TY - JOUR T1 - IgA nephropathy with diffuse alveolar haemorrhage JF - BMJ Case Reports JO - BMJ Case Reports DO - 10.1136/bcr-2018-227382 VL - 11 IS - 1 SP - e227382 AU - Shinichi Miyazaki AU - Akiko Hattori AU - Yasumasa Kuno AU - Takuya Ikeda Y1 - 2018/11/01 UR - http://casereports.bmj.com/content/11/1/e227382.abstract N2 - Immunoglobulin (Ig)A nephropathy is the most common cause of primary glomerulonephritis worldwide. While IgA nephropathy has been associated with a variety of other diseases, pulmonary complications are extremely rare. A 58-year-old man presented with a 2-week history of fever and exertional dyspnoea. A chest imaging revealed bilateral consolidation predominantly in upper lungs. Laboratory findings showed elevated serum creatinine with proteinuria and haematuria. Flexible bronchoscopy revealed diffuse alveolar haemorrhage, and IgA nephropathy was confirmed on a renal biopsy. He received prednisone with good effect. This case highlights the need to consider IgA nephropathy in the differential diagnosis of pulmonary renal syndrome. ER -