What are the stages of mesothelioma? — Expert Video

Dr. Raphael Bueno, thoracic surgeon at the Brigham and Women's Hospital in Boston and a professor of surgery at Harvard Medical School, provides an overview of how mesothelioma is staged. He explains that pleural mesothelioma is commonly staged using the TNM system, which looks at tumor size and spread (T), lymph node involvement (N), and whether the cancer has metastasized (M), assessed through CT and PET scans and sometimes biopsy. Tumor volume and chest wall involvement also help guide staging. For peritoneal mesothelioma, staging is based on the amount of tumor spread across the abdomen, often measured using a region-based scoring system. Staging helps guide prognosis and treatment, with surgery considered for early disease and systemic therapy for more advanced stages.

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