
At the 2026 ASTRO Annual Meeting, Marcio A. Fagundes, MD, discussed when proton therapy is most justified over photon approaches in prostate cancer.
After obtaining a thoracentesis in a 63-year-old woman who presented with significant dyspnea, you send the pleural fluid for analysis which shows malignant cells present consistent with a lung primary cancer.
What stage would her cancer be at this point?






