Abertawe Bro Morgannwg Health Board has been criticised for its care of a man with a bowel complaint who then died after surgery.
A report from the Public Services Ombudsman found that he was not properly informed about the risks of the surgery and the operation was a complex procedure at the limits of the surgeon's skill.
The ombudsman also found that the man's partner should have been informed about his deterioration sooner. The health board have been ordered to pay £5,000 in compensation.
More top news
Bafetimbi Gomis' fortune in front of goal might just have changed for the better, according to Swansea manager Garry Monk.
Supermarket worker denied raping a 24-year-old, claiming he was at home with his wife.
Officers from South Wales Police are among those searching for 16-year-old Becky Watts from Bristol, who disappeared eight days ago.