Surviving Complications of Retroperitoneal Fibrosis with Intermittent Relapses over a Period of 20 years: Case report and literature Review: Is it chronic progressive disease or intermittent relapses every time encasing a new structure?. Int J Med Surg Sci [Internet]. 2021 Jan. 9 [cited 2026 Jun. 26];8(2):1-18. Available from: https://revistas.uautonoma.cl/index.php/ijmss/article/view/673