Police are appealing for help to find a 53-year-old man last seen at Antrim Area Hospital at the weekend.
Geoffrey Adams from Broughshane has been missing since the afternoon of Sunday February 8.
He is described as 5ft 9in, very thin, bald with a grey beard, crooked teeth and a crooked nose.
When last seen he was wearing a hospital gown and navy track bottoms.
Inspector Alexander Johnston said: "Police are concerned for Geoffrey's welfare and would ask him or anyone who knows of his current whereabouts to get in touch immediately on 101."
Police have not yet issued a photograph of Mr Adams.