Abnormal renal glomerulus morphology Glomerular extracapillary hypercellularity 2017-02-20T14:07:24Z Extracapillary glomerular hypercellularity Hypercellularity (increased number of cells) in the renal glomerulus but external to the glomerular capillaries, i.e., in the Bowman space or more than one layer of parietal or visceral epithelial cells. Extracapillary hypercellularity