The husband of a 53-year-old woman who died from breast cancer in April has called for an independent investigation into her care.
Unpublished reports by the Health Service Executive say there were weaknesses in the care of Ann Moriarty, the mother of a 13-year-old boy, at Ennis General Hospital.
In June 2007, an X-ray was misread at Ennis and according to the HSE 'a radiologist failed to identify something highly suggestive of a metastatic lesion'.
In August, Ms Moriarty attended the hospital's accident and emergency department.
Another X-ray was performed and she was discharged from A&E with a prescription for an upset stomach.
Blood test results showing elevated tumour markers were filed in her notes.
Nursing staff were concerned at the decision to discharge her, an internal HSE report states.
In mid-August, her husband, Karl Henry, took her to Galway Clinic for a second opinion where cancer was found to have spread to a number of organs.
Ms Moriarty was originally diagnosed in 2005 with breast cancer.
After medical and surgical treatment for several years, she was declared free of the disease.
In April 2007, she attended St James's Hospital in Dublin for a check-up.
A mammogram taken at the time is now missing.
St James's Hospital in Dublin said today that it has apologised to Mr Henry.
A spokesman said that the report of the mammogram is on Ann Moriarty's record but the hospital is still making every effort to locate the mammogram.
The hospital has written to Mr Henry offering a meeting to discuss his concerns about the case.
The Health Information and Quality Authority said it has written to the HSE seeking a full briefing on the incident.