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Cancer of unknown primary: does treatment modality make a difference?
Ashley E Balaker1, Elliot Abemayor, David Elashoff
1Division of Head and Neck Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California 90095, USA. abalaker@mednet.ucla.edu
The Laryngoscope
|April 28, 2012
Summary
Clinical stage significantly impacts survival for head and neck cancer of unknown primary (CUP). Treatment modality, including surgery with radiation or chemoradiation alone, did not show a significant difference in 5-year survival outcomes for CUP patients.
Area of Science:
- Oncology
- Head and Neck Surgery
- Cancer Research
Background:
- Head and neck cancer of unknown primary (CUP) presents a unique clinical challenge.
- Understanding factors influencing survival outcomes in CUP is crucial for effective treatment strategies.
Purpose of the Study:
- To systematically review and analyze published data on treatment outcomes for head and neck CUP.
- To determine if different treatment modalities impact survival rates in CUP patients.
Main Methods:
- Meta-analysis of 18 studies including 1,726 patients with head and neck CUP.
- Literature search focused on articles reporting 5-year survival outcomes within the last 12 years.
- Analysis of survival based on clinical stage (N stage) and extracapsular extension (EC).
Main Results:
- Overall 5-year survival for head and neck CUP was 48.6%.
- Survival rates varied significantly by N stage (e.g., N1=60.8%, N3=26.3%).
- Patients with extracapsular extension (EC) had lower 5-year disease-specific survival (56.9%) compared to those without EC (81.5%).
Conclusions:
- Clinical stage at diagnosis is the most significant predictor of survival in head and neck CUP.
- No statistically significant difference in 5-year survival was observed between chemoradiation alone and surgery with postoperative radiation/chemoradiation.
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