Apparently, it isn't the doctor's or hospital's responsibility to diagnose health issues

[DirkGently]

69. I once saw something similar. It was an infection.

The elderly wife of a relative was suffering from terminal cancer, but *while in the hospital* took a bizarre turn for the worse, becoming delirious and speaking nonsense. The hospital, oddly, offered no opinion on what was going on.

What eventually became clear was that she had contracted a separate, severe infection of some kind while in the hospital. Whether or not it was related somehow to the cancer, they never said. They never said anything. They treated her, and she recovered from the delirium, before eventually succumbing to her underlying illness.

It struck me that the hospital was avoiding the acknowledging that she nearly died of something likely unrelated to her illness, contracted while under the hospital's care.