Abstract
A retrospective investigation was performed on 33 patients with submandibular gland tumors treated between 1998 and 2005. The tumors consisted of 17 benign and 16 malignant types. Fifteen of 16 malignant tumors were cancerous, and the most common histological type was adenoid cystic carcinoma (33.3). The accuracy of FNAB (fine-needle aspiration biopsies) was 84%, eight of 12 aspirates from malignant tumors were correctly diagnosed by FNAB, for a sensitivity of 66.7%, while all of 13 aspirates from benign tumors were correctly diagnosed by FNAB, for a specificity of 100%. The five-year survival rate calculated by the Kaplan-Meier method was 81.3% in 15 patients with submandibular gland cancer. Pathological neck lymph node metastasis in all NO cases was detected in level 2, so we concluded that supraomohyoid neck dissection might be suitable for NO cases of submandibular gland cancer. To improve the prognosis of submandibular gland cancer, postoperative chemotherapy may be necessary for T3 and T4 cases.
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