Japanese Prime Minister Fumio Kishida undergoes sinus surgery

Japanese Prime Minister Fumio Kishida, centre, arrives at hospital in Tokyo (Kyodo News via AP)

Japanese Prime Minister Fumio Kishida is having sinus surgery at a Tokyo hospital to treat chronic sinusitis that has caused him to have a stuffy nose since last year.

Mr Kishida, wearing a suit and escorted by security guards and aides, was seen entering the hospital on Saturday morning.