The Director of Public Prosecutions has agreed to review the Crown Prosecution Service's decision not to prosecute in the case of a young boy who died of a treatable disease.
Ten-year-old Robbie Powell, from Ystradgynlais, died in April 1990 from Addison's Disease.
In the fortnight before he died, he was seen by five different doctors.
His father, Will Powell, has alleged that previous decisions taken by the CPS not to prosecute medics involved were flawed.
A letter to the family from the DPP has confirmed the case will be looked at again.