Crescentic glomerulonephritis, also known as extracapillary proliferative nephritis, is seen in acute progressive nephritis, which is characterized by acute nephritis syndrome onset, rapid deterioration of renal function, and early oliguric acute kidney injury. The pathology is characterized by severe damage to the glomerular capillaries, fracture of the tubular wall, and blood flow into the glomerular capsule, leading to proliferation of epithelial cells and endothelial cells in the glomerular capsule wall, infiltration of monocytes, and production of pro-fibrotic factors, culminating in the appearance of an early cellular crescent, followed by a late fibrotic crescent. The vast majority, accounting for more than 50% of the glomerular capsule, have a large number of crescent bodies, accounting for more than 50% of the glomerular capsule lumen as the main feature.