Malignant tumor in the otophone is rare, compared with tumor in other organs, and among cancers in the otophone in Europe and the United States, cancer in the external ear is more common than in the middle ear. In Japan, however, case of cancer in the external ear is much less than in the middle ear. It is known that the metastasis of cancer in the otophone to the lymphatic glands is comparatively less.
Since the author experienced a case of auricle cancer which primarily occurred on the left side auricular triangle cavity of a seventy-six-years old female and cured operatively, a research was made on the cases which were reported in the bibliographies in Japan.
It was found that the location of this cancer was mostly at the upper part of the helix, and the primary lesion was mostly the nodule, or small phyma. The patients were comparatively older people, and male was overwhelmingly more than female. Most cases showed histologically squamous cell carcinoma. The metastasis to the lymphatic glands was found in only two cases, and not at all in other cases.
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