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目的:观察喉癌侵犯下咽部环后段的MRI表现,并为临床早期发现喉癌侵犯环后段提供依据。方法:回顾性分析18例喉癌侵犯环后段患者的MRI影像学资料,观察正常结构和层次的破坏情况以及肿瘤侵犯范围,找出喉癌侵犯环后段共同的表现。结果:喉癌侵犯环后段所在区域前壁的黏膜层、黏膜下脂肪层及肌层者为18例,侵犯后壁的黏膜层、黏膜下脂肪层及肌层者为14例,可以见到软组织肿块者15例,下咽腔消失者16例。既侵犯前壁全层又侵犯后壁全层,并伴有软组织肿块以及下咽腔消失者14例。结论:喉癌侵犯环后段时多伴有黏膜层、黏膜下脂肪层和肌层的破坏及信号的异常,并可见到软组织肿块,熟悉喉癌侵犯环后段的MRI表现,对于早期发现喉癌侵犯环后段尤为重要。
OBJECTIVE: To observe the MRI findings of laryngeal carcinoma invading the posterior segment of hypopharyngeal ring, and to provide evidence for the early laryngeal cancer invading the posterior segment of ring. Methods: MRI images of 18 cases of laryngeal carcinoma invaded posterior segment of ring were retrospectively analyzed. The damage of normal structure and level, the extent of tumor invasion were observed, and the common manifestations of laryngeal carcinoma invaded the posterior segment of ring were analyzed. Results: The larynx invaded the posterior segment of the anterior wall of the mucosa, submucosal fat layer and muscle were 18 cases of infiltration of the posterior wall mucosa, submucosal fat layer and muscle were 14 cases, you can see 15 cases of soft tissue mass, the disappearance of the lower pharynx in 16 cases. Both violations of the full thickness of the anterior wall and the entire wall of the posterior wall, accompanied by soft tissue mass and the disappearance of the lower pharynx in 14 cases. CONCLUSIONS: Laryngeal carcinoma invading the posterior segment often accompanied by mucosal layer, submucosal fat layer and muscle damage and signal abnormalities, and soft tissue mass can be seen, familiar with laryngeal cancer after the ring of the MRI section of the performance of the early detection of throat Cancer is particularly important after the violation of the ring.