Clinical Parotid Carcinoma Analysis

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  • 耳下腺癌４８例の臨床統計
  • 臨床 耳下腺癌48例の臨床統計
  • リンショウ ジカセンガン 48レイ ノ リンショウ トウケイ

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We clinically analyzed 48 consecutive retrospective cases of parotid carcinoma initially treated between 1988 and 2007. Subjects were 30 males and 18 females ranging from 5 to 85 years old (average: 57.9 years). Of the 12 histological types seen, the most common was mucoepidermoid carcinoma, seen in 12 subjects (25.0%). We studied their survival based on 5 potential prognostic factors-stage, T stage, neck metastasis, facial nerve palsy, and malignancy grade-together with features of mortality and recurrence.<br> Overall 5-year disease-specific survival was 71.2% and 10-year survival 54.9%.<br> Survival rates were significantly lower in stage IV and high-grade malignancy groups than in stage I-III and low-grade malignancy groups. T stage, neck metastasis, and facial nerve palsy tended to compromise survival. Recurrence developed in 2 subjects, in whom significant recurrence risk factors were stage III-IV (particularly, stage IV), T3-4, and high-grade malignancy. Of 18 deaths, causes were distant failure in 11 and local failure in 5. None died of nodal failure.<br> Analysis of these prognostic factors is important in selecting appropriate surgery and in determining indications for postoperative radiotherapy and chemotherapy, leading to better treatment outcome in those with parotid carcinoma.<br>

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