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

The Princess of Wales, 43, spoke to doctors and nurses the Royal Marsden Hospital in London as she personally thanked them for looking after her.

For her first official solo appearance in over a year, Princess Kate met with cancer patients and the team at London's Royal Marsden Hospital.

The Princess of Wales wanted to “show her gratitude to the incredible team, but also highlight the world leading care and ...

The Princess of Wales visited the Royal Marsden Hospital in London on Tuesday, Jan. 14 Kate Middleton has surprised cancer patients at the same hospital where she was treated last year. On Tuesday, ...

Middleton announced the happy news on her Instagram Tuesday alongside photos from her surprise hospital visit to the Royal ...

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

Kate, the Princess of Wales, made a poignant return Tuesday to the same hospital where she received treatment after being ...

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

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