鼻咽部淋巴瘤的CT诊断

CT diagnosis of the lymphoma of nasopharynx

目的探讨鼻咽部淋巴瘤的CT表现,提高对鼻咽部淋巴瘤的影像学认识。方法对经病理证实的17例鼻咽部淋巴瘤病例的CT表现做回顾性分析。结果17例病例均为非霍奇金淋巴瘤,表现为鼻咽顶后壁及侧壁不规则软组织肿块,其中6例病灶局限,境界清楚,11例呈浸润生长,病变范围较大;CT见病灶密度相对均匀,增强扫描病灶轻度强化,相邻咽后壁头长肌及颅底骨质受侵少,多伴有多发淋巴结肿大,肿大淋巴结密度、信号均匀,中心坏死少。结论鼻咽部淋巴瘤有一定的影像学特征,CT扫描能清楚显示鼻咽部淋巴瘤的部位、形态、范围,有无颈部淋巴结转移和周围组织的侵犯情况,有助与鼻咽癌、鼻咽腺样体增生的鉴别。

Objective To investigate CT findings of the lymphoma of nasopharynx, so as to improve the understanding and knowl- edge. Methods 17 cases were all pathologically proved,their CT manifestations were analyzed respectively. Results All of the cases were non-Hodgkins lymphoma（ NHL）. Their performance was soft-tissue on the hanging-posterior and lateral wall of nasopharynx. 6 cases of them had clear boundaries, and 11 cases of them displayed invasion. The density of lymphoma was homogeneous and were slightly enhanced in CT. The lougus capitis invased and skull bottom destroy near the lesions were seldom. Cervical lymphoid metastases were found in most cases, and the density as homogeneous, most metastases did not appeared as necrosis or cyst. Conclusion The lymphoma of nasopharynx has characteristic imaging features in CT,which can provide the informations of the position, shape and range of lymphoma of nasopharynx and metastases in lymph.nodes and its surrounding tissue invaded changes. They have high clinical value in differential diagnosis of nasopharyngeal carcinoma and adenoid hypertrophy.