A woman, killed during an incident involving a stallion in a field, had visited Darent Valley Hospital before her death.
The body of the 53-year-old was discovered in fields in Darenth Wood Road, Dartford, at 10am on Friday.
National media have speculated the Gravesend woman was mauled by the stallion after entering the fields that run alongside the hospital.
Police are not treating the death as suspicious and have handed information to the coroner to record the death.
A Darent Valley Hospital spokesman said: "We offer our sincere condolences to the family and friends of the lady who was killed in this tragic incident.
"She came into the Emergency Department at Darent Valley late on Thursday evening, was assessed and was admitted to our Clinical Decisions Unit. "Doctors advised her to stay in hospital. However, she took the decision to leave."
The spokesman said he could not reveal why she had visited in the first place.
A Kent Police spokesman refused to confirm speculation that she had been thrown from the horse but did say the animal had not been put down.
Don't miss out, subscribe today. Keep up to date with our newsletters.
A guide for your future. For year 11 students in Kent and Medway. Click here for the e-edition.
Education, Training & Childcare is a special supplement published by KM Media Group four times a year. Click here for latest e-edition.
Get the latest food and drink news, recipes from some of the nation's top chefs plus updates from Kent's vineyards and breweries.
Search in your local area to find your perfect partner in Kent, with FreshStart Dating! PLUS, register for free!.
Find out what's going on in the garden, with Kent expert Lucy Hewett's weekly update.
Buy pictures that you've seen in a KM newspaper, or send in a picture and we will place it on our photo sales website so that you can purchase a super, unique gift.