Kate Middleton says she is being treated for cancer in video announcement

Buckingham Palace issues plea for privacy as Princess Kate treated for cancer

04:41

Now Playing

Watch: Kate Middleton says she is being treated for cancer in video announcement

03:05

UP NEXT

3 clinic staffers could be behind Kate’s alleged medical data breach

02:40

Hospital staffers reportedly investigated for alleged breach of Princess Kate’s medical records

01:34

Clinic staffer allegedly tried to access Kate medical records: report

02:00

Kate Middleton spotted in new video: Will it calm speculation?

03:12

Kate Middleton skips St. Patrick’s Day celebration amid questions

05:24

Prince William briefly mentions Kate while honoring mom Diana

02:31

Silence and Secrets: Charles Spencer’s Very Private School

23:48

Prince William to appear in public as questions swirl over Kate

02:25

Questions and concern grow after Kate Middleton’s edited photo

03:11

Kensington Palace refuses to release original photo Kate edited

05:42

Brother of Princess Diana alleges physical and sexual abuse

03:02

Charles Spencer reveals he was sexually abused at age 11

08:19

Kate Middleton addresses family photo that sparked backlash

02:09

Photo agencies issue removal notice on photo of Kate, Princess of Wales

00:29

Charles Spencer opens up about abuse in NBC News exclusive

01:14

Kate Middleton seen in public for the first time in months

02:34

Princess of Wales seen in public for first time in months

01:25

Where is Kate? Princess of Wales’ public absence sparks concern online

04:02