Cwm Taf Health Board criticised for Lilian Yates 'failures'
29 November 2012 Last updated at 08:06 GMT
The Public Service Ombudsman for Wales has criticised a health board for serious failings after a 62-year-old woman died after being sent home from the Royal Glamorgan Hospital, Llantrisant.
The death of Lilian Yates could have been prevented if doctors fully considered a test indicating a clot, the public services ombudsman found.
Cwm Taf Health Board has apologised.
Owain Clarke explained the findings to Felicity Evans.