By Miriam Stoppard I have just watched the Princess of Wales’ announcement and, like most people, I was quite shocked. She looked pale, drawn and frankly unwell. So I feel it was doubly brave of her to speak out and try and give the public some idea of what’s been going on for the past months. I think she went as far as she could in the circumstances. Her doctors thought her symptoms were benign and operated accordingly. A bit of explanation here. When some operations are done and tissue is removed, as a matter of routine some is examined under a microscope to make sure all the cells are norma…