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Contralateral cervical lymph node metastases in pyriform sinus carcinoma.
Paolo Aluffi1, Paolo Pisani, Mario Policarpo
1Department of Otorhinolaryngology, University of Piemonte Orientale, Novara, Italy. orl@maggioreosp.novara.it
Summary
Contralateral neck metastases occur in over 20% of pyriform sinus squamous cell carcinoma cases. Elective bilateral neck dissection is recommended for locally advanced disease to address occult metastases.
Area of Science:
- Otolaryngology
- Head and Neck Surgery
- Oncology
Background:
- Squamous cell carcinoma of the pyriform sinus is a complex malignancy.
- Understanding the patterns of metastasis is crucial for effective treatment planning.
Purpose of the Study:
- To determine the incidence of contralateral neck metastases in unilateral squamous cell carcinoma of the pyriform sinus.
- To identify factors associated with contralateral spread.
Main Methods:
- Retrospective review of 63 patients with unilateral pyriform sinus squamous cell carcinoma who underwent bilateral neck dissection.
- Multivariate statistical analysis of clinical and histological parameters.
Main Results:
- Contralateral neck metastases were found in 20.6% (13/63) of patients.
- Occult metastases accounted for 77% (10/13) of contralateral cases.
- Poorly differentiated tumors and lateral wall involvement correlated with pN2c stage.
Conclusions:
- Elective bilateral neck dissection is advised for patients with locally advanced pyriform sinus squamous cell carcinoma.
- This approach helps manage the significant risk of occult contralateral metastases.