Rasmussen's aneurysm is a
Dilated vessel in a tubercular lung cavity
Dilated of the root of aoa in valvular stenosis
Dilated aoa in syphilitic affection
Dilated renal vessel in hypeensive renal disease
In tuberculosis,hemoptysis can occur due to rupture of a dilated vessel in a tuberculous cavity.It is known as Rasmussen's aneurysm. Ref:Harrison's medicine-18th edition,page no:1345.
Respiratory system