12 Things Every Woman Should Know Before Her First Mammogram

From their 40th birthday onward, women should have mammograms annually or every two years as part of routine health checks. Unless earlier screening is recommended because of factors such as inherited risk, mammography after this age detects breast cancer early and substantially improves the chances of successful treatment.

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3 types of mammography are available:

• Conventional mammography
• Digital mammography
• Tomosynthesis mammography

Most advanced cancer centers now offer digital mammography or tomosynthesis.

Situations Associated With High Breast Cancer Risk

Germline mutationsand a family history of breast cancer may be associated with a higher-than-usual risk of breast cancer . People with these increased risk factors should begin testing earlier.

• At What Age Should Mammography Begin, and How Often Should It Be Done?

What You Should Know Before a Mammogram

Whatever age you start mammography, there are some important points to know:

1. First, Find Out Which Technologies Are Available

Tomosynthesis, or 3D (three-dimensional) mammography, is becoming more common, and specialists say it produces fewer false positives. Tissue overlaps in two-dimensional images, potentially causing confusing results. Studies show that tomosynthesis can reduce errors by up to 30%. When booking, ask whether you can choose tomosynthesis.

2. Do Not Use Deodorant or Powder Before a Mammogram

Aluminum hydrochlorides in antiperspirants may resemble calcifications on a mammogram. These compounds, commonly found in deodorants, and products such as lotions and powders can appear as white spots resembling tumors. It is therefore best to avoid deodorant, powder, and lotion on the day of mammography. This is not a concern with ultrasound. However, this warning about the imaging procedure should not be interpreted as saying deodorants or creams cause breast cancer.

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3. A Total of 4 Images Are Taken—2 of Each Breast

The imaging center takes two images of each breast, horizontally and vertically. Oblique or mediolateral images are then taken. These four views are always obtained. More images may be needed if you have implants or larger-than-average breasts. Tomosynthesis also allows 3-dimensional assessment through multiple image slices.

One of the questions women most often ask about mammography is how much radiationthey receive. Even with multislice mammography such as tomosynthesis, the dose is equivalent to the natural radiation exposure during a 6-8-hour flight.

4. Diagnostic Mammography Differs From Screening Mammography

A diagnostic mammogram may supplement standard imaging such as ultrasound when a tumor is detected on another scan or a breast lump is felt. If mammography is performed to investigate a suspicious lump, more slices are obtained than in the standard 4-view mammogram.

During a diagnostic mammogram, the technician takes standard images and shows them to the radiologist, who will probably request additional images or ultrasound. If the doctor sees nothing concerning after reviewing the images, you may be asked to return in 3-6 months to check for changes. If the mass looks cancerous, a biopsy is requested.

Note: Mammography provides less information in young women and those with dense breasts. Additional imaging such as ultrasound or magnetic resonance imaging (MRI) may therefore be used.

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5. You May Feel Mild Breast Compression, but It Is Worth It

Among people undergoing mammography, 45% feel no pain, 40% feel very little pain, and the remaining 15% report pain. However, most of those experiencing pain say it passes within seconds and they feel normal again a minute later.

If you are worried about pain, you can schedule the test between days 14 and 21 after the first day of menstruation, when the breasts are least sensitive. Local anesthetic creams may also be used beforehand. Tomosynthesis machines cause less pressure and pain because less compression is required.

6. Understand Why Breast Tissue Is Compressed

Better breast images require less overlapping tissue. Even with methods such as tomosynthesis that take multiple slices, the breast must be flattened and the patient must remain still briefly. Understanding why compression is needed can help you feel more comfortable.

7. Know That You Can Speak Up

If the procedure hurts a lot, tell the technician, who may reposition you or help in another way to make you more comfortable.

8. It Is a Brief Procedure

Although compression may cause mild pressure, each of the four images takes only a few seconds. A standard screening mammogram generally takes approximately 15 minutes from start to finish. Each breast compression lasts less than a minute.

9. Results Take a Few Days

Your results become available within a few days. If you do not receive an email or phone call telling you they are ready, call the center.

10. You May Be Called Back for More Imaging After Your First Mammogram

Mammograms are normally compared with previous images to identify changes. With a first mammogram, there are no earlier images for comparison, so additional screening or images may be needed. This is also why having all mammograms at the same center matters. If you must attend another center, retain copies or take them to your new appointment so the radiologist has your full imaging history.

11. Do Not Panic if You Are Called Back

Only 2-4 out of 1000 screening mammograms lead to a cancer diagnosis, so even if you are recalled for further assessment, the likelihood of cancer is low.

12. It Is Okay to Feel Nervous

Feeling nervous about these medical procedures is normal. Asking yourself “Do I have cancer?” can cause similar anxiety whether it is your first or 20th mammogram. What matters is maintaining this awareness and having regular tests despite the possibility of risk. Even if your anxiety rises, these early detection and lifesaving procedures are worth it. 

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