:
- Von Hippel-Lindau
- Tuberous sclerosis
- Zellweger syndrome
References