In collapsing glomerulopathy which of the following is seen -

A morphologic variant called collapsing glomerulopathy is characterized by the collapse of the glomerular tuft and epithelial cell hyperplasia. This more severe manifestation of FSGS may be idiopathic or may be associated with HIV infection, drug-induced toxicities, and some microvascular injuries. It carries a paicularly poor prognosis Ref: ROBBINS BASIC PATHOLOGY 10th ed Pg no: 557