The senior Black Labour MP looked on as a nurse displayed images of post-operation scars - all of women with white skin.
Dawn recalled: "I could feel the anxiety but I also felt quite emotional, because I thought, I'm not going to look like that. I've got darker coloured skin.
"After a while, after wrestling with that in my head, I just said, 'Do you have any black women's bodies that I can see, please?"
Dawn said it took "so long" until she was finally able to see women with a similar skin colour.
Now, as a patron for cancer support charity Black Women Rising, she hopes experiences like these will become a thing of the past.
There is little research into racial disparities in cancer experiences in the NHS.
However, a BWR survey of 100 women of colour found 74% who use a prosthetic breast or nipple were not offered one to match their skin tone, while 78% were not offered a suitable free wig option.
Studies show Black women are also more likely to be diagnosed with later stage and more aggressive forms of cancer, and are more likely to get breast cancer at a younger age.
Speaking of her diagnosis in 2021, Dawn, 55, told the Mirror: "I hadn't yet come to terms with it and I had to make some big decisions.
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Denne historien er fra January 08, 2025-utgaven av Daily Mirror UK.
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LUCING UP FOR ANGE
Under-fire Postecoglou in driving seat for Wembley glory after brilliant Bergvall rocks Slot’s high-fliers
MANUARY SALES
Need to cut wage bill at heart of decision to listen to offers for all first-team United stars
WEST HAM WAS NEVER THE WAY FOR LOPETEGUI
Bizarre choice for a club that wants to play with a certain style of football
SNACK OF THE NET
Sandwich-maker Tonks has a tasty throw and he aims to make a meal of struggling Spurs when they face minnows Tamworth on Sunday
YOUNG'S SON HAS SEAN FEELING OLD
SEAN DYCHE says he will feel all of his 53 years tonight if Ashley Young's teenage son is in Peterborough's squad at Goodison Park.
RYAN'S HALL IN FOR LEEDS
Star says Headingley return is not a swansong
Bargains boss bags £1 billion
Discount chain's founder rakes in bumper payout as its profits soar
BLAME,SET AND MATCH
McEnroe reckons Raducanu's mentality is causing more problems than her injuries
BHA ACTION PLAN
Saturday TV fixtures added to beat the freeze
BHA ACTION PLAN Saturday TV fixtures added to beat the freeze
ITV RACING viewers won't be frozen out on Saturday after the BHA yesterday added fixtures at Ffos Las and Chelmsford City to the weekend racing programme.