Fig. 1

The comparison of diseased blood vessels and collateral vessels before and after treatment. a Before treatment, the lesion of the left chest and back was obviously raised and convex. b After treatment, the lesion of the left chest and back was obviously reduced, and multiple ablation needle marks were seen on the surface skin. c The pre-treatment CTA results showed that the lesion involved the left posterior chest wall, bone destruction, and multiple ribs and thoracic vertebrae. The lesion was obviously protruded into the chest, multiple blood supply arteries were enlarged, directly from the thoracic aorta, the collateral vessels were extremely abundant, and the lesions were obviously enhanced. d After treatment, the left erector spine lesions and intercostal muscles present in the CTA were significantly reduced and thinned. Most of the original enhanced lesions showed a low density, and the blood supply and collateral vessel number decreased significantly. e The CTA case comparison before and after treatment (3-year reexamination) showed that the left erector spine lesions and intercostal muscles had been further reduced and thinned. Most of the original enhanced lesions showed a low density, and the blood supply arteries and collateral vessels decreased significantly