Introduction
This session provides a comprehensive overview of how breast radiology integrates within a multidisciplinary breast tumor board. It outlines the core functions and composition of tumor boards, operational requirements, the radiologist’s responsibilities across staging, treatment planning, and response assessment, and the practical benefits and challenges of this collaborative model. Real-world case examples, evolving reporting standards, and workflow considerations are included to guide effective participation and patient-centered decision-making.
Multidisciplinary Breast Tumor Boards: Purpose and Structure
Tumor boards are collaborative conferences where specialists and allied health professionals review individual cancer cases and formulate evidence-based, coordinated, and personalized care plans. While historically in-person, many programs now operate virtually without compromising quality.
Key Points
- Goal: deliver comprehensive, coordinated, patient-centered, evidence-based care for each case
- Format: structured case presentation, imaging and pathology review, interdisciplinary discussion, consensus recommendations
- Modality: sustained transition to virtual platforms has maintained quality and expanded participation
Core Functions of a Tumor Board
Core functions encompass case review, comprehensive treatment planning, longitudinal monitoring (especially during neoadjuvant therapy), and patient-centered consideration of psychosocial and comorbid needs.
Key Points
- Case review led by a surgical “captain,” with participant-specific inputs (radiology, pathology, medical and radiation oncology)
- Multimodal treatment planning: surgery, systemic therapy, radiation, imaging needs, supportive services
- Longitudinal monitoring for neoadjuvant chemotherapy/hormonal therapy with interval reassessment
- Patient-centered integration of psychosocial needs and comorbid cancer care (e.g., GYN oncology for synchronous ovarian cancer)
Composition and Roles of the Care Team
A core oncology team collaborates with specialized and supportive disciplines; trainees and research staff enhance the educational and research mission.
Key Points
- Core disciplines: breast surgery, medical oncology, radiology, pathology, radiation oncology
- Essential additions: genetic counselors (universal presence in breast boards), nurse navigators, social work, psychology/psychiatry, plastic surgery, physical therapy, dietetics, palliative care
- Trainees: students, residents, fellows; robust educational value
- Clinical trials: coordinators and regulatory staff align cases with protocols and define imaging/monitoring requirements
Meeting Operations, Documentation, and Accreditation
Regularly scheduled meetings, attendance tracking, and formal documentation are required for accreditation and quality assurance, with CME credits often available.
Key Points
- Cadence: weekly meetings (e.g., Mondays 7:30–9:00 AM); high-volume centers may meet more frequently
- Documentation: centralized case records with staging, recommendations, and treatment plans; outcomes tracking
- Accreditation: supports NCI Cancer Center requirements; attendance and minutes must be recorded
- CME: tumor board participation often offers CME credits
The Radiologist’s Role in Tumor Board
Breast radiologists are critical to accurate diagnosis, staging, surgical planning, and response assessment, ensuring imaging adequacy and alignment with clinical and pathologic data.
Key Points
- Imaging quality and completeness checks, including second-look review for internal and external studies
- Clinical staging support: lesion detection, characterization, and nodal assessment
- Surgical planning: precise localization (clock-face, distance to nipple/chest wall), lesion extent, and multifocality/multicentricity
- Treatment planning: identify additional targets requiring biopsy or de-escalate benign-appearing findings
- Response assessment: serial evaluation during neoadjuvant therapy, with recommendations for management changes in non-responders or progressors
Imaging Reporting Standards for Tumor Board Presentation
Consistent, actionable reporting enables precise surgical and oncologic planning; MRI reconstructions can efficiently convey global disease extent.
Key Points
- Laterality (right/left/bilateral) and lesion size; designate target lesion 1, target lesion 2 when multiple
- Location: prefer clock-face over quadrant, plus distances to nipple and chest wall
- Extent of disease: largest dimension and confluent extent
- Associated features: nipple–areolar complex, skin, and chest wall invasion
- MRI: incorporate maximum intensity projections (MIPs) to depict global enhancement patterns and anatomic relationships
Surgical, Medical, and Radiation Oncology Information Needs
Radiology reports should anticipate discipline-specific decisions and parameters that influence therapy.
Key Points
- Surgery: precise anatomic location, size, extent, proximity to nipple/chest wall/skin, and mapping of multifocal/multicentric disease
- Medical oncology: nodal burden and distribution; chest wall involvement; “magic number” of ≥3 abnormal nodes often influences systemic therapy decisions
- Radiation oncology: nodal levels (axillary I–III, internal mammary) to guide fields; data critical for APBI candidacy (lumpectomy cavity-to-skin/chest wall distances)
Radiologic Assessment of Extent of Disease
Defining multifocality, multicentricity, and contralateral disease is pivotal to selecting breast-conserving surgery versus mastectomy and tailoring radiotherapy.
Key Points
- Multifocal: ≥2 foci within a limited extent (≈≤4 cm) that may be amenable to breast conservation depending on distribution
- Multicentric: geographically separate foci (e.g., >5 cm apart or in different breast zones) typically favoring mastectomy
- Prevalence: up to ~50% have multifocal/multicentric disease; do not stop searching after the index cancer is identified
- Contralateral synchronous malignancy: present in ≈4%—systematic evaluation is essential
Nodal Disease Evaluation and Upcoming BI-RADS 6th Edition Elements
Standardized nodal assessment enhances staging accuracy and treatment planning; forthcoming BI-RADS updates will expand guidance.
Key Points
- Describe number of abnormal nodes (count up to at least 10 if extensive), cortical morphology, and distribution
- Map axillary levels relative to pectoralis minor (level I lateral, II posterior, III medial) and assess internal mammary nodes
- Use MRI (axial/coronal T2 and post-contrast) and consider ultrasound for internal mammary evaluation
- Include supraclavicular regions when visualized; nodal mapping informs both surgery and radiation fields
Imaging in Neoadjuvant Therapy Response Assessment
Serial imaging informs treatment efficacy and surgical planning; radiologic response correlates with outcomes.
Key Points
- Schedule: MRI at ~3 weeks, 3 months, 6 months, and per clinical trial protocols
- Response patterns: complete response (no residual enhancement), partial response (shrinkage), no response (stable disease), progression (new/enlarging lesions)
- Prognosis: lack of response is associated with worse disease-free survival; progression (~5%) warrants urgent therapeutic reassessment
- Nodal response: radiologic normalization may not exclude residual pathologic disease—surgical-pathologic correlation remains essential
Imaging-Guided Surgical Planning
Target localization and axillary strategies should be explicitly documented to support operative planning.
Key Points
- Preoperative localization: document device type and placement (e.g., wireless reflectors) and verify with post-localization imaging
- Targeted axillary dissection: localize biopsy-proven metastatic node plus sentinel node mapping; clarify if nodes coincide
- Provide operative maps: clock-face positions, distances, and relationships to prior cavities or implants
Benefits to Patients, Teams, and Institutions
Tumor boards improve communication, adherence to evidence-based recommendations, and outcomes, while enhancing patient trust.
Key Points
- Improved outcomes and coordination across disciplines
- Enhanced patient confidence when informed their case was reviewed by a multidisciplinary team
- Meets institutional accreditation standards and supports continuous quality improvement
- Provides consistent, high-yield educational environment for all participants
Operational Challenges and Resource Considerations
Large, complex meetings require robust logistics, consistent follow-up, and supportive infrastructure.
Key Points
- Scheduling and quorum: coordinating 50–60 attendees requires protected time and backup coverage
- Consistency: systematic note-taking and follow-up processes are necessary to close loops
- Infrastructure: digital pathology integration, imaging access, and EMR workflows mitigate friction
Time and Effort Burden on Radiologists
Preparation is time-intensive and often uncompensated, with potential implications for wellness and academic productivity.
Key Points
- Time investment: approximately three hours weekly for preparation and presentation
- Uncompensated effort: frequently performed on personal time; some divert academic time, rarely clinical time
- Risks: contributor to burnout and reduced scholarly output; data support advocacy for institutional support and resourcing
Tumor Board-Enabled Opportunities: Research, QA, Education, and IT
Beyond clinical care, tumor boards catalyze research engagement, quality initiatives, and technology improvements.
Key Points
- Clinical trials: routine review of open/paused/upcoming trials and case eligibility; protocol-driven imaging schedules
- Quality improvement: outcome tracking and process metrics satisfy accreditation requirements
- Education and CME: continuous learning from evolving standards and peer discussion
- IT advancements: digital pathology via PACS, EMR integration of tumor board notes, and supportive analytics
Virtual Tumor Boards: Participation and Quality
Transitioning to virtual platforms has maintained quality while improving accessibility and attendance.
Key Points
- Increased participation due to flexibility (e.g., early-morning sessions, remote attendance while traveling)
- No observed decline in decision quality; formal comparative studies would be valuable
- Sustains interinstitutional collaboration and reduces logistical barriers
Managing Disagreement and Maintaining Collegiality
Divergent interpretations and evolving evidence naturally produce debate; structured, respectful discourse leads to better decisions.
Key Points
- Disagreements arise from new data, limited evidence, and professional preferences
- Productive discussions are welcomed when collegiality is preserved
- Clear documentation of consensus and alternative pathways supports individualized care
Practical Workflows for Radiology Preparation
Efficient preparation focuses on targeted case retrieval, EMR synthesis, and concise, decision-oriented imaging review.
Key Points
- Major workload: assembling case lists, retrieving prior imaging, and aligning clinical, pathologic, and imaging data
- Streamline: standardized reporting templates, checklists for lesion and nodal descriptors, and prebuilt imaging “teaching files”
- Coordinate with pathology/oncology to ensure complementary content and avoid redundancy
Conclusion
Multidisciplinary breast tumor boards exemplify best-practice, patient-centered oncology, with breast radiology central to accurate staging, surgical planning, and response assessment. Effective boards rely on disciplined operations, standardized reporting, and technology-enabled workflows. While the benefits to patient outcomes, education, and institutional quality are clear, the significant, often uncompensated preparation burden—particularly for radiologists—requires recognition and support. Virtual formats have expanded participation without compromising quality, and the tumor board remains a cornerstone for coordinated care, continuous learning, and innovation.
