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Sudden and rapid progression of lung affectation but stability in kidney function: a case report of anti-neutrophil cytoplasmic antibody-associated vasculitis

Authors Chen C, Zhu Y, Qian H, Yang L, Huang J

Received 10 June 2013

Accepted for publication 12 August 2013

Published 31 December 2013 Volume 2014:7 Pages 7—10


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 5

Cheng Chen,* Ye-Han Zhu,* Hong-Ying Qian,* Ling-Yi Yang, Jian-An Huang

Respiratory Division, The First Affiliated Hospital of Soochow University, Suzhou, People's Republic of China

*These authors contributed equally to this article

Abstract: We report the case of a patient with anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) who exhibited sudden progression of lung infiltration while maintaining stable kidney function. The 69-year-old man was diagnosed with AAV and renal insufficiency 4 years ago. Pulmonic affectation was detected in the right lower lobe of lung by a computed tomography (CT) scan. After beginning cyclophosphamide pulse therapy sequential therapy with low-dose prednisone, he underwent a 4-year follow-up to detect changes in hemoglobin levels and serum creatinine levels, and had chest CT examinations. The CT scan and creatinine assay showed stable pulmonic fibrosis and kidney function. Although there was no increase of creatinine and detectable perinuclear ANCA, the patient suffered a pulmonary hemorrhage and levels of hemoglobin became progressive lower; the lung infiltration was found to be enlarged last year. After immunosuppressive therapy for one week, the lung fibrosis was progressive, increased pulmonary hemorrhage occurred, and the patient died due to respiratory failure but not end-stage renal failure.

Keywords: vasculitis, ANCA, lung fibrosis, pulmonary hemorrhage, renal insufficiency

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