King Charles III of Great Britain has been diagnosed with cancer on Monday, and he has started his treatment in London. It was discovered during his recent treatment for an enlarged prostate.
Type of cancer is not revealed
The Palace has not revealed the type of cancer the King has or the location where he is receiving treatment. 
In a statement, it was conveyed: “No further details are being shared at this stage, except to confirm that His Majesty does not have prostate cancer.” Following the treatment, the Palace announced that the King would postpone his public engagements “to allow for a period of private recuperation”.
Who will succeed king Charles?
If the King becomes entirely incapable of fulfilling his constitutional duties, causing dysfunction within the state,
his powers can be revoked and transferred to a regent. According to the Regency Act of 1937, the individual next in line to the throne, namely Prince William, would assume this role.
The King’s eldest son, Prince William, holds the position of first-in-line to the British throne. He is succeeded by his three children: 10-year-old Prince George, followed by Princess Charlotte, aged 8, and Prince Louis, aged 5.
King Charles appeared positive
On Sunday, the king showed no indication of the diagnosis as he was photographed smiling and waving to onlookers while attending a church service with Camilla.
It was the first time he went out in public since he and his daughter-in-law Kate left the hospital in London last week after getting treatment there. 
Buckingham Palace said, “The King has decided to share his diagnosis to stop rumors and to help people around the world understand cancer better, especially those who are affected by it.”
