Neck Lump

Although alarming, a neck lump is usually a symptom of a mild condition. Nevertheless, serious pathologies should be ruled out as soon as possible.

Symptoms and causes

A neck lump refers to any swelling, nodule, or protrusion that appears in the anatomical region connecting the head to the body (on either side, in the anterior region, or at the nape). Although this is a common condition that is usually not serious, it is essential for a specialist to assess its nature in order to rule out serious conditions as early as possible.

Neck lumps can vary in size. Some are visible to the naked eye, while others are only detectable by palpation because they are so small that they go unnoticed.

The prognosis of a neck lump is generally favorable, as they are usually benign. However, the course of masses associated with an underlying disease depends on the severity of that condition.

Symptoms

The main symptom of a neck lump is the presence of an abnormal mass, which may be accompanied by other signs depending on its nature. The most common are:

Pain.
Fever.
General malaise.
Difficulty swallowing or breathing when the lump compresses the esophagus or trachea.
Hoarseness or voice changes when the mass affects the vocal cords.
In severe cases, unintentional weight loss.

Although it is recommended to consult a specialist when the lump persists for several days, regardless of associated symptoms, warning signs include:

Very large mass.
Hard lump.
Aphonia.
Difficulty swallowing.

A neck lump is considered at risk of being serious in the following cases:

It persists for a long time without changes despite treatment.
It measures more than 2 cm and continues to grow.
It exceeds 4 cm in size.
It is very hard and immobile.
It is painless.

Causes

The causes of a neck lump are highly diverse. The most notable include:

Muscle contracture: tension points in muscles as a result of sudden or improper movements, poor posture, or stress.
Inflammation of lymph nodes: these structures are part of the immune system, and their main function is to destroy foreign agents entering the body. Their swelling usually indicates an infectious process:

Near the lymph node:

Common cold.
Upper respiratory tract infection: tonsillitis, pharyngitis, sinusitis, laryngitis, otitis, influenza.
Parotitis or mumps: viral infection causing inflammation of the salivary glands.
Dental infection.

Within the lymph node:

Lymphadenitis: infection of the lymph nodes caused by a virus, bacterium, or fungus.
Toxoplasmosis: caused by the parasite Toxoplasma gondii and can be contracted through consumption of raw or undercooked meat, contact with cat feces, or during pregnancy.
Cat scratch disease: caused by the bacterium Bartonella henselae, present in cats’ claws and mouths.
Actinomycosis: infection caused by Actinomyces israelii, leading to abscesses and fistulas; it is rare.

Systemic (affecting the whole body):

Mononucleosis: commonly known as the "kissing disease," caused by the Epstein-Barr virus and transmitted through saliva.
Human immunodeficiency virus (HIV): viral infection that attacks white blood cells, weakening the immune system.
Tuberculosis: pulmonary infection caused by Mycobacterium tuberculosis, which may also affect other organs such as lymph nodes, bones, kidneys, or brain.

Thyroid disease: various conditions affecting the thyroid gland can cause enlargement, perceived as a neck lump.

Thyroiditis: inflammation of the thyroid gland.
Hypothyroidism: insufficient hormone production leading to a slowed metabolism.
Hyperthyroidism: excessive hormone production resulting in an accelerated metabolism.
Goiter: abnormal enlargement of the thyroid gland, either diffuse or nodular, usually due to iodine deficiency or thyroid dysfunction.

Benign tumors: non-cancerous abnormal cell growths.

Cysts: fluid- or cell-filled sacs formed in sebaceous glands or hair follicles. The most common is the sebaceous cyst, formed by the accumulation of epidermal cells beneath the skin.
Lipoma: accumulation of fat between muscle and skin; typically mobile and painless.
Salivary gland adenomas: develop in the parotid gland, oral cavity, or jaw.

Cancer: abnormal growth containing malignant cells; one of the less common causes of a neck lump.

Thyroid cancer: malignant tumor originating in the thyroid gland.
Lymphoma: cancer originating in the lymphatic system.
Metastasis: oral or throat cancer spreading to the neck.

Risk factors

A neck lump can occur in any individual, although the risk increases with the following factors:

Age: malignancy is more common after 50 years of age.
Family history.
Contact with patients with transmissible diseases that cause neck lumps.
Contact with cats.
Smoking: increases the likelihood of cancer.
Alcohol use disorder.

Complications

Neck lumps do not usually cause complications. When they occur, they are typically due to the severity of the underlying condition:

Rapid growth of the mass.
Dyspnea: difficulty breathing.
Dysphagia: difficulty swallowing.
Aphonia: complete loss of voice.
Excessive weight loss.

Which specialist treats a neck lump?

A neck lump is managed within the specialties of Family and community medicine, Pediatrics, Otorhinolaryngology, Endocrinology and Nutrition, Medical oncology, Radiation oncology, Oral and maxillofacial surgery, and General and digestive system surgery.

Diagnosis

The diagnosis of a neck lump and its underlying cause includes the following procedures:

Medical history: collection and analysis of information regarding medical and personal history, lifestyle, general health status, and symptoms reported by the patient.
Physical examination: visual inspection to determine whether the lump is visible and to assess its appearance and shape. Palpation is then performed to evaluate size, location, and consistency. The rest of the neck is also examined to identify other swollen areas.
Blood tests: provide information about the patient’s health status, including infectious processes, hormonal alterations, or tumor markers.
Intraoral examination: depending on the location of the lump, the oral cavity is examined to detect inflammation or masses in the posterior oral cavity, tongue, or tonsils.
Endoscopy: a flexible tube with a camera at its tip is inserted through a nostril and gently advanced to the larynx. The nasal cavity, throat, pharynx, and larynx are examined during the procedure. Although it may be uncomfortable, it is not painful and anesthesia is usually not required.
Neck ultrasound: ultrasound waves are used to obtain real-time images of neck structures. It is not painful, although mild discomfort may occur when the probe presses on certain areas.
Computed tomography (CT): if ultrasound does not provide sufficient detail, three-dimensional images are obtained using X-rays from different angles.
Biopsy: typically performed using fine-needle aspiration; the lump is punctured with a needle attached to a syringe to obtain a sample of its cells. The sample is then analyzed under a microscope to determine the presence of infection or tumor cells.

Treatment

Treatment of a neck lump depends on its underlying cause. Common approaches include:

Watchful waiting for viral infections: the immune system eliminates the virus. Relative rest, adequate hydration, and analgesics or antipyretics are recommended if pain or fever is present.
Specific medications:

Bacterial infections require antibiotics.
Hypothyroidism is treated with synthetic hormones to meet physiological needs.
Hyperthyroidism requires antithyroid drugs.
Radiotherapy: high-energy radiation is directed at the tumor to destroy malignant cells.
Chemotherapy: chemical agents are used before or after surgery to eliminate tumors.

Immunotherapy: enhances the patient’s immune system to improve its ability to fight cancer.
Surgery: typically performed before or after radiotherapy, chemotherapy, or immunotherapy to remove as many tumor cells as possible.