Positive breast biopsy :
what to do next?

Receiving a positive breast biopsy result is a deeply stressful experience. Whether it follows a fine-needle aspiration, a core biopsy, or a vacuum-assisted biopsy, the moment of reading the result raises immediate questions: is this cancer? What happens now? Do I need surgery urgently? This article answers them, step by step.

For a full overview of surgical management, see our page on breast cancer surgery.

What does a positive biopsy result mean?

A positive result means the pathologist found abnormal cells in the sample. But "positive" does not mean the same thing depending on the type of lesion:

• Benign risk lesion — atypical ductal hyperplasia (ADH), atypical lobular hyperplasia (ALH), lobular carcinoma in situ (LCIS): not a cancer, but a lesion that increases risk and often requires surgical excision for complete analysis.
• Carcinoma in situ (DCIS) — cancer cells present but not invading surrounding tissue. Treatable with excellent outcomes.
• Invasive carcinoma — invasive ductal or lobular carcinoma: a cancer requiring surgery and often additional treatment.

First steps after the result

1. Consult a breast surgeon

The first step is to see a breast surgeon (senologist) — a specialist who will review your report, order any further investigations needed, and propose a treatment plan. This consultation should ideally take place within 7 to 10 days of the result. For most breast cancers, there is no absolute urgency, but you should not wait.

2. Gather all your documents

Before the consultation, bring:

• The histopathology report from the biopsy
• All imaging (mammogram, ultrasound, MRI if performed) — on CD or USB
• Associated radiology reports
• Your personal and family history of breast or gynaecological cancers

3. Don't delay — but don't panic

Stress is completely understandable. But for most breast cancers, a delay of a few weeks before surgery does not affect prognosis. Taking time to fully understand your options, complete investigations, and make an informed decision is time well spent.

Further investigations you may be asked to have

• Bilateral breast MRI — to determine the extent of the lesion and look for other foci in either breast
• CT scan (chest/abdomen/pelvis) — to look for distant metastases (mainly if invasive cancer)
• Bone scan or PET scan — depending on stage and risk factors
• Blood tests — full blood count, liver function, tumour markers

Not all of these are routine. A small DCIS, for example, does not require a full staging workup. Your surgeon will decide what is appropriate for your case.

Surgical options

Lumpectomy (breast-conserving surgery)

In the vast majority of cases, a lumpectomy — removal of the tumour with a safety margin — is sufficient. The breast is preserved. This is often followed by breast radiotherapy to reduce the risk of local recurrence. Oncoplastic techniques can extend excision margins while maintaining a good cosmetic result.

Mastectomy

Mastectomy — removal of the entire breast — is recommended in certain cases: large tumour relative to breast size, multifocal disease, contraindication to radiotherapy, or patient's personal choice after full information. It can be combined with immediate reconstruction.

Sentinel lymph node biopsy

For invasive cancers, the sentinel node technique allows the first draining axillary lymph node to be analysed. If it is clear, full axillary clearance is avoided in the vast majority of cases — significantly reducing the risk of arm lymphoedema.

The multidisciplinary team (MDT) meeting

Before any treatment decision, your case must be presented at a multidisciplinary team (MDT) meeting, bringing together surgeons, oncologists, radiotherapists, radiologists, and pathologists. In France, this is a legal requirement for all cancers. The final decision always belongs to you.

Can I get a second opinion?

Yes — and it is your right. Seeking a surgical second opinion is not a sign of distrust towards your doctor — it is a normal step, often encouraged, that any serious clinician will support.

Dr Zeitoun offers second opinion consultations on breast biopsy results, in person at his Paris 8th practice or by teleconsultation. He reviews your histopathology report, imaging, and medical records, and provides an independent opinion on the proposed surgical strategy. Bring your biopsy report, images on CD or USB, and any relevant documentation.