title: Juxtarenal Aortic Pseudoaneurysm - Right Renal Vein Fistula with Circumaortic Renal Collar-Delayed Manifestation of a Gunshot Injury - an Uncommon Entity Diagnosed with CT Angiography.
abstract: BACKGROUND
  Delayed presentation of post-traumatic aortic pseudoaneurysm and its fistulous communication with the right renal vein is a very rare entity. Most of the cases described in literature are due to abdominal aortic aneurysm (AAA) rupture into the left renal vein. To the best of our knowledge, communication with the right renal vein has not been described in published literature. Our patient also had a circumaortic renal collar, which is a rare renal vein anomaly. Aortic pseudoaneurysm, its fistulous communication with the right renal vein and circumaortic renal collar in a single patient is of extremely rare occurrence.
  
  
  METHODS
  A 29-year-old male presented to the cardiology department with complaints of breathlessness, abdominal pain and hematuria for the last 6 months. On clinical examination there was evidence of audible bruit over the abdomen. He had a past history of a gunshot injury around two years back. CT angiography revealed a large partially calcified pseudoaneurysm arising from the right lateral wall of the abdominal aorta with the neck of the pseudoaneurysm at juxtarenal location with a fistula between the anterior wall of the pseudoaneurysm and the posterior wall of the right renal vein. There was an associated incidental finding of circumaortic left renal vein with gross aneurysmal dilatation of both pre- and retro-aortic part of the renal vein.
  
  
  CONCLUSIONS
  Delayed presentation of aortic pseudoaneurysm with its fistulous communication with the right renal vein is a rare entity. CT angiography is a non-invasive modality for diagnosis of the exact site of communication, length of aneurysm, proximal and distal extent of the affected segment and its relationship with surrounding structures.
authors.affiliation: Department of Radiodiagnosis, Govind Ballabh Pant Institute of Postgraduate Medical Education & Research (GIPMER), New Delhi, India.
authors.forename: Lalit
authors.initials: L
authors.lastname: Garg
authors.affiliation: Department of Radiodiagnosis, Govind Ballabh Pant Institute of Postgraduate Medical Education & Research (GIPMER), New Delhi, India.
authors.forename: Neeraj
authors.initials: N
authors.lastname: Jain
authors.affiliation: Department of Radiodiagnosis, Govind Ballabh Pant Institute of Postgraduate Medical Education & Research (GIPMER), New Delhi, India.
authors.forename: Sachin
authors.initials: S
authors.lastname: Agrawal
authors.affiliation: Department of Radiodiagnosis, Govind Ballabh Pant Institute of Postgraduate Medical Education & Research (GIPMER), New Delhi, India.
authors.forename: Udit
authors.initials: U
authors.lastname: Chauhan
authors.affiliation: Department of Radiodiagnosis, Govind Ballabh Pant Institute of Postgraduate Medical Education & Research (GIPMER), New Delhi, India.
authors.forename: Vandana
authors.initials: V
authors.lastname: Goel
authors.affiliation: Department of Radiodiagnosis, Govind Ballabh Pant Institute of Postgraduate Medical Education & Research (GIPMER), New Delhi, India.
authors.forename: Sunil Kumar
authors.initials: SK
authors.lastname: Puri
keywords: Aneurysm, False; Aorta; Arteriovenous Fistula; Renal Veins