Related Experiment Video
Updated: Mar 26, 2026

Laparoscopic Anatomical Right Hemihepatectomy via the In Situ Anterior Approach
Published on: August 8, 2025
Large retroperitoneal hemangioma encompassing the renal vein
Matthew Mossanen1, Manjiri Dighe1, John Gore1
1University of Washington Medical Centre, Department of Urology, Seattle, WA, U.S.
Abstract:
Retroperitoneal hemangioma (RH) is a rare and benign vascular malformation. RH may be detected incidentally or present with symptoms due to local invasion of adjacent structures. Management options include surgical resection, as well as serial observation with routine imaging. We describe a retroperitoneal hemangioma encompassing the renal vein that was discovered during diagnosis of acute appendicitis, and characterize diagnostic magnetic resonance imaging (MRI) findings seen with this condition.
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