Image credits
All radiographs on this site are reused under Creative Commons licences or public-domain dedications from Wikimedia Commons. We are grateful to the authors listed below.
Spoiler warning: original file titles often name the diagnosis. Attempt the cases first.
Images have been resized and re-encoded for the web (and cropped where noted). Adaptations of ShareAlike (BY-SA) images are shared under the same licence as the original. Licence and author details were checked against Wikimedia Commons on 8 October 2026. If you are an author and would like a credit corrected, please get in touch.
Case 01
- A “Pneumothorax_CXR.jpg” by User:Clinical Cases, CC BY-SA 2.5, via Wikimedia Commons. Changes: resized and re-encoded (WebP/JPEG). Teaching arrows and labels are a separate overlay added by this site. Adapted image shared under the same licence.
Case 02
- A “Pleural_effusion_-_Left_lung_(7471755836).jpg” by Yale Rosen, CC BY-SA 2.0, via Wikimedia Commons. Changes: top banner cropped; resized and re-encoded (WebP/JPEG). Teaching arrows and labels are a separate overlay added by this site. Adapted image shared under the same licence.
Case 03
- A “X-ray_of_lobar_pneumonia.jpg” by Mikael Häggström, M.D., CC0, via Wikimedia Commons. Changes: resized and re-encoded (WebP/JPEG). Teaching arrows and labels are a separate overlay added by this site.
Case 04
- A “Pulmonary_oedema.jpg” by Frank Gaillard, CC BY-SA 3.0, via Wikimedia Commons. Changes: resized and re-encoded (WebP/JPEG). Teaching arrows and labels are a separate overlay added by this site. Adapted image shared under the same licence.
- B “Pulmonaryedema09.JPG” by James Heilman, MD, CC BY-SA 3.0, via Wikimedia Commons. Changes: resized and re-encoded (WebP/JPEG). Adapted image shared under the same licence.
Case 05
- A “Pneumoperitoneum_chest_X-ray.jpg” by Bill Rhodes, CC BY 2.0, via Wikimedia Commons. Changes: resized and re-encoded (WebP/JPEG). Teaching arrows and labels are a separate overlay added by this site.
- B “FreeairXray.png” by James Heilman, MD, CC BY-SA 3.0, via Wikimedia Commons. Changes: resized and re-encoded (WebP/JPEG). Adapted image shared under the same licence.
Case 06
- A “Upright_X-ray_demonstrating_small_bowel_obstruction.jpg” by James Heilman, MD, CC BY-SA 3.0, via Wikimedia Commons. Changes: cropped; resized and re-encoded (WebP/JPEG). Teaching arrows and labels are a separate overlay added by this site. Adapted image shared under the same licence.
Case 07
- A “Sigmavolvulus_Roentgen_Abdomen_pa.jpg” by Hellerhoff, CC BY-SA 3.0, via Wikimedia Commons. Changes: resized and re-encoded (WebP/JPEG). Teaching arrows and labels are a separate overlay added by this site. Adapted image shared under the same licence.
- B “Sigmavolvulus_-_Coffee-bean-sign_-_LSL.jpg” by Hellerhoff, CC BY-SA 3.0, via Wikimedia Commons. Changes: resized and re-encoded (WebP/JPEG). Adapted image shared under the same licence.
Case 08
- A “Double_wall_sign.jpg” by Scott1751, CC BY-SA 3.0, via Wikimedia Commons. Changes: resized and re-encoded (WebP/JPEG). Teaching arrows and labels are a separate overlay added by this site. Adapted image shared under the same licence.
- B “Pneumoperitoneum_lateral_decubitus.jpg” by Bill Rhodes, CC BY 2.0, via Wikimedia Commons. Changes: resized and re-encoded (WebP/JPEG). Teaching arrows and labels are a separate overlay added by this site.
Case 09
- A “AnterDisAP.png” by James Heilman, MD, CC BY-SA 4.0, via Wikimedia Commons. Changes: resized and re-encoded (WebP/JPEG). Teaching arrows and labels are a separate overlay added by this site. Adapted image shared under the same licence.
- B “AnterDis.png” by James Heilman, MD, CC BY-SA 4.0, via Wikimedia Commons. Changes: resized and re-encoded (WebP/JPEG). Adapted image shared under the same licence.
Case 10
- A “CoinAP.jpg” by James Heilman, MD, CC BY-SA 3.0, via Wikimedia Commons. Changes: resized and re-encoded (WebP/JPEG). Teaching arrows and labels are a separate overlay added by this site. Adapted image shared under the same licence.
- B “CoinL.jpg” by James Heilman, MD, CC BY-SA 3.0, via Wikimedia Commons. Changes: resized and re-encoded (WebP/JPEG). Teaching arrows and labels are a separate overlay added by this site. Adapted image shared under the same licence.