About this condition
Branchial cleft anomalies are developmental cysts or tracts that may produce a lump on the side of the neck or a tiny skin opening with intermittent discharge. A clinician must distinguish them from other causes of neck swelling.
What matters most
An embryological tract may persist as a cyst, sinus or fistula. Such lesions can remain unnoticed until childhood or first appear more clearly during infection. Their location along the side of the neck offers clues but is not diagnostic.
Symptoms and reasons to seek care
A painless lateral neck swelling, recurring small amounts of mucus from a skin opening or episodes of tenderness can occur. With infection the lump may grow quickly, turn red and become painful, sometimes accompanied by fever.
How it differs from similar conditions
Enlarged lymph nodes, abscesses and other congenital neck lesions can look similar. A fistula is not simply a skin pimple; squeezing or probing the opening can worsen inflammation and is not a safe diagnostic test.
Assessment and diagnosis
The clinician examines the location, drainage, neck movement and signs of infection. Ultrasound is often useful, while selected children may require additional imaging and assessment by an ENT specialist or paediatric surgeon.
Monitoring and treatment
An acute infection is evaluated and treated first. For a confirmed persistent branchial cleft cyst or tract, a specialist may recommend planned excision to reduce recurrence. The decision and the provider of any operation must be confirmed separately; this page does not promise a particular service.
When emergency help is needed
Rapidly expanding neck swelling, difficulty breathing or swallowing, high fever, significant pain or a child who looks very unwell needs prompt emergency care. Do not attempt to drain the lesion; call 103 or 112 if breathing or general condition deteriorates.
Related information
Midline neck cyst in a child; Vascular malformations in children; Infantile haemangioma.
Signs and symptoms
A painless lateral neck swelling, recurring small amounts of mucus from a skin opening or episodes of tenderness can occur. With infection the lump may grow quickly, turn red and become painful, sometimes accompanied by fever.
Diagnosis and tests
The clinician examines the location, drainage, neck movement and signs of infection. Ultrasound is often useful, while selected children may require additional imaging and assessment by an ENT specialist or paediatric surgeon.
Care and treatment approaches
An acute infection is evaluated and treated first. For a confirmed persistent branchial cleft cyst or tract, a specialist may recommend planned excision to reduce recurrence. The decision and the provider of any operation must be confirmed separately; this page does not promise a particular service.
When to seek urgent care
Rapidly expanding neck swelling, difficulty breathing or swallowing, high fever, significant pain or a child who looks very unwell needs prompt emergency care. Do not attempt to drain the lesion; call 103 or 112 if breathing or general condition deteriorates.
Frequently asked questions
Can a small opening on the neck be congenital?
Yes. A branchial cleft sinus or fistula may have an opening that occasionally produces fluid.
Is every swelling at the side of the neck a branchial cyst?
No. Lymph nodes and infections are among several alternatives, and examination is required.
Why might surgery be considered?
Persistent congenital tracts or cysts may become infected repeatedly, so specialist removal may be discussed after evaluation.
Information sources
Medical source links used when preparing this article.
Important information
A medical consultation is needed for diagnosis and treatment recommendations.
Self-treatment can be harmful to your health.
