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Metastatic pattern in non-resectable non-small cell lung cancer
L E Stenbygaard1, J B Sørensen, H Larsen
1Department of Oncology, Herlev University Hospital, Copenhagen, Denmark.
Acta Oncologica (Stockholm, Sweden)
|February 9, 2000
Summary
Autopsies reveal common metastatic sites in non-small cell lung cancer (NSCLC) patients. Advanced NSCLC patients had more widespread metastasis at autopsy compared to those with locally advanced disease.
Area of Science:
- Oncology
- Pathology
Background:
- Non-small cell lung cancer (NSCLC) is a leading cause of cancer death.
- Understanding the metastatic patterns of NSCLC is crucial for improving patient outcomes.
- Autopsy studies provide detailed insights into the final stages of cancer spread.
Purpose of the Study:
- To describe the autopsy-detected metastatic pattern in patients with non-resectable NSCLC.
- To evaluate how pretreatment variables and treatment outcomes influence metastatic spread.
- To identify the most frequent sites of metastasis in NSCLC.
Main Methods:
- Analysis of data from eight phase II chemotherapy trials (1985-1993).
- Review of 51 autopsies performed on 337 treated patients with non-resectable NSCLC.
- Statistical analysis to correlate pretreatment variables and survival with metastatic sites.
Main Results:
- Common metastatic sites included mediastinal lymph nodes (84%), pleura (51%), liver (47%), bone (34%), and brain (32%).
- Patients with initially metastatic NSCLC had significantly more extrathoracic and total metastatic sites at autopsy.
- Autopsied patients had shorter median survival than non-autopsied patients.
Conclusions:
- Mediastinal lymph nodes, pleura, liver, bone, and brain are frequent sites of metastasis in advanced NSCLC.
- Initial metastatic status is a significant predictor of the extent of metastatic spread at autopsy.
- Further research is needed to elucidate factors influencing NSCLC metastasis.