<prompt> Rasmussens aneurysm occurs due toVeebral aeryBronchial aerypulmonary aeryPosterior intercostal aery  <response>: Rasmussens aneurysm is a pulmonary aery aneurysm adjacent or within a tuberculous cavity. It occurs in up to 5 of patients with such lesions. It may lead to rupture and haemorrhage. 