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Stage II glottic carcinoma: prognostic factors and management
The Laryngoscope
|June 1, 1983
Summary
Vocal cord mobility significantly impacts glottic cancer outcomes. Impaired mobility in Stage II squamous cell carcinoma indicates a poorer prognosis, suggesting reclassification and tailored treatment strategies for better survival rates.
Area of Science:
- Otolaryngology
- Oncology
- Radiation Oncology
Background:
- Squamous cell carcinoma of the glottic larynx is a significant clinical challenge.
- Accurate staging and prognostic factors are crucial for effective treatment planning.
Purpose of the Study:
- To evaluate prognostic factors, particularly vocal cord mobility, in T2N0M0 glottic squamous cell carcinoma.
- To assess the impact of treatment modality (radiation, surgery, or combination) on survival and recurrence.
- To propose a reclassification of Stage II glottic cancer based on vocal cord mobility.
Main Methods:
- Retrospective review of 336 patients treated between 1960-1977.
- Focus on 70 patients with T2N0M0 disease.
- Analysis of 5-year actuarial survival, recurrence, salvage rates, and prognostic factors.
Main Results:
- Impaired vocal cord mobility is a critical prognostic factor for Stage II glottic cancer.
- 5-year recurrence-free rates were 90% for mobile cords (Stage IIa) and 73% for impaired mobility (Stage IIb).
- Stage IIb outcomes with impaired mobility resembled those of T3N0 lesions.
Conclusions:
- Recommending reclassification of Stage II glottic squamous cell carcinoma into Stage IIa (mobile cords) and Stage IIb (impaired mobility).
- Radiation therapy is recommended for Stage IIa disease.
- Surgery is recommended for Stage IIb disease due to fewer recurrences and longer survival compared to irradiation.