CNN Video: Using Twitter from the operating room for education
I am not sure that Twitter is the best teaching tool in the described setting but may be I am just being too conservative. In any case, I cannot imagine the patient's family being happy to see the real-time tweet "this is a huge tumor!" during cancer surgery.
See the tagged updates from the surgery on Twitter search.
Surgeons send 'tweets' from operating room. CNN.
Using Twitter to Teach: Surgeons 'Tweet' From Operating Room During Brain Surgery. ABC.
Why Doctors Are Tweeting During Surgery: Hospitals Embrace Social Networking Tool for Teaching. ABC News, 2009.