Editorial: Collapsing glomerulopathy: a lesion under-recognised in Pakistan

Collapsing glomerulopathy (CG) is a distinctive but nonspecific pattern of proliferative renal parenchymal injury characterised morphologically by an implosive, global and/or segmental collapse and wrinkling of the glomerular capillary walls. This is associated with a nearcomplete occlusion of the capillary lumen, florid hypertrophy and hyperplasia of the visceral epithelial cells (VECs), and severe tubulo-interstitial lesions.