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Parapharyngeal metastases from thyroid cancer
G Desuter1, M Lonneux, I Plouin-Gaudon
1Department of Otolaryngology-Head and Neck Surgery, Head and Neck Oncology Program, Université Catholique de Louvain, St Luc University Hospital, Brussels, Belgium.
Summary
Parapharyngeal metastasis from thyroid cancer is rare but a recognized lymphatic spread pattern. Surgical resection is an effective treatment with acceptable morbidity for these rare occurrences.
Area of Science:
- Oncology
- Head and Neck Surgery
Background:
- Thyroid cancer can spread through lymphatic pathways.
- Metastasis to the parapharyngeal space is an uncommon but documented event.
Purpose of the Study:
- To highlight the pattern of lymphatic dissemination in the parapharyngeal space originating from thyroid cancer.
- To emphasize the importance of recognizing parapharyngeal metastasis in thyroid cancer management.
Main Methods:
- Retrospective review of 696 thyroid cancer patients treated between 1986 and 2001.
- Identification of three patients with diagnosed parapharyngeal metastasis, all with a history of papillary thyroid carcinoma.
Main Results:
- Three patients presented with parapharyngeal metastasis from previously treated thyroid cancer.
- Surgical resection via a lateral cervical approach was performed in all cases.
- Two patients achieved regional control; one required additional resection for local recurrence 27 months post-surgery.
Conclusions:
- Parapharyngeal metastasis from thyroid carcinoma is a rare but significant pattern of lymphatic spread.
- Recognition of this pattern can help avoid unnecessary radioiodine treatment.
- Surgical resection is an effective therapeutic option with acceptable morbidity for parapharyngeal metastasis.