<prompt> Most common Glomerulonephritis associated with HIV :Focal Segmental GlomerulosclerosisDiffuse glomerulosclerosisMembrano-proliferative glomerulonephritisCrescentic glomerulonephritis  <response>: Ans. a Focal Segmental GlomerulosclerosisRef: Robbins pathology 9th ed. 918-920Depending on the cause focal segmental glomerulosclerosis is broadly classified as: Primary, when no underlying cause is found; usually presents as nephrotic syndrome Secondary, when an underlying cause is identified; usually presents with kidney failure and proteinuria. This is actually a heterogeneous group including numerous causes such as Infections such as HIV known as HIV- Associated NephropathyOther Causes of FSGS Toxins and drugs such as heroin and pamidronate Chronic pyelonephritis V.U.R 