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目的 :旨在探讨鼻咽部低分化鳞状细胞癌 (PDSCC)的 MRI表现与分型 ,了解 PDSCC直接扩散 ,血行转移及淋巴转移关系。方法 :40例 PDSCC均经 MRI检查和病理证实 ;根据癌肿生长的部位和形态分成 类型进行分析。结果 :40例PDSCC中 37例向邻近组织直接扩展 ,5例血行转移 ,33例颈部淋巴结转移。统计学处理表明 32例腔内隆起型的肿瘤纵径越大 ,直接扩展侵犯邻近组织的数目越多 ,有显著性差异。结论 :PDSCC是鼻咽部高度恶性的癌肿 ,MRI分型各有特点 ,对该病的诊断、治疗和预防有重要价值
Objective: To investigate MRI findings and classification of nasopharyngeal poorly differentiated squamous cell carcinoma (PDSCC) and to understand the relationship between PDSCC direct diffusion, hematogenous metastasis and lymphatic metastasis. Methods: 40 cases of PDSCC were confirmed by MRI and pathology; according to the site of tumor growth and morphological classification analysis. Results: Forty cases of PDSCC directly extended to adjacent tissues, 5 cases of blood metastasis and 33 cases of cervical lymph node metastasis. Statistical analysis showed that the larger the longitudinal length of the 32 cases of intracavitary tumors, the more the number of directly infringing adjacent tissues, there was a significant difference. Conclusion: PDSCC is a highly malignant tumor of the nasopharynx. MRI classification has its own characteristics, which have important value in the diagnosis, treatment and prevention of the disease