ABSTRACT
The level and pattern of the fever were of utmost importance in establishing the diagnosis. Many pulmonary diseases of various etiologies present with fever, occasionally prolonged, with or without other systemic symptoms. The chest radiograph is the most common diagnostic tool in pulmonary medicine. Fiberoptic Bronchoscopy is one of the most common diagnostic procedures in pulmonary medicine. It serves in the diagnosis of carcinoma of the lung, hemoptysis, pulmonary infections, and interstitial lung disease. Bronchoalveolar lavage is helpful in diagnosing fungal infections. Pneumonia, microbial infection of the lower respiratory tract, remains the most common cause of infectious disease death in the US The immunologic process may cause pyrexia, so that many of the granuloma-forming diseases may manifest with fever or present as fever of unknown origin. Wegener granulomatosis is characterized by necrotizing granulomatous vasculitis of the upper and lower respiratory tracts, glomerulonephritis and small vessel vasculitis.
