Kate Middleton were two words that covered headlines, magazines, news broadcasts and social media last week after she revealed she has cancer, but one commentator fears it echoes Princess Diana’s hardship. The Princess of Wales has dominated news over the past week, after the 42-year-old revealed she has been diagnosed with cancer on Friday. In a heartfelt and brave video, Kate Middleton said she has cancer following undergoing planned abdominal surgery in January – but now one expert worries the mania around her health resembles that of Princess Diana. Kate Middleton’s cancer announcement has…