NCIt definition : A renal disorder characterized by sclerotic lesions in the glomeruli. Causes include
drugs, viruses, and malignancies (lymphomas), or it may be idiopathic. It presents
with asymptomatic proteinuria or nephritic syndrome and it may lead to renal failure.;
Alternative definition : NICHD: Segmental scarring of the glomerulus, which may result in isolated proteinuria
or nephrotic syndrome, which affects only part of the glomerulus and only some of
the glomeruli.;