The Aneurin Bevan Health Board has apologised and paid £500 to the widow of a deaf patient who they treated as if he had dementia.
The woman, known as Mrs W, also said she and her husband were not told about a cancer diagnosis and was unhappy with how the Health Board communicated with her and her family.
Her 80 year old husband died at the Nevill Hall Hospital in Abergavenny in October 2011.
More top news
Plaid have been handed an election boost as influential Labour supporters urge people to pick the Welsh nationalists on regional ballots.
A record crowd of more than 66,000 is expected at the Principality Stadium today for the back-to-back Welsh derbies.
The Welsh Assembly election is less than a week away and the treatment and care of cancer is one of the more contested issues.