<prompt> Rasmussens aneurysm is aDilated vessel in a tubercular lung cavityDilated of the root of aoa in valvular stenosisDilated aoa in syphilitic affectionDilated renal vessel in hypeensive renal disease  <response>: In tuberculosis,hemoptysis can occur due to rupture of a dilated vessel in a tuberculous cavity.It is known as Rasmussens aneurysm. Ref:Harrisons medicine-18th edition,page no:1345. 