Carla Bruni says she would have lost her left breast if not for a routine breast cancer screening four years ago.

The model and former first lady of France aimed to educate people about the importance of regular mammograms in an Instagram post shared Wednesday in partnership with the Paris Breast Cancer Center.

Surgery, radiotherapy, hormone therapy, I went through the usual treatment for this type of cancer, she wrote of her 2019 diagnosis. But I was lucky: my cancer was not yet aggressive.

Bruni credited her yearly mammogram with giving her the time to treat her cancer. Without detection, she said it could have resulted in surgery to remove her breast, known as a masectomy.

If hadnt done one every year, I wouldnt have a left breast today, she wrote.