Table Manifestations of Lung Transplant Rejection by Category Rejection Category Manifestations Hyperacute Poor oxygenation, fever, cough, dyspnea, decreased FEV1 Accelerated Poor oxygenation, fever, cough, dyspnea, infiltrate seen on chest x-ray, decreased FEV1 Acute Same as those for accelerated Interstitial perivascular infiltrate (detected by transbronchial biopsy) Chronic Obliterative bronchiolitis, cough, dyspnea FEV1 = forced expiratory volume in 1 second.