DOI: https://doi.org/10.36347/sasjm.2026.v12i05.004

Pages: 394-397

Rasmussen’s aneurysm is a rare but potentially life-threatening vascular complication of pulmonary tuberculosis, caused by inflammatory erosion of a pulmonary artery branch adjacent to a tuberculous cavity. Its diagnosis relies primarily on imaging, particularly CT pulmonary angiography (CTPA), which is often performed in emergency settings for suspected pulmonary embolism. We report the case of a 66-year-old man admitted for acute dyspnea and oxygen desaturation. CTPA excluded pulmonary embolism and revealed imaging signs of right heart failure with pulmonary hypertension, which explained the patient’s clinical presentation. Incidentally, a small Rasmussen’s aneurysm was identified adjacent to a left apical cavitary lesions, along with parenchymal findings suggestive of active pulmonary tuberculosis. This case emphasizes the key role of CT angiography in detecting rare vascular complications of tuberculosis and highlights the importance of clinicoradiological correlation to distinguish incidental findings from the actual cause of symptoms.