Clinicostatistical investigation on Metastasis of Oral Squamous Cell Carcinoma. 1. Histological Metastasis to the Cervical Lymph Node at the Initial Treatment.:1. Histopathological Metastasis to the Cervical Lymph Node at the Initial Treatment

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A clinicostatistical investigation was carried out 349 patients with oral squamous cell carcinoma at the Second Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Osaka University from January 1978 to December 1992. Metastasis to the cervical lymph nodes there of at the initial treatment was histologically confirmed in 66 patients (18.9%).<BR>The most significant factors, influencing the frequency of metastasis to the cervical lymph nodes, were primary site, T-stage, histological malignancy points (Jakobsson's) and clinical findings of the primary tumor.<BR>The floor of the mouth had the highest frequency of metastasis (29.7%), and the maxillary sinus had the lowest frequency (10.0%). The tongue was the most common site of primary lesions (40.0%), which metastatic rate of cervical lymph nodes was 14.8%.<BR>The majority of the involved nodes were submandibular lymph nodes (76% in patients with metastasis) and superior internal jugular nodes. But in some patients with tongue carcinoma, metastasis was found at lower cervical lymph nodes.
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