A pulmonary aerial source should be considered in addition to the more common systemic source (bronchial aery) in the setting of destructive lung lesion such as cavitatory tuberculosis. However the vascular structure that should be evaluated first is the bronchial aery. Remember : Ramussen Aneurysm Ramussen aneurysm is a rare cause of bleeding in cavitatory tuberculosis and results from erosion of tuberculous cavity into a pulmonary aery branch. The most common source of bleeding in Retnussen aneurysm is the pulmonary aerydeg.">