Update on MR Imaging of cystic retroperitoneal masses

  • Kathleen Nguyen
  • Evan S. Siegelman
  • Wendy Tu
  • Nicola SchiedaEmail author



This article reviews the MRI appearance of cystic retroperitoneal (RP) masses.


Lymphangiomas are the most common RP cystic masses and typically appear simple; microscopic fat is a specific but insensitive finding. Location, internal complexity, and enhancement pattern suggest alternative diagnoses which range from normal anatomic variants to congenital abnormalities and importantly include benign, neurogenic, and malignant neoplasms. An approach to the MR imaging of cystic RP masses is presented.


Retroperitoneal Cyst Lymphangioma Neurogenic Magnetic Resonance Imaging MRI 


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Authors and Affiliations

  1. 1.Department of Medical Imaging, The Ottawa HospitalThe University of OttawaOttawaCanada
  2. 2.Department of RadiologyThe Hospital of the University of PennsylvaniaPhiladelphiaUSA
  3. 3.The Ottawa HospitalThe University of OttawaOttawaCanada

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