Kawakami R, Kaneko T, Kadoya M, Matsushita T, Fujinaga Y, Oguchi K, Kurashina K
Department of Radiology, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto 390-8621 Japan.
Dentomaxillofac Radiol. 2004 Jul;33(4):259-61. doi: 10.1259/dmfr/93898716.
In this report, we present CT and MRI findings of a case of a schwannoma that developed in the floor of the oral cavity. A 49-year-old woman visited our hospital with a painless swelling in the oral floor. CT and MRI revealed a well circumscribed oval mass in the sublingual space, which showed cystic degeneration in most of the lesion. In addition, a thickened wall that strongly enhanced after injection of contrast medium and formation of fluid level were observed in the mass. The mass was removed and was histopathologically diagnosed as schwannoma. Only a few cases of schwannoma in the oral floor have been reported. However, when the characteristic findings are observed on CT and MRI, schwannoma should be added to the differential diagnosis.
在本报告中，我们展示了一例发生于口腔底部的神经鞘瘤的CT和MRI表现。一名49岁女性因口腔底部无痛性肿胀前来我院就诊。CT和MRI显示舌下间隙有一个边界清晰的椭圆形肿块，大部分病灶呈囊性退变。此外，肿块内可见注射造影剂后明显强化的增厚壁及液平面形成。肿块被切除，组织病理学诊断为神经鞘瘤。口腔底部神经鞘瘤仅有少数病例报道。然而，当在CT和MRI上观察到特征性表现时，神经鞘瘤应列入鉴别诊断。
