Retroperitoneal Liposarcoma Masquerading as an Impending Rupture of Inflammatory Abdominal Aortic Aneurysm

Ann Vasc Surg. 2019 Apr:56:354.e21-354.e23. doi: 10.1016/j.avsg.2018.08.103. Epub 2018 Nov 26.


Background: We present a unique case scenario of a periaortic liposarcoma masquerading as an impending rupture of an inflammatory abdominal aortic aneurysm (AAA).

Methods and results: A 57-year-old man was referred to our unit for an emergency endovascular repair of "an inflammatory AAA with computed tomography (CT) features of impending rupture." He underwent an uneventful endovascular repair with a bifurcated endograft (C3; Gore, Flagstaff, AZ). Seven weeks later, CT showed that the periaortic "mass" grew larger and asymmetric, and a CT-guided needle biopsy suggested the presence of a high-grade malignant mesenchymal tumor. He underwent laparotomy and excision of the retroperitoneal tumor en bloc with the anterior wall of the infrarenal aorta. The endograft acted as an excellent "safety net" providing adequate hemostatic control and obviating the need for aortic cross-clamping and repair of the aortic defect with a patch or tube graft.

Conclusions: The learning point from the present case is that when faced with an inflammatory AAA and/or retroperitoneal fibrosis, the rare possibility of a retroperitoneal neoplasm should be kept in mind.

Publication types

  • Case Reports

MeSH terms

  • Aortic Aneurysm, Abdominal / diagnostic imaging*
  • Aortic Aneurysm, Abdominal / surgery
  • Aortic Rupture / diagnostic imaging*
  • Aortic Rupture / surgery
  • Aortography / methods*
  • Blood Vessel Prosthesis Implantation
  • Computed Tomography Angiography*
  • Diagnosis, Differential
  • Endovascular Procedures
  • Humans
  • Liposarcoma / diagnostic imaging*
  • Liposarcoma / surgery
  • Male
  • Middle Aged
  • Predictive Value of Tests
  • Retroperitoneal Fibrosis / diagnostic imaging*
  • Retroperitoneal Fibrosis / surgery
  • Retroperitoneal Neoplasms / diagnostic imaging*
  • Retroperitoneal Neoplasms / surgery