The first 60 days: Phyllodes tumour of the breast
A phyllodes tumour is a fast-growing, usually painless breast lump of gland and connective tissue that forms leaf-like fronds. Most are benign, some borderline and a few malignant, behaving like a sarcoma and spreading through the blood. Treatment is surgery with a rim of normal tissue; radiotherapy is considered for higher grades, and chemotherapy has little proven role. Below, week by week, is what OnCo's record of Phyllodes tumour of the breast says about the first two months: the order is typical, the timing is yours to ask about. Sections appear only where the record has something to say. Orientation, not medical advice.
What happens now
Staging tests establish exactly what and where the cancer is. Everything else follows from the answers.
Ultrasound and mammography, core needle biopsy, and excision of any rapidly growing or large fibroepithelial lesion because biopsy cannot reliably separate phyllodes tumour from fibroadenoma.
Ask which of these were tested and what the results were; see the report reader for what each value means.
These specialties appear in the standard of care for this cancer. In most centres they meet weekly as a tumour board to agree each plan; you can ask when yours was discussed and what was decided.
- PathologistNamed in the standard of care for: Diagnosis.
- RadiologistNamed in the standard of care for: Diagnosis.
- SurgeonNamed in the standard of care for: Diagnosis, Benign phyllodes tumour, Borderline and malignant phyllodes tumour.
- Medical oncologistNamed in the standard of care for: Borderline and malignant phyllodes tumour, Metastatic malignant phyllodes tumour.
- Clinical oncologist (radiotherapy)Named in the standard of care for: Borderline and malignant phyllodes tumour.
- Palliative and supportive care teamNamed in the standard of care for: Metastatic malignant phyllodes tumour.
A second opinion from a centre that treats many similar cases is normal, not rude; the standard of care tells you what to compare it against.
Each row is a setting from the standard of care, in the order it usually arises. Not all will apply to you; your stage and biomarkers decide which do. The guideline grade, where recorded, says how strong the evidence is.
Complete excision with clear margins; observation if margins are close after a benign diagnosis.
Wide excision aiming for clear margins or mastectomy for large tumours, no axillary staging, and adjuvant radiotherapy considered after breast conservation.
Treated as a soft-tissue sarcoma with doxorubicin-based chemotherapy; no proven benefit from adjuvant chemotherapy.
Generated from this cancer's standard of care, biomarkers and open problems. Take the group that matches where you are. To tick, add your own and print, open the one-page appointment sheet.
Newly diagnosed
- What is my exact diagnosis, stage, and grade, and which tests established them?Everything else follows from an accurate stage and subtype.
- Which biomarkers have been tested on my tumour (for example WHO grade from stromal cellularity, atypia, mitotic count, stromal overgrowth and border, Margin status after excision, Tumour size relative to the breast, MED12 mutationand TERT promoter mutation, No routine hormone receptor or HER2 testing), and what were the results?These results decide eligibility for targeted therapy, immunotherapy, and trials.
- Which subtype is my cancer, and does that change the recommended treatment?Recognised subtypes for this cancer include Benign phyllodes tumour, Borderline phyllodes tumour, Malignant phyllodes tumour.
- Is germline (inherited) genetic testing recommended for me or my family?Inherited variants can change treatment and matter for relatives.
Diagnosis
- For my situation (diagnosis), which of the standard options do you recommend and why?Guideline options include: Ultrasound and mammography, core needle biopsy, and excision of any rapidly growing or large fibroepithelial lesion because biopsy cannot reliably separate phyllodes tumour from fibroadenoma.
Benign phyllodes tumour
- For my situation (benign phyllodes tumour), which of the standard options do you recommend and why?Guideline options include: Complete excision with clear margins; observation if margins are close after a benign diagnosis.
Borderline and malignant phyllodes tumour
- For my situation (borderline and malignant phyllodes tumour), which of the standard options do you recommend and why?Guideline options include: Wide excision aiming for clear margins or mastectomy for large tumours, no axillary staging, and adjuvant radiotherapy considered after breast conservation.
Metastatic malignant phyllodes tumour
- For my situation (metastatic malignant phyllodes tumour), which of the standard options do you recommend and why?Guideline options include: Treated as a soft-tissue sarcoma with doxorubicin-based chemotherapy; no proven benefit from adjuvant chemotherapy.
- Am I a candidate for Doxorubicin, and what side effects should I expect?Knowing the expected toxicities helps you plan work, family, and supportive care.
Any stage
- Are there clinical trials I could join, for example of IMRT / IGRT (modern external beam)?Trials are how the next standard of care is set; asking early keeps options open.
- Would a second opinion at a high-volume centre change anything, and can you help arrange it?Rare or high-stakes decisions benefit from a centre that treats many similar patients.
- What supportive care (symptom control, nutrition, exercise, mental health, financial help) is available from the start?Supportive care improves quality of life and helps patients complete treatment.
- I read that “No randomised trial has tested margin width or radiotherapy”. How does that affect my plan?Open problems are where trials and second opinions matter most.
- I read that “Core biopsy cannot reliably distinguish phyllodes tumour from fibroadenoma”. How does that affect my plan?Open problems are where trials and second opinions matter most.
Much of what helps in the first weeks is free if you know to ask: testing, helplines, rides and lodging, second opinions, trial travel.
- Phyllodes tumour of the breast: the full pageA phyllodes tumour is a fast-growing, usually painless breast lump of gland and connective tissue that forms leaf-like fronds. Most are benign, some borderline and a few malignant, behaving like a sarcoma and spreading through the blood. Treatment is surgery with a rim of normal tissue; radiotherapy is considered for higher grades, and chemotherapy has little proven role.
- One-page appointment sheetYour questions, the words you may hear, what to bring, and space for the answers. Print it.
- Treatment sequencingWhich treatment tends to follow which, line by line.
- NavigatorStandard of care for your stage, what you have tried, and trials near you.
- Core needle biopsy and fine-needle aspiration (FNA): Taking a sliver of tissue (core) or a few cells (fine-needle aspiration) through a needle guided by ultrasound, CT or MRI, to diagnose the cancer and test its markers without surgery.
- Lumpectomy (breast-conserving surgery): Removing only the tumour with a rim of normal breast, keeping the breast; almost always followed by radiotherapy.
- Mastectomy: Removing the whole breast, either for cancer or preventively in BRCA1/2 carriers, where bilateral risk-reducing mastectomy cuts breast cancer risk by 90% or more.
Every term links to the glossary.