Clinical Scorecard: Current Approaches to the Management of Phyllodes Tumours in the Breast: Guidelines from the UK Association of Breast Surgery
At a Glance
Category
Detail
Condition
Phyllodes tumours (PT) of the breast, rare biphasic tumours with stromal and epithelial components
Key Mechanisms
Classification into benign, borderline, and malignant groups based on stromal cellularity and behaviour
Target Population
Predominantly women in their 40s and 50s presenting with breast lumps or enlarging fibroadenomas
Care Setting
Multidisciplinary breast clinics and specialist sarcoma centres
Key Highlights
Phyllodes tumours account for approximately 0.5% of all breast tumours with an incidence of 2 per 1,000,000 women in England.
Classification into benign (50–70%), borderline (12–26%), and malignant (20–30%) groups guides management and prognosis.
Specialist sarcoma centres improve preoperative biopsy rates and reduce multiple operations compared to non-specialist centres.
Guideline-Based Recommendations
Diagnosis
Patients presenting with breast lumps should undergo standard triple assessment following established protocols.
Consider excision or repeat biopsy for fibroadenomas showing >15% volume increase per month or lesions >4 cm with lobulated/multinodular imaging features.
Raise clinical suspicion if there is a history of previous benign breast lump excision at the same site or prior PT excision.
Management
Management should be guided by tumour classification (benign, borderline, malignant) to avoid overtreatment, especially of benign lesions.
Referral to specialist sarcoma centres is recommended for optimal preoperative biopsy and surgical planning.
Multidisciplinary team involvement is essential for streamlined clinical care.
Monitoring & Follow-up
Patients require follow-up for recurrence risk stratified by tumour classification.
Surveillance protocols should be tailored based on histological grade and surgical margins.
Risks
Risk of overtreatment of benign lesions especially in non-specialist centres.
Potential for recurrence and progression particularly in borderline and malignant PT.
Genetic predisposition associations (e.g., Li–Fraumeni syndrome) should be considered though not well established.
Patient & Prescribing Data
Women diagnosed with phyllodes tumours across benign, borderline, and malignant categories
Surgical excision remains the mainstay; adjuvant therapies and follow-up tailored by tumour grade and specialist MDT input
Clinical Best Practices
Use triple assessment for initial evaluation of breast lumps suspicious for PT.
Refer patients to specialist sarcoma centres for biopsy and surgical management to reduce reoperations.
Apply multidisciplinary consensus guidelines to standardize care and avoid overtreatment.
Monitor patients postoperatively according to tumour classification and margin status.
Incorporate patient advocate input and provide clear patient information materials.
by Mai K Bishr, Alex Humphreys, Mahbubl Ahmed, Karina Cox, Adam Hughes, Jen Isherwood, Sarah E Pinder, Dionysios D Remoundos, Elinor Sawyer, Muhammad S Tamimy, Lisa Whisker
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