Anti-glomerular Basement Membrane Disease: A Rare Case Report of Changing Clinical Phenotype and Atypicalities.

A man in his late 20s, a smoker, presented with nephrotic-range proteinuria and mild renal failure. He had no macroscopic hematuria or decreased urine output. Kidney biopsy was done which revealed a surprising diagnosis of anti-glomerular basement membrane (anti-GBM) disease.