STATISTICAL ANALYSIS OF MALIGNANT MELANOMA OF NASAL CAVITY AND PARANASAL SINUSES IN JAPAN

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  • SAITO HISAKI
    Department of Otorhinolaryngology, Hirosaki University, School of Medicine
  • HOZAWA JIRO
    Department of Otorhinolaryngology, Hirosaki University, School of Medicine
  • YAMAGAMI MINAKO
    Department of Otorhinolaryngology, Hirosaki University, School of Medicine

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  • 本邦における鼻副鼻こう悪性黒色しゅ報告例の検討
  • ホンポウ ニ オケル ビフクビクウ アクセイ コクショクシュ ホウコクレイ ノ

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Abstract

Statistical analysis of malignant melanoma of nasal cavity and paranasal sinuses was performed on 143 cases which are composed of 11 cases treated at Hirosaki University from 1965 to 1981 and 132 cases collected from Japanese literature during the same period.<br>Age ranged from 1 to 85 years old and peak incidence was observed in the sixth and seventh decade. Average age was 58.8 years old and the male to female ratio was 1.24 to 1. A yearly incidence in average was 8.4 cases and showed an increase in the recent years. Primary lesion was observed more frequently in nasal cavity than paranasal sinuses, and the ratio was 6.4 to 1. Left to right ratio was 1.7 to 1. Lymph nodes or distant metastasis was observed in 62.5%, Only 5 patients survived more than 5 years and 46 patients died within 5 years.

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