malignant neoplasm of oropharynx TNM staging regional lymph nodes (N)
malignant neoplasm of oropharynx tnm staging regional lymph nodes (n)
malignant neoplasm of oropharynx TNM staging regional lymph nodes (N) (diagnosis)
malignant neoplasm of oropharynx tnm staging regional lymph nodes (n) (diagnosis)