Focal proliferative and necrotizing glomerulonephritis presenting with mild urinary abnormalities and normal renal function in a young adult

Anti-neutrophil cytoplasmic antibody–associated crescentic glomerulonephritis commonly presents as a renal emergency requiring timely care to reduce risk of kidney failure and related mortality. Milder forms of disease are less common, and it requires a high index of suspicion to detect them. Herein, we report a case of focal proliferative and necrotizing glomerulonephritis in a 21-year-old patient presenting with a new-onset microscopic haematuria and minimal proteinuria associated with normal renal function.