Mammogram second opinion: what BI-RADS 3, 4 and 5 mean and what to do next

Dra. Paulina Herrera · Breast Surgeon (Mastologist) and Gynecologist · Hospital Ángeles Valle Oriente, Monterrey, Mexico

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When a second opinion makes sense

You received a BI-RADS 3, 4 or 5 report and do not understand what it means; you were told to "wait six months" and are not comfortable; you have microcalcifications or dense breasts; or you want a breast specialist —not only a radiologist— to decide the next step.

The BI-RADS scale in plain words

BI-RADS 0: incomplete, more imaging is needed. 1: normal. 2: benign finding. 3: probably benign, control in 6 months (less than 2 % chance of cancer). 4: suspicious, biopsy recommended. 5: highly suggestive of cancer, biopsy. 6: cancer already confirmed. A BI-RADS 4 does not mean you have cancer; it means a biopsy is needed to know.

How the review works

I review your images —not only the report— together with your history, examine you, and decide whether you need additional views, ultrasound, a 6-month control or a biopsy. If a biopsy is needed it can be done in Monterrey within days.

Screening recommendations

Monthly self-exam from 18, annual clinical breast exam from 25, screening mammogram from 40 —earlier with a mother, sister or daughter with breast cancer— and ultrasound as a complement for dense breasts and younger women.

Frequently asked questions

Almost certainly not: the chance is below 2 %. The correct step is a repeat study in 6 months to confirm it does not change.

An image-guided needle biopsy. Most BI-RADS 4 findings turn out benign, but only the biopsy confirms it.

Yes. Send the images (DICOM or the CD from your imaging center) and the report by WhatsApp or email link; you receive an opinion and a plan before deciding to travel.
Note: this information is educational and does not replace a medical evaluation. Every case is assessed in consultation.

Location and contact

Private practice at Hospital Ángeles Valle Oriente, Monterrey metropolitan area, Mexico

Address

Hospital Ángeles Valle Oriente
Av. Frida Kahlo 180, Torre de Especialidades Médicas
Suite 1104
San Pedro Garza García, N.L., Mexico

Directions
Getting here

Monterrey (MTY) is about a 2-hour flight from Houston, Dallas and San Antonio, with direct flights from several U.S. hubs. The hospital is 30 minutes from the airport.