causes of nephromegaly
A new born male presented with bilateral nephromegaly and mild hypertension. Function of the right kidney was reduced on excretory urography. Ultrasound showed bilaterally enlarged kidneys with increased echogenicity and poorly defined corticomedullary junctions. Areas of decreased medullary enhancement were seen on CT.
Diabetic nephropathy: Most common cause of bilateral enlarged kidneys, accounting for 50% of cases. May precede chemical evidence of diabetes by a year or so. The echogenicity of the kidneys is normal. Acute glomerulonephritis: Enlargement is thought to be due to edema. Patients present with renal insufficiency.