Step 1 of 14
Presentation & Emergency Triage
Airway / deep-neck-infection emergency + the pulsatile-mass no-biopsy rule, before any workup
Before the elective work-up, two things are excluded that change the order of everything. First, the airway and acute infection: a neck mass with stridor, dyspnoea, rapid enlargement, or signs of a deep neck-space infection (trismus, dysphagia, sepsis) is an emergency — secure the airway and treat the infection first, and make the tissue diagnosis later. Second, the pulsatile or vascular mass: a mass that is pulsatile, bruit-bearing, or laterally mobile-but-vertically-fixed at the carotid bifurcation may be a paraganglioma (carotid body tumour, glomus vagale), and an open or incisional biopsy must never be performed until a vascular lesion is excluded by imaging.
These two filters — emergency airway/infection, and the no-biopsy vascular warning — come first because acting on them out of order is what causes harm: instrumenting an obstructing mass, or needling a paraganglioma. Once both are cleared, the stable, non-pulsatile adult neck mass enters the structured diagnostic pathway that follows.
- Emergency — stridor, dyspnoea, rapid enlargement, deep neck infection → secure airway / treat sepsis first
- Pulsatile / bruit / carotid-splaying mass → image before any biopsy (paraganglioma)
- Never open- or incisional-biopsy a vascular mass or an undiagnosed metastatic node
- Once cleared → structured diagnostic pathway
★ High-yield pearls (chapter-wide)
- A persistent neck mass in an adult over 40 is metastatic squamous cell carcinoma until proven otherwise — risk-stratify and investigate rather than treat empirically and wait.
- Cervical level predicts the primary — level I/II points to oral cavity and oropharynx, III–IV to larynx/hypopharynx/thyroid, V to nasopharynx and skin, and a supraclavicular node points below the clavicle (lung, oesophagus, GI).
- Never open-biopsy a pulsatile or vascular neck mass — image first (duplex, MRI/MRA, angiography); a carotid body tumour or glomus mistaken for a node bleeds catastrophically.
- Ultrasound-guided fine-needle aspiration is the first-line tissue diagnosis — it outperforms blind FNAB, samples cystic and deep lesions better, and characterises thyroid and salivary disease in the same sitting.
- A cystic level II node in an adult is HPV-associated oropharyngeal carcinoma until proven otherwise — do not dismiss it as a branchial cyst; test the aspirate for p16/HPV.
- Open excisional biopsy of a metastatic squamous node before the primary is found compromises later neck dissection and worsens outcome — FNAB first, endoscopy and imaging next, open biopsy last.
- Metastatic squamous carcinoma with no visible primary is carcinoma of unknown primary — PET-CT, panendoscopy, ipsilateral tonsillectomy, and tongue-base mucosectomy find most occult oropharyngeal primaries.
- B symptoms, rubbery multi-level or generalised nodes, and hepatosplenomegaly suggest lymphoma — it needs flow cytometry and usually a whole excised node, not just an aspirate, for WHO classification.
- EBV (EBER/serology) and a level II or V node in a patient from an endemic region should trigger a nasopharyngeal-carcinoma search before anything else.
- Not every neck mass is a node — thyroid masses follow the TI-RADS / Bethesda / ATA pathway and salivary masses their own benign-versus-malignant workup, so localise the anatomy before assuming lymphadenopathy.
Evidence base
3 sources- HIGH
Pynnonen MA, Gillespie MB, Roman B · Otolaryngol Head Neck Surg · 2017Clinical practice guidelinePMID 28891406
The AAO-HNS guideline for the adult neck mass — risk stratification, the malignancy-until-proven-otherwise principle, FNAB, and the staged workup; the spine of this chapter.
- MOD
van den Berg R · Eur Radiol · 2005ReviewPMID 15809825
Imaging-led diagnosis and management of head-and-neck paragangliomas — the basis for imaging-first, no-biopsy handling of the pulsatile mass.
- MOD
Torrealba JI, Valdes F, Kramer AH · Ann Vasc Surg · 2016Cohort studyPMID 27179981
Long-term series on carotid body tumour management — supports imaging-based diagnosis and planned surgery (± embolisation).
Decision tree
The triage screen is the first gate. Classification routes the stable patient to one of the aetiology-keyed pathways below. Cross-cut cards capture the chapter's must-not-miss rules.