内淋巴囊肿瘤的CT和MRI影像学分析  

CT/MRI imaging analysis of endolymphatic sac tumor

作　　者：李飞[1] 冯炜[1] 安攀 崔光彬[1] LI Fei;FENG Wei;AN Pan;CUI Guangbin(Department of Radiology,Tangdu Hospital,Air Force Medical University,Xi'an 710038,China)

机构地区：[1]中国人民解放军空军军医大学唐都医院放射科,陕西西安710038

出　　处：《医学影像学杂志》2023年第3期397-400,共4页Journal of Medical Imaging

摘　　要：目的探讨内淋巴囊肿瘤(endolymphatic sac tumor,ELST)的影像学特点,提高对本病的认识和术前诊断的准确率。方法选取4例经术后病理证实的ELST的临床及影像学表现,对患者随访并观察肿瘤预后及患者生存情况。结果病灶主体位于颞骨岩部中后方的血供丰富的软组织肿块,CT表现为溶骨性骨质破坏,其内残存骨质;MRI表现为T_(1)WI/T_(2)WI均呈混杂信号,抑脂序列信号未见减低,其内可见血管流空,增强后呈欠均匀明显强化。结论ELST较罕见,其有特定的发病部位、临床表现,CT及MRI检查可对ELST提供丰富的影像学依据,有助于临床诊断及鉴别诊断。Objective To investigate the imaging features of Endolymphatic sac tumor(ELST),and to improve the understanding and preoperative diagnostic accuracy of this disease.Methods The clinical and imaging findings of 4 cases of ELST confirmed by operation and pathology were retrospectively analyzed,and the patients were followed up to observe the prognosis and survival.Results The clinical symptoms of ELST included ear canal purulent,hearing loss,tinnitus and cerebral nerve involvement.The ELST was a soft tissue mass with abundant blood supply centered in the middle and posterior temporal bone rock.CT showed honeycomb or osteolytic destruction with residual bone.MRI showed mixed signals on T_(1)WI/T_(2)WI,no decrease in the lipid inhibition sequence signal,and empty vascular flow was observed in the MRI,which showed uneven and obvious enhancement after enhancement.Conclusion ELST is rare and has specific site and clinical manifestations.CT and MRI examination can provide abundant imaging basis for ELST,which is helpful for clinical diagnosis and differential diagnosis.

关 键 词：内淋巴囊肿瘤 磁共振成像 体层摄影术 X线计算机 

分 类 号：R739.61[医药卫生—肿瘤] R445.2[医药卫生—临床医学]