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Updated: Jul 17, 2026
08:59
A Model for Perineural Invasion in Head and Neck Squamous Cell Carcinoma
Published on: January 5, 2017
Occult primary head and neck carcinoma.
Cecelia E Schmalbach1, Frank R Miller
1Department of Otolaryngology-Head Neck Surgery, University of Texas Health Science Center San Antonio, San Antonio, TX 78229, USA.
Current Oncology Reports
|February 10, 2007
Summary
Identifying the origin of unknown primary head and neck cancer is crucial. Diagnostic methods like panendoscopy and positron emission tomography aid in locating the occult tumor for targeted treatment.
Area of Science:
- Otolaryngology
- Oncology
- Head and Neck Surgery
Background:
- Unknown primary carcinoma in cervical lymph nodes constitutes ~5% of head and neck cancers.
- Most present as squamous cell carcinoma from Waldeyer's ring in middle-aged men.
- Identifying the primary tumor is vital for effective, site-specific therapy.
Purpose of the Study:
- To outline the diagnostic approach for unknown primary head and neck cancer.
- To emphasize the importance of identifying the occult primary tumor.
- To review current diagnostic modalities.
Main Methods:
- Comprehensive head and neck history and physical examination.
- Radiographic imaging and positron emission tomography (PET).
- Panendoscopy with biopsies and bilateral tonsillectomy.
Main Results:
- Over 90% of these cancers are squamous cell carcinomas originating in Waldeyer's ring.
- PET scans are effective in detecting occult primary tumors.
- Accurate diagnosis enables tailored treatment strategies.
Conclusions:
- A systematic diagnostic workup is essential for patients with metastatic cervical cancer of unknown primary origin.
- Early identification of the primary tumor site improves treatment outcomes.
- Multimodal imaging and endoscopic evaluation are key.
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