Kate Middleton didn't wear her engagement ring that once belonged to Princess Diana at the Royal Marsden Hospital in London ...

Kate Middleton visited the Royal Marsden Hospital in London on Tuesday, Jan. 14, where she received chemotherapy treatment after her cancer diagnosis last year. See all the photos here ...

Kate Middleton has made an emotional visit to the Royal Marsden Hospital in London to personally thank staff who took care of ...

Angela Terry, a lung cancer patient, tells PEOPLE that Kate's "gentle eye contact" and " level of connection " left an ...

Princess Kate opened up about her experience with chemotherapy while speaking to patients at the hospital where she was ...

Kate Middleton made a surprise visit to the Royal Marsden Hospital where she received cancer treatment, following her ...

The princess made a surprise visit to the Royal Marsden Hospital in Chelsea, London, on Tuesday to meet medical teams and ...

Princess Kate Middleton opened up about the side effects of chemo when she visited the Royal Marsden Hospital in London, which is where she received treatment amid her own cancer battle. The Princess ...

Princess Catherine surprised cancer patients at the same hospital where she was treated last year for her type of cancer.

The Princess of Wales made a surprise return to the Royal Marsden Hospital to personally thank staff who looked after her ...