下顎歯肉扁平上皮癌予後不良例についての臨床的検討

概要

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Thirty patients of squamous cell carcinoma on the lower alveolus and gingiva were treated by surgical management for initial treatment during a 6 year period. Twenty seven patients received segmental resection of the mandible and 3 patients received hemimandibulectomy. No patient received marginal resection of the mandible.<BR>Recurrence on primary lesion, metastases of the neck or distant metastases were found in 8 out of 30 patients. Two out of 8 patients had recurrence on primary sites and neck region. One out of 8 patients showed recurrence on primary site and distant metastasis. Three out of 8 patients had distant metastases. Four out of 29 patients who received curative operation had recurrence on primary region in soft tissue adjacent to surgical margins. Three out of 4 patients were at T2 stage. Five patients with cervical metastases of N3 stage developed subseqently recurrence of primary region, cervical metastases or distant metastases.<BR>The comparatively low recurrence rate for segmental resection of mandible found in this series suggest that our treatment planning with neck dissection should be considered as the initial form of therapy except for patients at T1NO stage.
社団法人日本口腔外科学会の論文