Radiopaedia.org is a free educational radiology resource with one of the web's largest collections of radiology cases and reference articles.

Case of the Day

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Urolithiasis: massive

Contributed by Dr Ian Bickle

When it comes to kidneys stones they do not come much bigger than this. On the initial plain radiograph, it seems hardly comprehensible despite their projection over an enlarged reniform outline. Retained colonic barium was the other initial consideration, but this was dismissed. CT-KUB illustrates the magnitude of the urolithiasis.

What is Radiopaedia.org?

Radiopaedia is a rapidly growing open-edit educational radiology resource which has been primarily compiled by radiologists and radiology trainees from across the world. Our mission is to create the best radiology reference, and to make it available for free, forever. Find out more.

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You can update (and write) articles on Radiopaedia.org. If you see a typo or missing link to an existing article, it's easy to make an edit as soon as you see it. The best way to start is to go to our Editing Radiopaedia Articles Learning Pathway

Content types

Radiopaedia.org comprises two fundamental content types (articles and cases) and playlists (ordered collections of cases). 

Articles

Articles are collaborative efforts to provide a single canonical page on any and all topics relevant to the practice of radiology. Every edit counts, so don't hesitate to jump in and share what you know. Find out more

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Create and share playlists to help advance medical information around the globe. Curate focused playlists on specific topics for presentations to help other medical professionals teach radiology, or formulate quiz playlists to support medical students in their education. Find out more

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The accuracy of Radiopaedia.org content is overseen by a dedicated group of volunteer editors who constantly review additions and changes to articles and cases, something that is facilitated by being spread around the globe through a variety of time zones.

Our editors also draw upon the knowledge of our expert advisers. Our expert advisers are known to not only be experts in their field and educators but to also support the radiology free open access medical education movement (#FOAMrad).

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