Pope Francis has been admitted to the hospital for tests and treatment for bronchitis, the latest in a series of health problems for the 88-year-old pontiff.

The 88-year-old pontiff, who has been battling health problems for years, has begun treatment in a Rome hospital.

Pope Francis was being treated in a hospital in Rome for bronchitis and to have medical examinations, the Vatican said Friday, the latest in a string of ailments that have raised concerns about the 88-year-old pontiff’s health.