The Queen Mother had colon cancer at the age of 66 and surgery
removed a tumour, her official biography reveals.
The Queen Mother cancelled her royal engagements at the beginning
The book, published on Friday, says she underwent the 90-minute operation in
December 1966 at the King Edward VII Hospital in central London.
Clarence House said at the time she had undergone abdominal surgery to
relieve a partial obstruction.
The biography discredits the long-held belief the Queen Mother was fitted
with a colostomy bag during the procedure.
Biographer William Shawcross interviewed Sir Richard Thompson, the Queen's
former physician, for the official version of the Queen Mother's life.
It says the Queen Mother spent more than two weeks in hospital and when
discharged cancelled all her official engagements for the first three months of
Some years later the Queen's physician at the time, Sir Richard Bayliss,
wrote to one of the Queen Mother's ladies in waiting, saying that the lie of the
"colostomy" operation should be countered.
The biographer added: "But the rumours that the operation had included a
"Many people who had to endure that operation themselves derived comfort from
the belief that even someone with as active a life as Queen Elizabeth could
manage so well after such a difficult procedure."
The Queen Mother successfully beat the disease, dying in her sleep in 2002
Charles and Diana
The biography also reveals the Queen Mother's "regret" at the Prince of
Wales's decision to speak publicly about his failed marriage.
Prince Charles admitted adultery on national television in 1994 as he spoke
to his biographer Jonathan Dimbleby.
During a series of interviews the Queen Mother made in the 1990s and later
used in her biography, she stated: "It's always a mistake to talk about your
A few years before the prince's confession, his estranged wife Diana,
Princess of Wales, had collaborated privately with Andrew Morton on his book
that exposed her life within the Royal Family.
The Queen Mother found this "deeply shocking" and felt that "the washing of
dirty linen in public was utterly abhorrent", according to William Shawcross.
Mr Shawcross also appears to suggest the Queen Mother favoured Charles during
the marriage break-up, stating: "She did not cast the princess aside at this
time but she gave her grandson as much emotional support as she could."
The biography also tells of the Queen Mother's love of popular television
comedies like Dad's Army, Fawlty Towers and Keeping Up Appearances.
Mr Shawcross said she increasingly turned to the shows as she got older and
games of cards or singsongs with friends became less frequent.