Called back after a mammogram: what happens next

This page is for anyone called back after a screening mammogram. It explains what the extra appointment involves, what the report terms mean, and how to get through the wait.

If a letter or a phone call has told you to come back after a screening mammogram, the most useful fact available is this one, in NCI's own words: although it can be scary to be called back for further testing, it is important to keep in mind that most people who are called back are not found to have breast cancer.

That is not a soothing platitude. It is a description of what typically happens.

Being called back and being diagnosed are two very different stages.

The usual next step is a diagnostic mammogram. NCI explains that diagnostic mammography requires images from more angles than screening mammography, which is exactly why it is used when an area needs closer examination.

Because more images are taken, the radiation dose is higher than for a screening mammogram. That is a straightforward trade: a bit more exposure in return for a much clearer answer.

Some people are also sent for a biopsy, where a small sample of tissue is taken so it can be examined.

Radiologists report findings using BI-RADS, the Breast Imaging Reporting and Database System. NCI describes it as providing a consistent way for radiologists to report a range of possible mammographic findings, with the recommended follow-up attached.

Three categories come up most often after a callback:

• Category 3, probably benign (likely not cancer). The recommendation is usually a six-month follow-up mammogram.
• Category 4, suspicious abnormality. This may require a biopsy.
• Category 5, highly suggestive of malignancy (cancer). This requires a biopsy.

Seeing a number on a report without an explanation is unnerving. Asking which category you were given, and what it means, is a completely reasonable question to put to the person who calls you.

NCI's breast cancer screening summary says younger women have higher false-positive rates than older women. It also says dense breast tissue lowers how well mammography finds cancer.

Neither of these means something is wrong with you. Ask your team why you were called back.

A callback is a request for better information, not a verdict.

The genuinely difficult bit of a false positive is not the extra scan. It is the days in between. NCI's screening summary lists anxiety from false-positive results with extra testing as a harm of screening.

A few things that tend to help:

• Ask for the earliest available appointment and say plainly that the wait is hard.
• Ask who will call you with the result and by when.
• Bring someone with you, if only so two people hear what is said.
• Try not to search online for what an image might mean. Only your radiologist can read your images.

If a probably benign result means waiting six months for a repeat scan, put the date in your calendar before you leave the building. That follow-up is the point of the plan, and it is easy to let slide once the fear fades.

You are allowed to find this stressful even when the outcome is fine. Most people do.

A few small preparations make the follow-up appointment easier.

Find out where your previous mammograms were done. Comparing new images with older ones helps a radiologist enormously, and if your earlier scans were taken elsewhere, they may need requesting in advance.

Ask, when you book, whether you will get results on the day or later. Knowing which kind of appointment you are attending helps you plan the rest of the day.

Write your questions down beforehand. Under stress, people forget what they meant to ask and then spend the evening wishing they had.

And if the imaging leads to a biopsy, ask what type it is and when the result will come. A biopsy is a way of getting a definite answer rather than a sign that the answer is bad. Waiting on a definite answer, unpleasant as it is, is better than living with a maybe.

Checked 2026-10-02: NCI, Mammograms fact sheet; NCI, Breast Cancer Screening (PDQ) for false-positive and anxiety wording.