Thailand's royal palace says King Bhumibol Adulyadej's kidneys are still not functioning properly, but infections plaguing the 88-year-old monarch have eased.

An announcement Wednesday night said the king is receiving continuous renal replacement therapy, a treatment for critically ill patients with acute kidney failure. It said Bhumibol is still producing insufficient urine.

The medical bulletin said an infection which the palace described last week as "severe" had decreased and there was less liquid in his lungs.

The king has been hospitalized for much of the past decade. Because Bhumibol has been king since 1946, there is great concern about the eventual succession by Crown Prince Vajiralongkorn.