CTICasesAortic Pseudoaneurysm
Imaging findings
A retroperitoneal mass read as lymphoma showed avid uptake on PET but was ultimately identified as a vascular pseudoaneurysm after an unsafe biopsy.
Key takeaways
Never biopsy a mediastinal or retroperitoneal mass that might be vascular without contrast-enhanced imaging. Signs of aortic wall discontinuity should immediately raise suspicion for a pseudoaneurysm.
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