Postoperative brain metastases in soft tissue sarcomas

Area of Science:

• Oncology
• Surgical Oncology
• Neuro-oncology

Background:

• Brain metastases (BMs) from soft tissue sarcoma (STS) are infrequent but associated with poor prognosis.
• Identifying risk factors for BMs in STS is crucial for improving patient outcomes.

Purpose of the Study:

• To investigate the incidence and survival rates of BMs in STS patients.
• To identify factors associated with brain metastasis-free survival (BMFS) after surgery for STS.

Main Methods:

• Retrospective review of 187 STS patients treated with definitive surgery.
• Analysis of BMFS and overall survival (OS) after BM.
• Statistical investigation of factors influencing BMFS, including neurofibromatosis-1 (NF-1).

Main Results:

• Eight out of 187 STS patients (4.3%) developed BMs at a median of 18.2 months post-surgery.
• The 5-year BMFS rate was 95.2%, with a 3-month OS rate after BM of 25.0%.
• NF-1, malignant peripheral nerve sheath tumor (MPNST) histology, and primary tumor size ≥5 cm were significantly associated with increased BM incidence.

Conclusions:

• Postoperative BMs in STS are notably higher in patients with NF-1, MPNST, and large primary tumors.
• Careful surveillance for BMs is essential in NF-1 patients, particularly those with co-existing metastases.
• Early detection and management strategies are vital for improving survival in STS patients with BMs.