Presentation
Left flank pain for a few days.
Patient Data
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![This study is a stack](/packs/stack-YQKLCKBI.gif)
![](https://prod-images-static.radiopaedia.org/images/4745949/24dab45d0cb16e174fa90ce70fb5d1_thumb.jpg)
![This study is a stack](/packs/stack-YQKLCKBI.gif)
![](https://prod-images-static.radiopaedia.org/images/4745673/03aca85af91e7792970205ff52a7ca_thumb.jpg)
![This study is a stack](/packs/stack-YQKLCKBI.gif)
![](https://prod-images-static.radiopaedia.org/images/4746229/ae870be2a03835a554e01b2d34bcef_thumb.jpg)
![This study is a stack](/packs/stack-YQKLCKBI.gif)
![](https://prod-images-static.radiopaedia.org/images/4745922/26954e32a95b75568e111c846c42a6_thumb.jpg)
![This study is a stack](/packs/stack-YQKLCKBI.gif)
![](https://prod-images-static.radiopaedia.org/images/4745220/710daff43c7a04537e5d37506216ca_big_gallery.jpg)
CT shows a typical star shaped (toy jack) stone in the bladder. Also demonstrates an enlarged prostate and left ureteral calculus causing hydroureteronephrosis.
![](https://prod-images-static.radiopaedia.org/images/4746953/76a10fa46f33b7e83163e706571385_big_gallery.jpg)
The toy jack from which this urinary tract calculi gets its name. Image credit: Bovlb. See case discussion for full attribution.
Case Discussion
Jackstone calculi are associated with urinary stasis or infection and are usually calcium oxalate dihydrate stones.
Attribution
Original image: https://commons.wikimedia.org/wiki/File:Jacks.jpg
Author: Bovlb
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