TV presenter Davina McCall revealed that she had breast cancer, almost a year after she had undergone a surgery to remove her brain tumor. In a video that she posted on her Instagram, she revealed that she was "very angry" when she found out the news, however, she is in a "much more positive place" after she has undergone another surgery three weeks ago to remove the tumor from her breast. How Did She Realize She Had Breast Cancer?She said that she found a lump a few weeks ago, however, it came and went back, so she continued to do her work. "I found a lump a few weeks ago. It came and went but then I was working on The Masked Singer and Lorraine, the TV show, and Lorraine Kelly had put signs on the backs of all the doors saying 'check your breasts' and every time I went for a wee, I did that," she said.She continued: "It was still there, and then one morning I saw myself in the mirror and thought 'I'm going to get that looked at'. I had a biopsy. I found out it was indeed breast cancer and I had it taken out in a lumpectomy nearly three weeks ago."McCall, who is now 58, says that the lump was "very, very small" and was discovered at an early stage. "I am so relieved to have had it removed and to know that it hasn't spread. My lymph nodes were clear, I didn't have any removed, and all I'm going to do now is have five days of radiotherapy in January as kind of an insurance policy," she said."It's been a lot. I was very angry when I found out, but I let go of that, and I feel in a much more positive place now. "I think my message is: get checked if you're worried. Check yourself regularly. If you are due a mammogram, then get it done," she said. Dense Breast And MammogramShe also revealed that it was only in August that she got her mammogram done, however, she has dense breasts, and so nothing was detected. "I have dense breasts and I had a mammogram in August, and I was postponing the ultrasound; I just couldn't find time to do it. Don't do that. Get the ultrasound." View this post on Instagram A post shared by Davina McCall (@davinamccall)]]>Difference Between Breast Ultrasound And A MammogramBreast Ultrasound: A breast ultrasound uses sound waves that reflect off the breast tissue to create detailed images of the breast. There is no radiation involved. Mammogram: A mammogram is an X-ray of the breast. A mammogram is an X-ray of the breast. A diagnostic mammogram focuses more closely on the area(s) of concern. We will get more X-ray views of the concerning area. We perform a diagnostic mammogram any time a patient comes in with symptoms of breast cancer or after an abnormal screening mammogram.As per the MD Anderson Cancer Center, normal breast tissue and cancerous tissue, both appear white on a mammogram, this is when an ultrasound can help us see small cancers that may be hiding amongst normal breast tissue. This is especially true for women with dense breasts, which means they have more glandular tissue and less fat in their breasts. However, the MD Anderson Cancer Center mentions that ultrasound is not recommended as a replacement for a mammogram. "Screening mammograms detect about 4 to 6 cases of breast cancer per 1,000 women. When a breast ultrasound is done on top of that, we detect about 2 to 3 more cases. So, breast ultrasound is a valuable screening tool we use in addition to a mammogram," it notes.