口腔颌面部的恶性肿瘤以癌为常见，肉瘤较少。癌肿中绝大多数为鳞状细胞癌，其次为腺性上皮癌，还有基底细胞癌、未分化癌、淋巴上皮癌等。
目的测定口腔颌面部恶性肿瘤患者外血周中NK细胞数目。
Objective To study the number of NK cells in peripheral blond of patients with malignant tumor in oral and maxillofacial regions.
目的：评价口腔颌面部恶性肿瘤患者的营养状况，探讨其发生机理。
Objective:The objective of the study is to evaluate the nutritional status of patients with oral maxillofacial cancer.
在口腔颌面部恶性肿瘤中，涎腺恶性肿瘤是一类较常见、发生率较高的恶性肿瘤。
Salivary gland malignant tumor is a significant malignant tumor of oral maxillofacial region with high incidence rate.
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