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[Laparoscopic Tumor Resection for Retroperitoneal Leiomyosarcoma-A Case Report]
Hideki Osawa1, Yoshihito Ide, Shuichiro Hara
1Dept. of Surgery, Japan Community Health care Organization (JCHO) Osaka Hospital.
Gan to Kagaku Ryoho. Cancer & Chemotherapy
|January 20, 2021
Summary
A retroperitoneal mass was resected laparoscopically in a 59-year-old man. Histopathology confirmed leiomyosarcoma, highlighting laparoscopy as a viable option for complete tumor excision.
Area of Science:
- Surgical Oncology
- Diagnostic Imaging
- Pathology
Background:
- A 59-year-old male presented with a retroperitoneal mass detected preoperatively.
- The mass measured 50 mm and was located anterior to the right iliopsoas muscle.
Observation:
- Preoperative imaging included CT, MRI, and PET-CT, revealing a distinct tumor with moderate FDG uptake (SUVmax 5.39).
- Malignancy could not be excluded due to the tumor's size, necessitating diagnostic resection.
Findings:
- Laparoscopic tumor resection was performed, revealing a well-circumscribed mass without local invasion.
- Histopathological and immunostaining analyses confirmed the diagnosis of leiomyosarcoma.
Implications:
- Laparoscopic surgery offers detailed visualization of surgical margins, facilitating complete tumor removal.
- This case supports laparoscopy as a potential surgical approach for resectable retroperitoneal tumors like leiomyosarcoma.

