text: The staging of the<unk><unk>  is based on the TNM system.<unk><unk> s staging starts at T3  always, as there is an invasion of the chest wall. Invasion of the vertebral body or the subclavian vessels is regarded as T4.
option_0: Pancoast tumor classification
option_1: Lymphadenopathy classification
option_2: Melanoma classification
option_3: Laryngeal cancer classification
option_4: Thymoma classification
option_5: Oral cancer classification
option_6: Hemoptysis classification
option_7: Bone or cartilage mass classification