RT Journal Article SR Electronic T1 Image of the month: Ormond's disease: A diagnostic challenge JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 440 OP 441 DO 10.7861/clinmed.2020-0288 VO 20 IS 4 A1 Almond Leung A1 Haitham M Elasir A1 Karim M Mahawish YR 2020 UL http://www.rcpjournals.org/content/20/4/440.abstract AB Idiopathic retroperitoneal fibrosis is a rare disease. Symptoms include constitutional symptoms and abdominal/flank pain. Causes of retroperitoneal fibrosis include non-infectious and infectious etiologies. Of the infectious etiologies, tuberculous aortitis is an important differential as it is associated with a high mortality rate. We present a case of a 59-year-old man with a retroperitoneal periaortic mass initially diagnosed as tuberculous aortitis. However following biopsy, the diagnosis was later amended to idiopathic retroperitoneal fibrosis with latent tuberculosis. He was successfully treated with prednisone and methotrexate.