Professor June Andrews, who led the review into standards of care for older people at the Princess of Wales Hospital and Neath Port Talbot Hospital, commissioned by the Welsh Government, admitted her remit was "quite narrow".
But, she warned: "I often have concerns about the care of older people in hospital everywhere - and I would be wondering whether there would be similar situations happening in other places."
A review into two hospitals in south Wales found poor care of older people but denied a "Mid Staffordshire" situation had occurred there.
The Health Minister says there will be new spot checks in hospitals, but no full inquiry - and that the situation is not another Mid Staffs.
First Minister Carwyn Jones takes questions on the Andrews Report.