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CLOZE Encounters: When LLMs Start Editing Medical Ontologies

Hospitals already have the raw material for better medical knowledge systems. It is sitting inside discharge summaries, nursing notes, radiology reports, ECG interpretations, and all the other clinical prose that makes electronic health records look deceptively “digital” while still behaving like a very expensive filing cabinet. The awkward part is that clinical notes are both valuable and dangerous. Valuable, because they contain granular observations that structured fields often miss. Dangerous, because they contain protected health information, idiosyncratic phrasing, and enough local context to make naïve automation look clever right up to the moment it quietly corrupts a downstream system. ...

November 23, 2025 · 16 min · Zelina