Case 37: CT Chest

72 M with fever and cough

Findings reveal a large lower lobe cavity with a well defined spherical lesion within the cavity, that intesely enhances on contrast administration.

Diagnosis

Rassmusen Aneursym in a chronic healed tuberculous cavity

Discussion

Rassmusen is caused by weakening of the pulmonary artery wall from adjacent cavitary tuberculosis, while mycotic aneurysm can occue in underlying fungal setting, and is common in IV drug users

Bronchial Artery Embolization (BAE) can be considered in Rassmusen aneurysms who bleed and fulfill criteria for BAE

Contributed by

Dr Vaibhav/ Prism Diagnostic Center