King Charles, the Princess of Wales and more stepped out on Dec. 25 for the royals' traditional Christmas Day walk. See photos from the family's outing.

King Charles III used his annual Christmas message Wednesday to hail the selflessness of those who have cared for him and the Princess of Wales this year, after both were diagnosed with cancer. The 76-year-old monarch said he and his family are “continually” impressed by those who dedicate their lives to helping others.

Britain’s King Charles thanked medical workers who treated him and Princess Kate after their cancer diagnoses in his annual Christmas message on Dec. 25.

King Charles III has used his Christmas message to hail the efforts of healthcare workers and all those who support others, before praising the medical staff who provided “strength, care and comfort” during his and the Princess of Wales’ cancer treatments.

King Charles thanked the medics who cared for him and Princess Kate, after they both underwent treatment for cancer this year, in a Christmas message.

Charles offered his “heartfelt thanks” to medical staff who offered “strength, care and comfort” during cancer treatment

King Charles III was diagnosed with cancer this year after treating an enlarged prostate. His daughter-in-law, Kate Middleton, completed chemotherapy in September.