Presentation
Ongoing right L4 radiculopathy. Otherwise well.
Patient Data
![](https://prod-images-static.radiopaedia.org/images/4915227/5426613298b54a7d6c05c282e92614_thumb.jpg)
![This study is a stack](/packs/stack-YQKLCKBI.gif)
![](https://prod-images-static.radiopaedia.org/images/4916260/469e8be22a3ae9ac5bb3c0f6a4ab0b_thumb.jpg)
![This study is a stack](/packs/stack-YQKLCKBI.gif)
![](https://prod-images-static.radiopaedia.org/images/4915392/88d75a33b4feb6cc52277e28e0f49b_thumb.jpg)
![This study is a stack](/packs/stack-YQKLCKBI.gif)
![](https://prod-images-static.radiopaedia.org/images/4915611/af898414299684a1670c1aaebf67f1_thumb.jpg)
![This study is a stack](/packs/stack-YQKLCKBI.gif)
![](https://prod-images-static.radiopaedia.org/images/4915476/143a3bdd1839e1a53d5b0229da7660_thumb.jpg)
![This study is a stack](/packs/stack-YQKLCKBI.gif)
![](https://prod-images-static.radiopaedia.org/images/4916740/00ddfe7810d5aa473aaa043da4479c_thumb.jpg)
![This study is a stack](/packs/stack-YQKLCKBI.gif)
![](https://prod-images-static.radiopaedia.org/images/4915227/5426613298b54a7d6c05c282e92614_big_gallery.jpg)
Relatively subtle T1 isointense, T2 hyperintense lesion at the L3 vertebral body level in the central canal, which enhances avidly following contrast.
The relatively subtle findings on non-contrast sequences become obvious following contrast. The nature and relationship to the cauda equina and nerve roots are very well delineated on the post-gad sequences.
Case Discussion
Incidental finding of a intrathecal, extramedullary mass. The differential includes; schwannoma, neurofibroma or a metastasis. The former is in the most likely in this case, given the imaging characteristics. Note the similarity in appearances, especially on the post contrast sequences to a schwannoma at the IAM - avidly enhancing with small cystic areas of degeneration within.
The appearances were static on a repeat scan 5 months later.