The number of patients with a delayed or missed diagnosis due to the University Hospital Kerry scans issue has increased from seven to nine.

It has also been confirmed that four more patients need further investigation.

The hospital has said it cannot go into the details of individual cases.

It confirmed that 114 patients have now been recalled for repeat scans since the problem first arose.

At least three of the serious delayed diagnosis cases involve cancer.

So far, 77% of more than 46,000 scans have been reviewed, which amounts to 35,900 x-rays, ultrasound tests, or CAT scans.

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The recheck covers the period from March 2016 to July 2017 and covers patients from Kerry, north Cork and south Limerick.

Concerns emerged during the summer when three reportable events were notified regarding an employee and an initial audit of a sample of scans was conducted.

It was later confirmed that the employee was a locum consultant radiologist who no longer works at the hospital.

Minister for Health Simon Harris has indicated that he will decide shortly whether to initiate an independent review of the issue.