<prompt> The prognosis is best in rapidly progressive crescentic glomerulonephritis associated with:Poststreptococcal glomerulonephritisSystemic lupus erythematosus SLEHenoch-Schoenlein purpuraPolyaeritis nodosa  <response>: Rapidly progressive glomerulonephritis may occur in association with the five diseases mentioned and also with periaeritis polyaeritis nodosa, Wegeners granulomatosis, and essential cryoglobulinemia. Some cases arise without a known antecedent disease idiopathic. Although the prognosis is poor in all types of rapidly progressive glomerulonephritis, post streptococcal disease has a better prognosis than the other types, and up to 50 of patients may recover sufficient renal function to avoid chronic dialysis or transplantation. Ref: Wyatt C., Kemp W.L., Moos P.J., Burns D.K., Brown T.G. 2008. Chapter 16. Pathology of the Kidney and Bladder. In C. Wyatt, W.L. Kemp, P.J. Moos, D.K. Burns, T.G. Brown Eds, Pathology: The Big Picture. 