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Diagnostic evaluation of the neck
M W van den Brekel1, J A Castelijns, G B Snow
1Department of Otorhinolaryngology-Head and Neck Surgery, Free University Hospital, Amsterdam.
Otolaryngologic Clinics of North America
|August 1, 1998
Summary
Modern imaging, including CT, MR, and ultrasound-guided fine-needle aspiration cytology (US-FNAC), improves detection of neck node metastases. However, micrometastases may be missed, necessitating strict follow-up for clinically N0 necks.
Area of Science:
- Oncology
- Radiology
- Head and Neck Surgery
Background:
- Neck node metastases detection is crucial for cancer staging and treatment.
- Advances in imaging modalities have enhanced the prediction of occult and overt metastases.
Purpose of the Study:
- To evaluate the impact of modern imaging on the management of clinically N0 necks with suspected metastases.
- To assess the clinical significance of negative imaging findings in the context of potential micrometastases.
Main Methods:
- Review of current imaging techniques including CT scans, MR imaging, and ultrasound-guided fine-needle aspiration cytology (US-FNAC).
- Analysis of the accuracy of these modalities in detecting palpable and occult neck node metastases.
- Evaluation of the implications of imaging results on clinical decision-making.
Main Results:
- Modern imaging significantly improves the ability to predict the presence of occult metastases and assess resectability of large metastases.
- High accuracy of CT, MR imaging, and particularly US-FNAC allows for clinical consequences to be assigned to negative findings.
- Micrometer-sized metastases may evade detection by current imaging methods.
Conclusions:
- Despite advancements, not all occult metastases are detectable, especially micrometastases.
- Strict follow-up is recommended for clinically N0 necks with negative imaging findings.
- Ultrasound-guided fine-needle aspiration cytology (US-FNAC) should be utilized for observed neck nodes rather than elective treatment.