malignant neoplasm of nasopharynx TNM staging regional lymph node (N)
malignant neoplasm of nasopharynx tnm staging regional lymph node (n)
malignant neoplasm of nasopharynx TNM staging regional lymph node (N) (diagnosis)
malignant neoplasm of nasopharynx tnm staging regional lymph node (n) (diagnosis)