<qa>  What is the definition of a clinically positive node?- The tumor must be clinically Stage II T3-4 N0 with N0 being defined as all imaged lymph nodes are 1.0 cm or Stage III T1-4 N1-2 with the definition of a clinically positive node being any node 1.0 cm. Stage of the primary tumor may be determined by ultrasound or Magnetic Resonance Imaging MRI. Computed Tomography CT scan is acceptable provided there is evidence of T4 andor N1-2 disease. 