杨连海 (300211 天津医科大学第二医院放射科)
关键词:囊尾蚴病;眶疾病;诊断显像
【摘要 】 目的 总结眶内囊虫病的影像学表现,评价 B超、 CT和 MRI对其诊断的优势与限度。方法 将6例眶内囊虫病者的 B超、CT和 MR影像学表现与手术病理结果进行对照分析。结果 眶内囊虫病在眶内形成肉芽肿。 B超见肿块内有低回声液性暗区(囊泡)和点状强回声头节,并可见特异性的虫体蠕动;CT可见点状高密度头节和低密度囊泡影,CT对头节的显示率较 B超高; MRI对头节显示不清,仅可见囊泡,但对眶内囊虫病累及范围和程度的显示较 B超和CT更清楚。结论 对眶内囊虫病的定性诊断,CT和 B超较 MRI更具优势; MRI在眶内病变的鉴别诊断中有其独特的作用。
Imaging diagnosis of intraorbital cysticercosis
HAN Yue, LIAN Zongcheng, YANG Lianhai.
Department of Radiology, the Second Hospital, Tianjin Medical University, Tianjin 300211, China
【Abstract 】 Objective To summarize imaging manifestations of intraorbital cysticercosis and assess the diagnostic advantage and limitation of sonography,CT and MRI. Methods 6 cases with intraorbital cysticercosis proved by surgery were studied with sonography,CT and MRI. Results Granulomas were formed in the orbit in all cases. Characteristic imaging findings included: sonography revealed low reflective cystic area and dotted-like high reflective scolex within the mass, and specific movement of larva; CT scan demonstrated dotted-like high density scolex and low density cyst, which were much better visualized than sonography; MRI displayed the cyst well, but the scolex was not clearly shown . MRI provided more useful information about extent and degree of lesion than CT and sonography. Conclusion CT and sonography were superior to M RI in diagnosis of intraorbital cysticercosis. MRI played an important role in differential diagnosis of the entity.
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