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本文报道多原发癌4例。例1～3第一原发癌为鼻咽癌,例4第一原发癌为鼻腔、上颌窦和筛窦 (右) 乳头状瘤恶性变。4例中共有原发癌9个,例4为三发癌,其中上皮性癌8个。第二、三原发癌发生的部位:外耳2个,顶部软组织,肺、喉各1个。对多原发癌的确定标准、分类进行扼要讨论。并指出多原发癌的诊断必须依靠活检或探查手术。治疗与分别生长的单一癌相同,应采用根治性治疗方法。勿轻易将多原发癌诊断为
This article reports 4 cases of multiple primary cancers. The first primary cancer of Examples 1-3 was nasopharyngeal carcinoma, and the primary cancer of Example 4 was nasal cavity, maxillary sinus, and ethmoid sinus (right) Papilloma malignant transformation. In 4 cases, there were 9 primary cancers, and 4 cases were 3 cancers, including 8 epithelial cancers. The second and third sites of primary cancer were: outer ear 2, top soft tissue, lung and larynx. We will discuss the criteria and classification of multiple primary cancers. And pointed out that the diagnosis of multiple primary cancers must rely on biopsy or exploration surgery. The treatment is the same as that of a single cancer that grows separately. A radical treatment should be used. Do not easily diagnose multiple primary cancers as