A 51-year-old non-smoker has a 3 cm cystic level II neck mass. Fine-needle aspiration demonstrates p16-positive squamous carcinoma; flexible endoscopy is unrevealing. What is the best staging principle?
An adult cystic lateral neck mass can represent HPV-associated nodal metastasis. Treatment planning should follow complete staging and appropriately directed primary-site assessment rather than assuming a benign branchial cyst.
A. Excise the node immediately as a presumed branchial cyst: Unplanned open surgery can compromise later oncological management.
B. Use a specialist unknown-primary pathway with cross-sectional/PET staging and directed mucosal assessment: An adult cystic lateral neck mass can represent HPV-associated nodal metastasis. Treatment planning should follow complete staging and appropriately directed primary-site assessment rather than assuming a benign branchial cyst.
C. Prescribe antibiotics and repeat imaging in six weeks: Confirmed carcinoma needs staging, not empirical infection treatment.
D. Give neck radiotherapy without further assessment: Locating and characterising the primary can influence treatment fields and counselling.
E. Observe because p16 positivity indicates benign disease: p16 positivity supports an HPV-associated oncological pathway in this context.
If cytology were non-diagnostic rather than malignant, ultrasound-guided core/FNA strategy and multidisciplinary assessment would still be preferable to unplanned excision.
Draft Clinora educational material only; not official JCIE content, an accredited programme, or a substitute for local policy and specialist judgement.
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