Recurrence patterns by treatment modality of carcinomas of the floor of the mouth and oral tongue.
Recurrence patterns were examined by stage of disease and treatment modality in 139 patients with 141 squamous cell carcinomas of the floor of the mouth and oral tongue, reflecting an 11-year experience at two hospitals. Treatment categories included surgery, irradiation, and combined treatment. Patients who were without evidence of disease at two years, or at the time of death, were considered cured. Cures were achieved in 87 per cent of patients with Stage I disease, 83 per cent with Stage II, 40 per cent with Stage III, and 34 per cent with Stage IV. Similar results were achieved by irradiation alone and by surgery alone in controlling early lesions. Combined treatment offered the best chance of cure for patients with advanced disease. Failure was most often associated with persistence at the primary site. No patient with advanced disease was salvaged after local treatment failure. One of 51 patients who received prophylactic treatment of the neck in the absence of clinical evidence of metastases had a regional treatment failure, while seven of 26 such patients who did not receive prophylactic treatment developed regional metastases. The ten-year adjusted survival rate, as calculated by the actuarial method, was 53 +/- 4.7 per cent. Forty-two multiple primary lesions were found in the 139 patients.
D002294:Carcinoma, Squamous Cell / Q000401:mortality / Q000628:therapy*; D005260:Female; D006801:Humans; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D009060:Mouth Floor; D009062:Mouth Neoplasms / Q000401:mortality / Q000628:therapy*; D037981:Neck Dissection; D009364:Neoplasm Recurrence, Local; D009367:Neoplasm Staging; D011879:Radiotherapy Dosage; D012189:Retrospective Studies; D014062:Tongue Neoplasms / Q000401:mortality / Q000628:therapy*