A south London hospital has apologised to the family of a 22-year-old man who died following a routine operation.
A post-mortem examination revealed Kane Gorny, 22, of Tooting, died of dehydration at St George's Hospital, also in Tooting, on 29 May 2009.
The hospital said it was very sorry and had introduced procedures to make sure a similar death could not happen again.
In December the Met Police started an investigation into the circumstances surrounding his death.
A spokeswoman for St George's Hospital said: "We are extremely sorry about the death of Kane Gorny and understand the distress that this has caused to his family.
"A full investigation was carried out by the trust in 2009 and new procedures introduced to ensure that such a case cannot happen in future.
"We have written to the family to explain the actions that have been taken and to answer their concerns about Mr Gorny's care.
"The family has also been invited to meet with trust staff to discuss the case in detail."
A Met Police spokeswoman said: "The coroner requested the Metropolitan Police Service to investigate the circumstances of the death.
"The inquest was subsequently adjourned pending the outcome of the investigation.
"An incident room was opened at Belgravia. Anyone with any information that could assist police should call the incident room."