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Related Experiment Video

Updated: Dec 4, 2025

An Orthotopic Endometrial Cancer Model with Retroperitoneal Lymphadenopathy Made From In Vivo Propagated and Cultured VX2 Cells
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[LEIOMYOSARCOMA ARISING FROM THE RENAL VEIN].

Sho Sekito1, Kohei Nishikawa1, Takumi Kageyama1

  • 1Department of Nephro-Urologic Surgery and Andrology, Mie University Graduate School of Medicine.

Nihon Hinyokika Gakkai Zasshi. the Japanese Journal of Urology
|October 22, 2020
PubMed
Summary

A rare leiomyosarcoma originating from the renal vein wall was successfully excised along with the kidney and inferior vena cava (IVC). This case highlights a unique presentation of retroperitoneal sarcoma with no recurrence at 20 months.

Keywords:
leiomyosarcomarenal vein

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Area of Science:

  • Urology
  • Surgical Oncology
  • Pathology

Context:

  • Retroperitoneal masses can present with vague symptoms like back pain.
  • Invasion of adjacent vascular structures, including the renal vein and inferior vena cava (IVC), complicates surgical management.
  • Leiomyosarcoma is a rare soft tissue sarcoma with diverse origins.

Purpose:

  • To report a rare case of leiomyosarcoma originating from the renal vein wall.
  • To describe the diagnostic and surgical management of a large retroperitoneal mass involving major vasculature.
  • To review the literature on renal vein leiomyosarcoma.

Summary:

  • A 47-year-old female presented with back pain, found to have a 6 cm retroperitoneal mass invading the right renal vein and inferior vena cava (IVC).
  • Histopathology confirmed leiomyosarcoma of the renal vein wall, characterized by spindle cells positive for desmin, caldesmon, and HHF35.
  • The patient underwent successful tumor excision with the kidney, renal vein, and a portion of the IVC, with an uneventful recovery and no recurrence at 20 months.

Impact:

  • Demonstrates the feasibility of radical surgical resection for complex retroperitoneal sarcomas involving major vessels.
  • Contributes to the limited literature on leiomyosarcoma of the renal vein, aiding in understanding its presentation and management.
  • Highlights the importance of multidisciplinary evaluation for accurate diagnosis and treatment planning of rare retroperitoneal tumors.