A 34-year-old male, non-smoker, presented with a sudden onset of massive hemoptysis, characterized by bright red blood with a volume of approximately 250 ml. The CT angiography (CTA) revealed a mass in the right lower lobe (Fig. 1A), which was being supplied by a vessel originating from the descending thoracic aorta (Fig. 1B, marked with the green arrow). Additionally, several thickened and twisted vascular shadows were present, including pulmonary arteries (Fig. 1B and Fig. 1C, marked with the