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Retroperitoneal Liposarcoma: The Giant Type.

Subhi Mansour1, Nassim Azzam1, Yoram Kluger1,2

  • 1Department of General Surgery, Rambam Medical Care Center, Haifa, Israel.

Journal of Medical Cases
|November 21, 2022
PubMed
Summary
This summary is machine-generated.

Retroperitoneal tumors are rare, often large, and can be malignant soft tissue sarcomas. This case highlights a giant well-differentiated liposarcoma, emphasizing the importance of early detection and surgical management.

Keywords:
Giant retroperitoneal sarcomaRare tumorRetroperitoneal tumorsSoft tissue sarcoma

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Area of Science:

  • Oncology
  • Surgical Pathology

Background:

  • Retroperitoneal tumors (RPTs) are rare, with two-thirds being malignant soft tissue sarcomas (STSs).
  • Liposarcoma is the most common STS in the retroperitoneum, accounting for 40% of cases.
  • Giant liposarcomas (>30 cm or >20 kg) are exceptionally uncommon.

Observation:

  • A 33-year-old male presented with abdominal distension and weight gain.
  • Imaging revealed a large retroperitoneal mass (40 cm).
  • Biopsy confirmed well-differentiated liposarcoma.

Findings:

  • Histopathology confirmed a 50 cm well-differentiated liposarcoma with dedifferentiated foci.
  • Surgical resection involved extensive organ removal.
  • Microscopically negative surgical margins were achieved.

Implications:

  • This case underscores the potential for extreme tumor growth in the retroperitoneum.
  • Aggressive surgical resection is crucial for managing giant liposarcomas.
  • Further research into the dedifferentiation process in liposarcomas is warranted.