摘要
目的 :探讨 MRI在嗅神经母细胞瘤的诊断和分期中的价值。方法 :回顾性分析 4例经手术病理证实的嗅神经母细胞瘤的 MRI表现。扫描序列为 SE序列 ,且均行 Gd- DTPA增强扫描。结果 :按 Kadish分期标准 :本组 4例均为 C期 ,侵犯范围为鼻腔 4例 ,同侧筛窦及眼眶均受侵犯 2例 ,蝶窦、上颌窦和前颅窝均受侵 1例 ,眼眶及前颅窝均受侵者 1例。 MRI、T1 加权像呈低、中等信号 ,T2 加权像呈中等、高信号 ,病灶强化均匀或不均匀。结论 :MR扫描可界定嗅神经母细胞瘤的侵犯范围 ,冠状面扫描有助于显示眶内、颅内病变 ,必不可少。 MR扫描有利于肿瘤的 Kadish分期 ,从而指导临床制定合理的治疗方案。
Objective To assess the the role of MRI in the diagnosis and staging of esthesionuroblastoma.Methods 4 cases of esthesionuroblastoma proren by surgeyy and or pathology were analyzed retrospectively.MRI was done in 4 cases with SE pulse sequence,T 1 and T 2,weighted and Gd-DTPA enhanced T 1 weighted images.Results According to Kadish staging,There were 4 case with stage C.Tumor involvement included nasal cavity in 4 cases,ipsilateral ethmoid sinus and orbit in 2 cases,sphenoid sinus,maxillary sinus and anterior cranial fossa in 1 case,orbit and anterior cranial fossa in 1 case.In T 1 weighted MRI sean,Tumor signal was lower than that of brain tissue,In T 2 Tumor signal was weighter than that of brain tissue,After injection of Gd-DTPA,all tumors were enhanced in 4 cases.Conclusion The aim of MRI is to define the area of tumor involvement and tumor staging.Coronal scan is mandatory since it is very helpful in assesing intraobital and intracranial extension,and in planning the optional treatment for the clinics.
出处
《吉林医学》
CAS
2001年第1期29-30,共2页
Jilin Medical Journal
