[A Case of Retroperitoneal Liposarcoma].

Area of Science:

• Oncology
• Vascular Surgery
• Neurology

Background:

• Retroperitoneal tumors are rare and can reach significant sizes.
• Dedifferentiated liposarcoma is an aggressive soft tissue sarcoma.
• Surgical resection is the primary treatment for resectable retroperitoneal tumors.

Observation:

• A 52-year-old male presented with abdominal distension due to a large retroperitoneal tumor.
• Enhanced CT revealed a 35 cm, 6,860g tumor encasing the left internal iliac artery and kidney.
• The patient underwent en bloc resection of the tumor and left internal iliac artery.

Findings:

• Histological diagnosis confirmed dedifferentiated liposarcoma.
• Postoperatively, the patient developed left lower limb paralysis.
• Neurological assessment suggested a lumbosacral etiology for the paralysis.

Implications:

• Internal iliac artery resection in tumor removal may lead to ischemic neuropathy.
• Limb paralysis following major abdominal surgery requires careful neurological evaluation.
• This case underscores the complex management of large retroperitoneal sarcomas and their associated complications.