The expectoration of bright red blood from the lungs or bronchi and trachea. it is ususally of tuberculous origin, but may occur in acute lobar pneumonia, in chronic pneumonia, due to inhalation of industrial irritants such as beryllium, vanadium, etc. and in the pneumoconiosis group of lung diseases, bronchiectasis, carcinoma, rupniosis of an aortic aneurysm, lung abscess, parasitic disease, cardiac disease and various fungous infections of the lung.