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Extracapsular spread in the clinically negative neck (N0): implications and outcome

A Alvi1, J T Johnson

  • 1Department of Otolaryngology, University of Pittsburgh School of Medicine, Pennsylvania, USA.

Otolaryngology--Head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery
|January 1, 1996
PubMed
Summary

Extracapsular spread in lymph nodes significantly worsens head and neck cancer outcomes, even in patients with clinically negative necks. Further research into alternative adjuvant therapies is recommended due to poor radiation therapy results.

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Area of Science:

  • Oncology
  • Head and Neck Surgery
  • Cancer Prognostics

Background:

  • Cervical metastasis is a key prognostic factor in head and neck cancer.
  • Extracapsular spread (ECS) in metastatic lymph nodes significantly reduces survival by 50% in patients with cervical metastatic disease.
  • While clinically negative necks (N0) generally indicate a good prognosis, some patients experience disease progression and mortality.

Purpose of the Study:

  • To investigate the prognostic significance of extracapsular spread in patients with clinically negative necks (N0) who exhibit poor outcomes.
  • To determine if ECS is a contributing factor to poor prognosis in the N0 subset of head and neck cancer patients.

Main Methods:

  • Retrospective analysis of 109 patients with clinically negative necks who underwent neck dissection.

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  • Evaluation of occult metastasis and the presence of extracapsular spread in lymph nodes.
  • Assessment of disease-free survival rates at 2 years post-treatment.

    • Main Results:

    • Occult metastasis was found in 34% of patients; ECS was present in 49% of these cases.
    • Patients with ECS had significantly lower disease-free survival (31%) compared to those with metastasis confined to the lymph node (47%).
    • Postoperative radiation therapy did not improve outcomes in patients with ECS.

    Conclusions:

    • Extracapsular spread is a significant predictor of poor outcomes in patients with subclinical cervical metastasis (N0 stage).
    • The findings suggest that current adjuvant therapies, specifically radiation, may be ineffective for patients with ECS.
    • Alternative adjuvant treatment strategies are warranted for head and neck cancer patients with extracapsular spread.