Focal segmental glomerulosclerosis (FSGS)
DEFINITION
Focal segmental glomerulosclerosis (FSGS) is a disease in which scar tissue develops on the parts of the kidneys that filter waste out of the blood (glomeruli). FSGS can be caused by a variety of conditions. Without treatment, primary FSGS may lead to kidney failure where the only treatment options are dialysis or kidney transplant.