Skull Base Erosion in Nasopharyugeal Careinoma: Detection by MRI
10.3321/j.issn:1003-3289.2001.05.015
- VernacularTitle:鼻咽癌颅底侵犯的MRI
- Author:
Ruodi WANG
;
Mingwei MAO
- Publication Type:Journal Article
- From:
Chinese Journal of Medical Imaging Technology
2001;17(5):428-429
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study MRI characteristics and value in the diagnosis of nasopharyngeal carcinoma with skull base erosion. Methods 86 cases of nasopharygeal carcinoma with positive nasopharyngeal pathology and symptoms of skull base erosion were selected. Axial T1WI, T2WI and coronal, sagital T1WI were performed. 47 cases had axial, coronal and sagital T1WI examination post Gd-DTPA injection. Results Areas of skull base involvement were as follow: 56 cases with pterygoid process, 54 with clivus, 28 with foramen ovale (including sphenoid wing), 27 with petrous apex, 1 with occiptal bone. 71 cases had more than one area involvement. There are four patterns in our group: ①Defect in the signal avoid cortex of skull base; ②High signal intensity of marrow was replaced by tumor; ③Contrast enhancement in abnormal bone; ④String like enhancement passing nerve foramen in skull base. 44 cases included intracranial abnormal. Conclusion MRI is the preferred technique in dementstrating skull base involvemetn of nasopharyngeal carcinoman.
