The body was hidden behind a tube skylight “in a narrow tunnel, technically called the atrium, which provides light and air to adjoining rooms”, according to a statement by the local health authority, Asl, published on Ansa.
The corpse, thought to belong to Primo Zanoli, a 65-year-old patient who disappeared three years ago, was found after an investigation request by his family.
He had been a patient in the hospital's neurosurgery section.
The hospital said in a statement it could not confirm if the body belonged to the missing patient or not.
"We have to wait for the outcome of tests by the prosecutor," the hospital said.