SINGAPORE - Prime Minister Lee Hsien Loong said he's "all set" for his operation on Monday to remove his prostate gland.
"Thank you all for your concern, good wishes and encouraging words! I have already received so many emails, SMSs, and messages through friends and contacts wishing me well.
"I'm all set for my op tomorrow, and so are my surgeon and medical team," wrote Mr Lee on Facebook.
Mr Lee was diagnosed with prostate cancer in January and will be undergoing surgery on Monday.
In a Facebook post on Sunday evening, Mr Lee uploaded a photo of him in Singapore General Hospital after the prostate biopsy that detected the cancer.
According to the Prime Minister's Office, an MRI of the prostate showed suspicious lesions and the biopsy found that one of out 38 samples containted cancer cells.
Mr Lee is scheduled to undergo a robot-assisted keyhole prostatectomy. He is expected to make a full recovery.
Cabinet ministers, MPs and the public took to social media to wish Mr Lee a swift recovery.
Deputy Prime Minister Teo Chee Hean, who will be Acting Prime Minister while Mr Lee goes on medical leave for one week after his operation, wrote on Facebook that he hoped Mr Lee would have a "smooth operation and speedy recover".
"Rest well and recover fully before getting back to your hectic schedule," wrote Mr Teo.
Environment and Water Resources Minister Vivian Balakrishnan, Manpower Minister Tan Chuan-Jin and Minister in the Prime Minister's Office Lim Swee Say also posted on Facebook, wishing Mr Lee a quick recovery.
President Tony Tan Keng Yam also wrote on his Facebook: "PM Lee told me earlier this week of his impending surgery for prostate cancer. As the condition was detected early, the doctors expect him to make a full recovery after the operation.
"Mary and I wish PM Lee a sucessful surgery, a speedy and complete recovery, and the very best of health."
The People's Action Party (PAP) also asked well-wishers to tag their posts with #GetwellsoonPM.
"Despite knowing of his illness, PM Lee has kept up a punishing schedule locally and internationally, most recently in helping to cement relations with Germany and Spain," the PAP said on its Facebook page.
This is not Mr Lee's first encounter with cancer. He was diagnosed in 1992 with lymphoma, a cancer of the lymphatic system, which went into remission after chemotherapy. His current condition is not related to his previous case of lymphoma.
According to the Health Promotion Board, prostate cancer is the third most common cancer among Singaporean men. The risk of prostate cancer increases after 50 years old.
Mr Lee turned 63 years old on Feb 10.
Last November, Emeritus Senior Minister Goh Chok Tong underwent sucessful surgery for prostate cancer and was given a clean bill of health after the operation.