Multimodality treatment programs for malignant pleural mesothelioma using high-dose hemithorax irradiation

Area of Science:

• Oncology
• Thoracic Surgery
• Radiation Oncology

Background:

• Malignant pleural mesothelioma is characterized by invasive, plate-like growth.
• Radical surgical resection is often not feasible.
• Treatment typically involves chemotherapy, radiotherapy, and debulking surgery.

Purpose of the Study:

• To prospectively evaluate five aggressive multi-modality treatment programs for malignant pleural mesothelioma.
• To assess the efficacy and toxicity of different hemithorax irradiation schedules and chemotherapy regimens.

Main Methods:

• One hundred patients with malignant pleural mesothelioma were enrolled between 1977 and 1989.
• Five distinct treatment programs involving combinations of chemotherapy (CYVADIC, Mitoxantrone, Epirubicin, Etoposide) and radiotherapy were administered.
• Tumor response was evaluated using a novel system.

Main Results:

• None of the evaluated treatment programs prevented local invasion or extrathoracic spread.
• Median survival increased from 8 to 12 months for patients completing protocols, but disease progression was universal.
• Severe radiation pneumonitis and fibrosis led to significant lung function loss.

Conclusions:

• Current multi-modality treatments offer limited benefit in controlling malignant pleural mesothelioma.
• International correlation of treatment response data is crucial for improving patient management and treatment evaluation.
• Further research is needed to develop more effective therapeutic strategies.