HOME > Weekly Case > Weekly Case
Weekly Case
종결
Case No. 182
0000-00-00~0000-00-00
출제자 : 관리자
Hit : 321
| Period | 0000-00-00~0000-00-00 |
|---|---|
| Diagnosis | |
| Clinical information | 63세 여자. 1년전부터 간헐적 두통, 2일전 오심/구토, 하루전 시작된 의식변화로 내원 |
| Discussion | Trigeminal Schwannoma About 0.2% of all intracranial tumors and about 2%-3% of all intracranial schwannomas Majority develop at the gasserian ganglion May grow primarily in the parasellar region or extend posteriorly through the porus trigerninus into the posterior fossa. Tumor extension into the pterygoid fossa or paranasal sinuses occurs in 10% of cases. Erosion of the underlying bone and enlargement of the foramen ovale, foramen rotundum, or the superior orbital fissure Image features : Dumbbell-shaped configuration with smooth margin : Usually hypointense relative to gray matter on T1WI but occasionally isointense, with homogeneous enhancement : Almost always hyperintense on T2WI : Large tumors can have heterogeneous signal intensity due to degenerative changes RadioGraphics 1995; 15:795-811 |
| Correct answer |
Correct AnswerSemi-Correct Answer |