Presentation
Headache.
Patient Data
Age: 40 years
From the case:
Thrombosed berry aneurysm
![](https://prod-images-static.radiopaedia.org/images/14088777/fbc3ab0fdacb1295b8bb99be2b5c1d_thumb.jpeg)
![](https://prod-images-static.radiopaedia.org/images/14088825/12fdc9c59e7c0783f5028c255697a7_thumb.jpeg)
![](https://prod-images-static.radiopaedia.org/images/14088745/ba3da39bb834b535a2a739675107c4_thumb.jpeg)
![](https://prod-images-static.radiopaedia.org/images/14088793/76a758ce5dc03e45be72087de52205_thumb.jpeg)
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Info
![](https://prod-images-static.radiopaedia.org/images/14088777/fbc3ab0fdacb1295b8bb99be2b5c1d_big_gallery.jpeg)
Partially thrombosed left MCA berry aneurysm is seen as a heterogeneous rounded structure with blood products resulting in a signal drop. The MRA shows the non-thrombosed part of the aneurysm located in the communicant posterior cerebral artery causing mass effect on the midbrain.
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![](https://prod-images-static.radiopaedia.org/images/14088785/fd6d38631d257bcf79766f99909e98_big_gallery.jpeg)
A CT performed 4 months after, shows a decrease in size.