A Large Superior Gluteal Artery Pseudoaneurysm Masquerading as a Pelvic Mass: When Not to Biopsy.
Vasc Endovascular SurgMay 21, 2026 (epub)
Parnavi Singh, Isabella Garganese, Nathan Gilmore et al.
✦ AI-curated · Sources linked
Case in brief
A patient presented with a superior gluteal artery pseudoaneurysm and an associated arteriovenous fistula, initially interpreted as a piriformis mass. Imaging findings enabled recognition of the vascular lesion, avoiding biopsy and guiding endovascular treatment. The pseudoaneurysm and fistula were occluded using endovascular techniques.
What made this case unusual
The pseudoaneurysm and associated fistula mimicked a piriformis soft-tissue mass, creating a potential hazard if the lesion had been biopsied.
Diagnostic / clinical pearl
A suspected pelvic or gluteal soft-tissue mass may be vascular; assess imaging for a pseudoaneurysm and associated fistula before biopsy or intervention.