Roger Waring's mediastinal node biopsies were sent for immediate frozen section and revealed metastasis of the primary tumor of the left upper lobe to the ipsilateral mediastinal nodes.Roger's TNM and staging classification are:

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T₄ = A tumor of any size that invades the mediastinum,heart,great vessels,trachea,esophagus,vertebral body,or carina;or presence of malignant pleural or pericardial effusion;or satellite tumor nodules within the ipsilateral primary tumor lobe of the lung.N₂ = Metastasis to ipsilateral mediastinal lymph nodes and subcarinal lymph nodes.M₁ = Distant metastasis is present.Stage IV = Any T,any N and M₁.Patients with lung cancer may have specific treatment based on their tumor,node,metastasis (TNM)characteristics.

Roger Waring's Mediastinal Node Biopsies Were Sent for Immediate Frozen