SINGAPORE - A day after undergoing surgery to remove his prostate gland, Prime Minister Lee Hsien Loong did some physiotherapy and had a video chat with ministers attending a Cabinet meeting.

President Tony Tan Keng Yam and Mrs Tan also visited him at the Singapore General Hospital, where he remains warded.

"PM and Madam Ho Ching shared with us more details about the surgery," Dr Tan said in a Facebook post on Tuesday.

"We're happy that the operation went well. PM was in good spirits and looking forward to being discharged," he added.

"We hope that he will have a good rest before resuming his normal duties."

Mr Lee was diagnosed with prostate cancer last month, and on Monday, his doctor said the surgery went smoothly, with Mr Lee expected to recover fully.

Mr Lee has been given one week of medical leave, and Deputy Prime Minister Teo Chee Hean is standing in for him.

Yesterday morning, his physiotherapist got him to walk up and down his ward, and Mr Lee snapped a photo from his room window.

He later uploaded the photo, which showed the Duke-NUS Medical School and the new Academia building, on Facebook.

In the afternoon, Mr Lee's ministerial colleagues "dropped in" on him for a few minutes via video-link to wish him a good recovery, before starting a Cabinet meeting.

DPM Teo said in a Facebook post: "Glad to see him looking well, and in good spirits."

Several younger ministers even took a "wefie" with Mr Lee, which Manpower Minister Tan Chuan-Jin then uploaded on Facebook.

"Best not to disturb him in hospital! He is in good spirits and op and checks went well! #GetWellSoonPM," Mr Tan wrote.

On Tuesday night, Emeritus Senior Minister Goh Chok Tong added to the chorus of well-wishers on his Facebook page.