Connor S E J, Gleeson M J, Odell E
Neuroradiology Department, Ruskin Wing, Kings College Hospital, Denmark Hill, London, SE5 9RS, UK.
J Laryngol Otol. 2008 Sep;122(9):986-9. doi: 10.1017/S0022215107000126. Epub 2007 Jul 19.
To describe a unique presentation of a predominantly extracranial glomus faciale tumour. To discuss the role of imaging in the differential diagnosis and evaluation of a hypervascular parotid mass. To review the previous literature concerning the glomus faciale tumour.
A 54-year-old woman presented with a six-month history of facial weakness, pain and a parotid mass. Ultrasound revealed a hypervascular parotid mass and pre-operative core biopsy suggested a paraganglioma. Computed tomography defined its deep extent and demonstrated involvement of the petrous temporal bone along the descending portion of the facial nerve canal with a pattern of permeative lucency. A tumour was surgically removed which arose from the facial nerve from the second genu to the proximal divisions within the parotid gland and histology confirmed a paraganglioma.
A facial nerve glomus faciale tumour should be considered in the differential diagnosis of a hypervascular parotid mass and may present in a predominantly extracranial location. Computed tomography will prove helpful in such a case in order to limit the differential diagnosis and to define the extent of skull base involvement.
描述一种主要位于颅外的面神经球瘤的独特表现。探讨影像学在富含血管的腮腺肿块鉴别诊断及评估中的作用。回顾此前关于面神经球瘤的文献。
一名54岁女性，有6个月面部无力、疼痛及腮腺肿块病史。超声显示腮腺有一富含血管的肿块，术前粗针活检提示为副神经节瘤。计算机断层扫描确定了其深部范围，并显示颞骨岩部沿面神经管下降段受累，呈弥漫性透亮模式。手术切除了一个起源于面神经从第二膝状部至腮腺内近端分支的肿瘤，组织学证实为副神经节瘤。
在富含血管的腮腺肿块鉴别诊断中应考虑面神经球瘤，其可能主要位于颅外。在此类病例中，计算机断层扫描有助于限制鉴别诊断范围并确定颅底受累程度。
