<prompt> Which of the following types of glomerulonephritis is least likely to cause CRF:Post streptococcal glomerulonephritisMembranous GNMembrano proliferative GNFocal segmental glomerulosclerosis  <response>: Answer is A Post streptococcal GN: Acute post streptococcal GN is a cause of acute Renal failure and not Chronic Renal Failure. The other types of GN listed in the question are causes of CRF. In Post Streptococcal Gn Acute GN: 95 of the affected children recover. The remaining of who do not recover, develop a Rapidly Progressive form of Glomerulonephritis and land up in ACUTE RENAL FAILURE. 