A five-week delay reviewing the scans of one terminally ill cancer patient has triggered checks for thousands more cases after failures at a major hospital.

In the second Queensland Health bungle revealed in two days, patients at Caboolture Hospital might have been exposed to serious health complications because of their medical images not being sent to specialists.

Metro North Health chief medical officer Elizabeth Rushbrook apologised for the failure, which she described as "the worst-case scenario for us".

"This is not OK," she told reporters on Tuesday.

Surgical, cardiac, respiratory and pediatric patients who underwent imaging processes at the hospital, north of Brisbane, during a more than two-year period were affected.

Among the 9000 patients affected between April 2023 and ear

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