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: gi

Liver nodules

47 yo F with liver masses on MRI, suspected mets from HNSCC

Bowel lesions

67 yo M fever, bowel obstruction


Colon polyp

47 y/o F with ascending colon polyp


Distal pancreas mass

25 yo F solid and cystic mass

Large stomach mass

80-year-old male with dyspeptic symptoms. Endoscopy shows a large elevated mass in 1/3 of the gastric fundus

Upper digestive bleeding

56-years-old male with upper digestive bleeding associated with a submucosal ulcerated lesion in the stomach


Small bowel mass

50 yo M with small bowel obstruction