Approach to a neck lump in adults

Approach to a complaint

In an adult, a persistent neck lump is cancer until proven otherwise; it is assessed with a head and neck exam and fine-needle aspiration.

Updated Nov 5, 2026

See it in 3D: Neck lymph nodes · Thyroid gland · Sternocleidomastoid · Parotid gland

What it is

In children, most neck lumps are inflammatory or congenital. In adults, by contrast, a persistent lateral lump is often a lymph node with metastasis from a squamous cell carcinoma of the upper aerodigestive tract (mouth, pharynx, larynx), above all in smokers and drinkers, or from an HPV-related oropharyngeal cancer, which may present with a neck node alone. Other causes are lymphoma, thyroid, salivary glands, tuberculosis and congenital cysts. The rule: treat it as malignant until proven otherwise, give no antibiotic courses without follow-up, examine the whole aerodigestive tract and obtain tissue by fine-needle aspiration before any open biopsy.

Key questions in the history

How long has the lump been there? Is it growing? Is it painful?
Does the patient smoke or drink alcohol? For how long and how much?
Hoarseness, dysphagia, painful swallowing, earache, one-sided nasal blockage or nosebleeds?
Fever, night sweats or weight loss (lymphoma, tuberculosis)?
Recent throat, dental or skin infection; contact with cats or with tuberculosis?
Skin cancer of the face or scalp, or previous neck radiation?

Causes and classification

Inflammatory and infectious: reactive lymphadenitis, abscess, tuberculous lymphadenitis, HIV, cat-scratch disease.
Congenital: branchial cleft cyst (lateral) and thyroglossal duct cyst (midline); they can appear in adults.
Neoplastic: metastatic head and neck squamous cell carcinoma, lymphoma, thyroid cancer, salivary gland tumours and metastases from distant tumours.
Thyroid: nodule, goitre and thyroiditis.
Other: lipoma and vascular or neural tumours.

Step-by-step approach

Define site (midline, lateral, supraclavicular, parotid), size, consistency, mobility and tenderness.
Do a full head and neck exam: mouth, oropharynx, skin of the face and scalp, thyroid and salivary glands.
If there are clear signs of infection you may treat it, but arrange close review; if the lump persists, do not repeat antibiotics.
Refer for endoscopy of the nose, pharynx and larynx to look for the primary tumour.
First tissue test: fine-needle aspiration, ideally ultrasound-guided.
Imaging: ultrasound, CT or MRI of the neck (MRI shows soft tissue better); PET if the primary is not found.
Do not do an open node biopsy before seeking the primary; if aspiration suggests lymphoma, the whole node is needed.
In metastatic squamous cell carcinoma, HPV (p16) and Epstein-Barr virus are tested; they point to the primary.

Differential diagnosis of a neck lump in adults

Cause	Clues	First test
Reactive or infectious lymphadenitis	Tender, recent, nearby source of infection	Treat the source and review soon
Metastatic squamous cell carcinoma	Over 40 years, tobacco, alcohol or HPV; hard and painless	Aerodigestive tract endoscopy and fine-needle aspiration
Lymphoma	Several rubbery nodes, fever, sweats, weight loss	Aspiration, then the whole node for biopsy
Tuberculous lymphadenitis	Chronic lump, sometimes with a sinus; contact with tuberculosis	Aspiration with mycobacterial studies
Thyroid nodule	Midline or paramedian, rises on swallowing	TSH and thyroid ultrasound; aspiration as findings dictate
Branchial or thyroglossal cyst	Lateral (branchial) or midline, rises with the tongue (thyroglossal)	Ultrasound; in adults, rule out a cystic metastasis

Red flags

Lump that persists or grows despite treating a possible infection.
Hard consistency, or fixed to the skin or deep tissues.
Tobacco or alcohol use, or age over 40 years.
Hoarseness, dysphagia, painful swallowing, referred earache or one-sided nasal blockage.
Fever, night sweats and weight loss.
A supraclavicular lump.
Facial weakness with a parotid lump.

Next step / Initial management

First tests: full head and neck exam, ultrasound and fine-needle aspiration; CT or MRI of the neck as needed.
If infection is suspected: antibiotic with close review; a lump that does not go away is not treated again with antibiotics, it is investigated.
Do not do an open biopsy or node excision in primary care; the head and neck team decides after the primary has been sought.
Refer as a priority (within days) to ENT or head and neck surgery every persistent lump in an adult, above all with tobacco, alcohol or aerodigestive symptoms.
Urgent same-day referral if there is stridor, severe dysphagia or signs of a deep neck abscess.

Test yourself

Think of the answer, then tap the question to see it.

A 58-year-old smoker has had a hard, painless lateral neck lump for 6 weeks. What do you do?

Treat it as malignant until proven otherwise: head and neck exam, priority referral, endoscopy to find the primary and fine-needle aspiration. No blind antibiotics.

Why is an open biopsy not done first for a suspicious neck lump?

Because the primary must first be sought in the aerodigestive tract; open biopsy comes only afterwards (NCI). Fine-needle aspiration gives the diagnosis with less risk.

A supraclavicular node contains squamous cell carcinoma. Where else, besides the head and neck, do you look for the primary?

The lung, oesophagus and genitourinary tract, because lower neck nodes can receive metastases from those organs (NCI).

Which viruses are tested in a cervical metastasis of squamous cell carcinoma, and why?

HPV (p16) and Epstein-Barr virus: HPV points to the oropharynx and Epstein-Barr to the nasopharynx, and they change staging.

A midline neck lump rises when the tongue is stuck out. Likely diagnosis?

Thyroglossal duct cyst.

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Educational content; it does not replace a medical assessment and is not a clinical instruction. For a real case, follow current guidelines and specialist advice.

Sources: Metastatic Squamous Neck Cancer With Occult Primary Treatment (PDQ) – Health Professional Version (National Cancer Institute (NCI), 2025); HPV and Oropharyngeal Cancer (Centers for Disease Control and Prevention (CDC), 2024); Oral Cancer (National Institute of Dental and Craniofacial Research (NIDCR), NIH, 2024).

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