Renal parenchymal disease is the most common cause of secondary hypertension (excluding obesity and alcohol abuse), and is responsible for 2-5% of all cases of hypertension.
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This means disease of the kidney cells (nephrons) themselves. It usually implies less than optimal capacity to process waste (such as urinary creatinine).
Renal parenchymal disease basically appear echogenic. There are three grades of renal parenchymal disease. Grade 1: the Kidney parenchyma is isoechoic to the liver, but there is still cortiomedullary...