The information on this website is not intended for diagnosis or treatment. Please consult your physician for health concerns.

+90 850 321 50 00

Branchial Cleft Cyst

Congenital cervical cyst arising from incomplete obliteration of embryonic branchial cleft remnants, most commonly second branchial cleft, presenting as painless lateral neck mass anterior to the sternocleidomastoid in young adults, requiring complete surgical excision.

Written by: Saygı Hospital Health Guide Editorial Board
Published:

This content is for general information; please consult your physician for diagnosis and treatment.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our KBB (Kulak Burun Boğaz) department. Book Appointment →

What is Branchial Cleft Cyst?

Branchial cleft cysts are congenital cervical cysts derived from embryonic remnants of the branchial apparatus, which forms the structures of the head and neck during weeks 4-8 of gestation. Failure of complete obliteration of branchial clefts (external) and pouches (internal) results in cysts (no external opening), sinuses (one external opening), or fistulas (both external and internal openings).

The second branchial cleft accounts for 95% of branchial anomalies, with the cyst typically located along the anterior border of the upper third of the sternocleidomastoid muscle. The fistulous tract (when present) ascends between the internal and external carotid arteries, over the hypoglossal and glossopharyngeal nerves, and opens into the tonsillar fossa. First cleft anomalies (preauricular/parotid) are second most common; third and fourth cleft anomalies are rare and usually present in the lower neck or supraclavicular region with potential for thyroiditis.

Diagnosis is suggested by characteristic location and clinical history. Ultrasound shows a thin-walled anechoic cystic mass; CT/MRI defines deeper extension and any tract. Fine-needle aspiration may show cholesterol crystals, squamous cells, and lymphocytes; in adults over 40, suspicion for cystic metastasis from HPV-related oropharyngeal cancer requires careful evaluation including p16 immunohistochemistry. Treatment is complete surgical excision of the cyst and any associated tract via lateral neck approach; recurrence after complete excision is less than 5%, while incomplete excision has recurrence up to 25-50%. Active infection mandates antibiotics first with delayed elective surgery 6-8 weeks later.

Symptoms

Painless smooth cystic mass at anterior border of sternocleidomastoid
Slow growth over months to years
Sudden enlargement with upper respiratory infection
Recurrent infection with redness, warmth, tenderness
Pus drainage if fistula present (small skin opening with persistent discharge)
Dysphagia or pressure symptoms if very large
Asymptomatic finding on imaging or examination

Risk Factors

Congenital (incomplete embryonic branchial cleft obliteration)
Family history (rare branchio-oto-renal syndrome — BOR — autosomal dominant)
No specific environmental risk factors
Onset typically in late childhood or young adulthood (2nd-3rd decade)
Equal male and female incidence
Bilateral cases more common in BOR syndrome
Recurrent upper respiratory infections may bring cyst to clinical attention

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Persistent painless lateral neck mass
  • Recurrent infection or abscess at lateral neck
  • Persistent fistulous opening with discharge in the neck
  • Sudden enlargement of long-standing neck mass
  • Lateral neck mass in a child or young adult
  • New cervical mass in adult over 40 (rule out malignancy)
  • Family history of branchial anomalies or BOR syndrome with hearing loss

Treatment Methods

01
Complete surgical excision of cyst and any fistulous tract (definitive treatment)
02
Lateral neck approach with careful identification of cranial nerves (VII, X, XII)
03
Antibiotics for active infection (amoxicillin-clavulanate or clindamycin) with delayed surgery 6-8 weeks later
04
Avoid incision and drainage of acutely infected cyst (creates uncontrolled fistula)
05
Fine-needle aspiration to differentiate from cystic metastasis in adults over 40 (p16/HPV testing)
06
Imaging (ultrasound and MRI) to define tract and relationship to vessels and nerves
07
Postoperative follow-up to assess for recurrence (less than 5% with complete excision)

Which Department to Visit?

You can visit our KBB (Kulak Burun Boğaz) department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

Learn About KBB (Kulak Burun Boğaz) Department

Let us help you

You can make an appointment with our specialists or contact us for your concerns.

Book AppointmentContact Us

Related Health Topics

Other articles from the same department you may want to explore.

Anaemia

Dahiliye (İç Hastalıkları)

Anaemia is a low haemoglobin level that reduces oxygen delivery, causing fatigue, pallor, and shortness of breath. It is not a disease itself but a sign of many underlying conditions. Most cases are correctable with appropriate diagnosis and treatment.

Iron Deficiency Anaemia

Dahiliye (İç Hastalıkları)

Iron deficiency anaemia develops when dietary intake, absorption, or losses create an iron shortfall, most often affecting women and children. Identifying the underlying cause is the core of management, alongside iron replacement.

Vitamin B12 Deficiency

Dahiliye (İç Hastalıkları)

Vitamin B12 deficiency can cause megaloblastic anaemia, neurological symptoms, and cognitive impairment. Early treatment with intramuscular or oral B12 largely prevents irreversible complications.

Hypertension (High Blood Pressure) Management

Dahiliye (İç Hastalıkları)

Hypertension is often called the silent killer because it progresses symptom-free for years and can damage the heart, brain, kidneys, and eyes. Regular monitoring, lifestyle change, and evidence-based drug therapy dramatically reduce cardiovascular risk.

Chronic Kidney Disease

Dahiliye (İç Hastalıkları)

Chronic kidney disease is one of the most common complications of chronic conditions such as diabetes and hypertension, and can be silent in its early stages.

Hepatitis B (HBV)

Dahiliye (İç Hastalıkları)

Hepatitis B is a DNA virus infection causing acute and chronic hepatitis with risk of cirrhosis and hepatocellular carcinoma; diagnosis integrates HBsAg, HBeAg, anti-HBc, and HBV DNA with management based on disease phase using nucleos(t)ide analogues (entecavir, tenofovir) and universal infant vaccination.

Hepatitis C (HCV)

Dahiliye (İç Hastalıkları)

Hepatitis C is an RNA virus causing chronic hepatitis that may progress to cirrhosis and hepatocellular carcinoma; modern direct-acting antiviral (DAA) pangenotypic regimens (sofosbuvir/velpatasvir, glecaprevir/pibrentasvir) achieve sustained virologic response over 95% in 8–12 weeks with universal adult screening and cure for nearly all patients.

Fatty Liver Disease

Dahiliye (İç Hastalıkları)

Non-alcoholic fatty liver disease (NAFLD) is closely related to obesity and metabolic syndrome and is largely reversible with early treatment.

Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.