Neck cysts and fistulas are uncommon but important causes of swelling or lumps in the neck. While most neck swellings are due to enlarged lymph nodes, cysts and fistulas are typically congenital, meaning they are remnants from fetal development. These structures can remain unnoticed for years and may only become apparent in adulthood or if they become infected.
Causes
A cyst is a fluid-filled sac, while a fistula is an abnormal channel that may connect a cyst to the skin surface. Both are usually congenital and result from incomplete closure of embryonic structures during fetal development. In some cases, a fistula may open to the skin, allowing fluid to drain.
Symptoms
The most common symptom is a soft lump or swelling in the neck. Other possible symptoms include:
- Tenderness or swelling around the lump, especially if it becomes infected.
- Red or pink skin over the lump (on lighter skin; color changes may be less visible on darker skin).
- Discharge of fluid from the lump, which may have an unpleasant odor.
- In some cases, the area may become painful or the swelling may increase rapidly if infection occurs.
When to Seek Medical Attention
Contact a healthcare provider if you notice a lump, swelling, or discharge in your neck. Prompt evaluation is important, especially if the area becomes painful, red, or swollen, or if you develop a fever.
Diagnosis
A healthcare provider will begin with a physical examination of the neck. If further evaluation is needed, you may be referred to an ear, nose, and throat (ENT) specialist. Additional diagnostic tests may include:
- Ultrasound: To assess the size and nature of the cyst or fistula.
- CT or MRI scans: For detailed imaging, especially if surgery is planned.
Treatment
Surgical removal is the standard treatment for neck cysts and fistulas, especially if they become infected or cause recurrent symptoms. Key points about treatment include:
- Preoperative Care: Pain relief with acetaminophen (paracetamol) is recommended before surgery. Avoid anti-inflammatory medications (NSAIDs) in the week leading up to surgery.
- Surgery: The procedure is performed under general anesthesia. The surgeon makes an incision in the neck to remove the cyst or fistula. If a fistula is present, multiple incisions may be needed, and sometimes a tonsil may need to be removed if it obstructs the surgical field.
- Postoperative Care: Most patients stay in the hospital for a few days. Pain and discomfort are common in the first days after surgery and are managed with pain medication. Eating soft foods, such as porridge, omelets, or smooth soups, is recommended during recovery.
- Recovery: Sick leave of one to two weeks is typical, depending on the nature of your work.
Complications and Side Effects
Complications after surgery are rare but can include:
- Infection or bleeding at the surgical site.
- Nerve injury, which may result in reduced tongue movement, facial weakness, or limited shoulder movement.
- Persistent or worsening pain, redness, or discharge from the surgical site.
- Fever after surgery.
If you experience any of these symptoms after surgery, contact your healthcare provider promptly.
Takeaway
Neck cysts and fistulas are usually benign but can cause discomfort, infection, or cosmetic concerns. Surgical removal is effective and complications are uncommon. Early evaluation and treatment can prevent recurrent infections and other issues.