Mammogram Callback: Why It Happens and What Comes Next

Quick answer: getting called back after a screening mammogram is common and usually not cancer. According to the American Cancer Society, fewer than 1 in 10 women called back are found to have cancer. About 5% to 15% of screening mammograms lead to more testing, usually because the radiologist wants a closer look at an area, especially after a first mammogram or in dense breasts. The next step is usually a diagnostic mammogram and often an ultrasound, sometimes on the same day. Most women then go back to routine screening; some are asked to return in six months, and a few need a biopsy.

If you have just received this call, take a breath. A callback means «we want a better picture,» not «we found cancer.» Here is what happens and why.

Why women get called back

A screening mammogram takes standard pictures of each breast. If the radiologist sees something that is not clear on those pictures, they ask for more. Common reasons include:

It is your first mammogram, or there are no previous images to compare with
Dense breast tissue, which can hide or mimic findings
Overlapping tissue that looks like a mass on one view but may separate on others
A cyst or benign lump
Calcifications, small calcium deposits that are usually harmless but sometimes need a closer look
An asymmetry, where one breast looks different from the other
A technical issue, such as movement or an area not fully included in the picture

Callbacks are more common in women who have not gone through menopause. They are less common when previous mammograms are available for comparison, and with 3D mammography. See [link: 3D vs 2D Mammogram: Is It Worth the Extra Cost?] and [link: Dense Breasts on a Mammogram: What It Means].

What happens at the callback appointment

1. Diagnostic mammogram. It is done like a screening mammogram, but with more pictures focused on the area of concern. These may include spot compression, which presses on a small area to spread the tissue, and magnified views to look at calcifications in detail. A radiologist often reviews the images while you wait.

2. Breast ultrasound. Very common after a callback, especially to check whether a lump is a fluid-filled cyst, which is almost always benign, or a solid mass. It uses sound waves, no radiation, and a gel on the skin. See [link: Breast Ultrasound: When It’s Used and What It Shows].

3. Sometimes MRI. Less often, a breast MRI is used to clarify a finding. See [link: Breast MRI: Who Needs It and What to Expect].

Many centers give you the result the same day, sometimes from the radiologist in person.

From the scanner room: [TU EXPERIENCIA (o de una técnica de mamografía): cómo es la cita de rellamada, cuánto suele durar y qué se dice a la paciente para tranquilizarla.]

What the results mean: BI-RADS categories

Radiologists report breast imaging results with a standard system called BI-RADS. A screening mammogram that leads to a callback is usually reported as BI-RADS 0 (incomplete: more imaging needed). After the extra tests, you will get one of the final categories:

BI-RADS	Meaning	Usual next step
0	Incomplete; more imaging needed	Callback for diagnostic imaging
1	Negative; no cancer seen	Routine screening
2	Benign finding, such as a simple cyst	Routine screening
3	Probably benign; about a 2% chance of cancer	Follow-up imaging in about 6 months
4	Suspicious: 4A (2% to 10%), 4B (10% to 50%), 4C (50% to 95%) chance of cancer	Biopsy recommended
5	Highly suggestive of cancer (about 95%)	Biopsy strongly recommended
6	Cancer already confirmed by biopsy	Treatment planning

A BI-RADS category is not a diagnosis. Only a biopsy can confirm whether cancer is present.

If you need a biopsy

A biopsy removes small samples of tissue with a needle, usually guided by mammography, ultrasound or MRI, under local anesthetic. It is usually done as an outpatient procedure. Even if you need a biopsy, most results are not cancer.

How to cope with the waiting

Book the callback as soon as possible. Waiting is often the hardest part.
Bring someone with you if it helps.
Bring previous mammograms if they were done elsewhere.
Write down your questions, such as: What did you see? What is the BI-RADS category? What happens next, and when?
Talk to someone. The American Cancer Society’s helpline (1-800-227-2345) is available around the clock.

Will a callback cost me money?

Screening mammograms are generally covered without cost sharing, but diagnostic mammograms, ultrasounds and MRIs after a callback often involve out-of-pocket costs such as a deductible or copay. Some states have passed laws to reduce these costs. Ask your insurer and the facility before the appointment.

Tips from the technologist

[TU EXPERIENCIA: 2-3 consejos propios. Ideas: pedir la cita de rellamada en un centro que dé resultados en el día, llevar la carta de rellamada, no buscar imágenes en internet mientras esperas.]

Frequently asked questions

What are the chances of cancer after a mammogram callback?

Low. Fewer than 1 in 10 women called back are found to have cancer.

How long after a mammogram do they call you back?

Usually within a few days to a couple of weeks, depending on the facility.

Is a callback more likely on my first mammogram?

Yes. Without previous images to compare, the radiologist is more likely to ask for extra views.

What does BI-RADS 0 mean?

It means the screening is incomplete and more imaging is needed. It is not a diagnosis.

Should I skip my next mammogram if I was called back before?

No. Each mammogram becomes a comparison for the next one, which actually lowers the chance of future callbacks.

This article is for general information and does not replace advice from your doctor.