Pathology Playground: Crowd Unknowns

Below are pathology unknowns cases in which you can order immunostains and molecular studies. Choose your case, and when presented with a text box, begin typing the immuno or other study you'd like, and select it from the Autocomplete list. Enter your diagnosis to see if you're correct and see a presentation. If you want to upload your own cases, Login at the top right and go to the Dashboard. Watch a Youtube video on how to use the site and upload your own cases here.

tag: tumor

Nodule in the right psoas muscle

64-year-old female with chronic abdominal pain in the lower right quadrant. MRI showing a 2.8 x 2.8 cm irregular tissue thickening in close contact with the right psoas muscle at the L5-S1 level.