“ Progressive replacement of the renal parenchyma by cysts, the renal volume is massively increased. Cystic haemorrhage is common. Most pre...
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Progressive replacement of the renal parenchyma by cysts, the renal volume is massively increased.
Cystic haemorrhage is common. Most present clinically in patients aged 30-50 years.
In total, 75% have concurrent hepatic cysts, 10% are pancreatic and 10% have intracerebral berry aneurysms, valvular pathology and arterial dissections.
Cyst haemorrhage, infection and renal failure are common— malignancy is rare.
CT
• Massively enlarged kidneys with parenchyma replaced by cysts.
• Cysts may be of water density or commonly hyperdense from haemorrhage.
Post-contrast axial (a) and coronal (b) computed tomography scans showing grossly enlarged kidneys that are completely replaced by multiple cysts. Note also multiple liver cysts and a small volume of ascites. The appearance is typical of polycystic kidney disease.
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