Corticosteroids have anti-inflammatory and pro-fibrotic tissue maturation effects and are effective in early and mid-stage retroperitoneal fibrosis with active inflammation, with an efficiency of 75%, but are not very effective in patients with late fibrosis formation. Malignant retroperitoneal fibrosis or other diseases should be considered if the mass does not shrink or increase in size on repeat CT and MRI after 6 to 8 weeks of treatment.
In cases of inflammatory abdominal aortic aneurysm and periaortic aneurysm fibrosis, the treatment of the aortic disease itself should be considered. Previously, artificial vascular replacement replacement was used to deal with inflammatory abdominal aortic aneurysm with many unfavorable factors such as anatomical and mild difficulties and postoperative infection, and currently, endoluminal repair of aortic aneurysm is used to deal with good results in the near future, and the long-term results are still being verified.