Head and Neck Malignant Tumors in the Area of Hiroshima Prefecture

Abstract

The 489 cases of head and neck malignant tumors seen in the area of Hiroshima prefecture between 1983 and 1985 were analyzed. Of the 489 tumors,131 were in the larynx,46 in the tongue,43 in the maxillary sinus,40 each in the hypopharynx and salivary glands,35 each in the mesopharynx and thyroid gland,26 in the epipharynx,22 in the nasal, paranasal cavities except for maxillary sinus and lip, oral spaces, respectively and 46 in other organs. Of the tumors,86% were cancer,11 % malignant lymphoma,2% sarcoma and 1% malignant melanoma.