Study on 23 distant metastasis cases without primary and neck disease in head and neck malignant tumors. With relation to clinical course and background.
4) Vikram, B., : Changing patterns of failure in advanced head and neck cancer. Arch Otoralyngol 110: 564-565, 1984.
5) Leemans, C.R., Tiwari, R., et al.: Regional lymph node involvement and its significance in the development of distant metastases in head and neck carcinoma. Cancer 71 : 452-456, 1993