1990 Volume 1990 Issue Supplement37 Pages 230-241
We made a clinical statistical study of 537 patients (269 males and 268 females) with malignant tumors of head and neck who had consulted three leading hospitals in Nara Prefectural between 1986 and 1988.
There were 494 cases of epithelial tumors and 43 cases non-epithelial tumors. The regions of epithelial tumors were the thyroid in 188 cases, the oral cavity in 97 cases, the larynx in 87 cases, the pharynx in 74 cases and the maxillary sinus in 25 cases.37 cases,86.0% of non-epithelial tumors were malignant lymphoma. There were 33 patients with double cancer.10 of them had laryngeal cancer (index cancer).