<prompt> Collapsing glomerulopathy is seen in?Post streptococcal GNHIVIgA nephropathyTuberculosis  <response>: Ans. is b i.e., HIV Collapsing glomerulopathy: It is a morphological variant of FSGS. Characterized by collapse and sclerosis of the entire glomerular tuft in addition to the usual FSGS lesions. A characteristic feature is proliferation and hypertrophy of glomerular visceral epithelial cells podocytes. There is prominent tubular injury with formation of microcystes. It is the most characteristic lesion of HIV nephropathy. 