Pulmonary-Renal Syndrome By Joyce Lee, MD, MAS, University of Colorado School of Medicine Reviewed / Revised Sep 2021 | Modified Sep 2022 View Patient Education Etiology Symptoms and Signs Diagnosis Treatment Key Points Topic Resources Causes of Pulmonary-Renal... Pulmonary-renal syndrome is diffuse alveolar hemorrhage plus glomerulonephritis, often occurring simultaneously.