Head and Neck Imaging
Analysis on the Misdiagnosis of 6 Cases with Neurilemmoma by CT
Author：HE Xu-cheng, QI Lian-jun, JI Hui, ZHAO Li
affiliation： Department of Radiology Armed Police General Hospital 100039 Beijing
PDFAbstract
Objective To investigate CT characteristics of facial nerve schwannoma CT and analyze reasons of misdiagnosis. Methods Clinical data of 6 cases with facial schwannoma which was pathologically confirmed but misdiagnosed by CT was retrospectively analyzed. Results All the 6 cases went to hospital for hearing loss, facial nerve paralysis and pulsatile tinnitus. The temporal bone CT scan showed large soft tissue masses of temporal bone, temporal bone destruction, facial nerve canal expansion and soft tissue density shadow in tympanic cavity, and no obvious cystic degeneration and necrosis. Enhanced scan showed different degrees of enhancement. All the 6 cases were confirmed of facial nerve schwannoma by surgical pathology and immunohistochemistry examination, of which 4 cases were misdiagnosed as glomus jugular tumor and 2 cases as cholesteatoma. Conclusion Lesions manifest as larger tumors of temporal bone and bone destruction and combined with facial nerve canal expansion on CT images can suggest the diagnosis of facial nerve schwannoma.
【Keyword】Neurilemmoma; Facial Nerve Canal; Tomography; Spiral Computed; Misdiagnosis
【Chart number】R322.8
【Document Identification Number】A
【DOI】10.3969/j.issn.1672-5131.2015.04.05
Chinese journal of CT and MRI
th13Volume， th 4 Issue
2015Year04Month
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