Exams
You are holding a mammogram order: in Chile, women aged 50 to 59 do not even need one to book
Few orders spawn so many versions of one name. Mammo, bilateral mammogram, digital mammography, screening mammogram, diagnostic mammogram. Each points at a different pathway inside the centre, even though the machine is the same.
Outside that band the order remains the way in, and who should have the exam and how often is decided by your treating team. This page covers the process; the indication belongs to your doctor.
What changes between a screening and a diagnostic mammogram?
The reason it was requested and, as a result, the length of the block. The RSNA reference on mammography describes screening as an early-detection tool and the diagnostic mammogram as the one used to evaluate a patient with abnormal clinical findings. The second usually needs extra views, and takes longer.
The FONASA fee schedule mirrors that with separate codes for bilateral mammography, unilateral mammography and a complementary axillary or other view. If your order says only mammogram, somebody at the desk has to decide which of the three it is.
How is it different from a breast ultrasound?
| Mammogram | Breast ultrasound | |
|---|---|---|
| Technology | X-rays | Sound waves |
| Breast compression | Yes | No |
| Role in Chile | Basis of screening under the national guideline | Complement, with dense breasts as the typical case |
| Who reports it | Radiologist, BIRADS terminology | Radiologist |
The AUGE preventive-medicine clinical guideline adds two requirements that explain why not every room will do: it recommends the images be taken by a specialised medical technologist and reported by a radiologist with specific training, using BIRADS terminology agreed nationally. If your order also asks for a breast ultrasound, that is two appointments.
What to bring and what to avoid on the day
- Your previous mammograms, especially any taken at another institution. RSNA asks for this explicitly so the radiologist can compare.
- No deodorant, talcum powder or lotion under the arms or on the breasts that day, per the same reference.
- Two-piece clothing, so you undress only from the waist up.
- If your breasts are usually tender, RSNA suggests avoiding the week before your period when scheduling a screening exam.
How long does it take?
RSNA describes an examination process of roughly 30 minutes. Report turnaround runs on a separate clock: ask about it when you book and note where the result is collected, because a share of completed mammograms end up with nobody picking up the result.
Why do so many mammogram orders get lost?
Through an unromantic mix: the order is written during a consultation about something else, it lives on a piece of paper, and remembering it competes with the rest of life. By the time the patient decides, the order has expired and the whole thing starts again. That loop fattens the waiting list without showing up in any indicator.
There is a factor specific to this exam: fear of the result. An automated appointment reminder that only repeats the date does not touch it. What moves the needle is somebody answering the patient's questions before the appointment.
There are centres doing that accompaniment today, in the institution's own voice. If yours has not written to you, ask whether they work with Surface.