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上颌窦癌是一种难治的恶性肿瘤。病人在就诊前常常已属晚期。由于上颌窦为一空腔,肿瘤在造成压力前体积已很大。在美国,约80％上颌窦癌为鳞癌,20％为腺癌。症状常见于肿瘤首发部位,并累及窦基底、牙齿或面颊。最常见的症状为牙齿和面部不适,面颊和颊沟内出现肿块。如肿瘤发生或扩展到窦的较高部位,症状为眼突出、视力丧失与复视。鼻症状为阻塞。如果肿瘤侵及鼻腔,可
Maxillary sinus cancer is a hard-to-treat malignancy. Patients often have advanced stages before attending a doctor. Because the maxillary sinus is a cavity, the tumor has a large volume before it causes stress. In the United States, about 80% of maxillary sinus cancers are squamous cell carcinomas and 20% are adenocarcinomas. Symptoms are common in the first site of the tumor and involve the sinus floor, teeth or cheeks. The most common symptoms are tooth and facial discomfort, with lumps in the cheeks and cheeks. If the tumor develops or spreads to the upper part of the sinus, the symptoms are prominent eyes, loss of vision, and diplopia. Nasal symptoms are blocked. If the tumor invades the nasal cavity,