Polyangiitis Overlap Syndrome with Multiple Pulmonary Aneurysms and Renal Vascular Hypertension
1996
: A 37-year-old man with multiple nodules on a chest X-ray film, hypertension, and proteinuria was admitted to our hospital in September, 1993. Thirteen years earlier, he had been admitted to another hospital because of bloody sputum, fever, and dyspnea. He also had slight oral aphthae and slight iridocyclitis. A chest X-ray film at that time showed bilateral diffuse reticular shadows, and his illness was diagnosed as acute interstitial pneumonitis. Since that time, he had been continuously receiving tapering doses of prednisolone. His chest symptoms were relieved, and the findings on the chest X-ray film resolved with that treatment. In 1993, he also had positive tests for HBs antigen and for HLA-B51, and he was found to have renal vascular hypertension. Chest CT films and a pulmonary angiogram showed multiple aneurysms and occlusions of pulmonary arteries. A renal angiogram showed multiple intraparenchymal aneurysms of renal arteries. A specimen taken by open-lung biopsy showed healed endoarteritis obliterans of muscular arteries and no alveolitis. His illness was diagnosed as polyangiitis overlap syndrome, because of the unclassified systemic necrotizing vasculitis.
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