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Google’s healthcare AI made up a body part — what happens when doctors don’t notice?

Hayden Field

created: Aug. 4, 2025, 2 p.m. | updated: Aug. 4, 2025, 6:50 p.m.

Now imagine your doctor is using an AI model to do the reading. Though not in a hospital setting, the “basilar ganglia” is a real error that was served up by Google’s healthcare AI model, Med-Gemini. Google calls the incident a simple misspelling of “basal ganglia.” Some medical professionals say it’s a dangerous error and an example of the limitations of healthcare AI. One of its examples was that Med-Gemini diagnosed an “old left basilar ganglia infarct.” But as established, there’s no such thing. It’s not clear exactly why none of them caught the error; Google did not directly answer a question about why it slipped through.

2 weeks ago: The Verge