Hundreds of patients have been recalled after errors were found in scans and x-ray readings by three locum radiologists at seven hospitals.

It followed a review of their work, due to concerns raised by their colleagues.

The locums - who no longer work in Ireland - had been employed by the Health Service Executive (HSE) at Kerry General, Cavan Monaghan and Bantry General in Cork.

One case dates back to 2013, and the other two were carried out last year.

The concerns revolve around not just x-rays, but also other scans such as CT scans and MRIs.

In Bantry, it is believed some 4,400 scans and x-rays have been reviewed - and in Cavan Monaghan Hospital, almost 3,000 examinations are being re-examined.

One of the radiologists who worked in Bantry also went on to work at Our Lady of Lourdes in Drogheda, Connolly Hospital in Blanchardstown, Wexford General and Roscommon.

Health correspondent with the Irish Times, Paul Cullen, told Newstalk Breakfast there was a late diagnosis of cancer for one patient so far.