In certain cases, persistent one-sided ear pain without an obvious ear infection may be associated with a head and neck cancer.
This does not mean that ordinary ear pain is usually cancer.
Ear infections, dental problems, jaw disorders, and sinus conditions are much more common explanations.
However, unexplained ear pain that continues, especially when accompanied by a neck lump, difficulty swallowing, or persistent hoarseness, should be evaluated.
6. Understanding the Different Types of Cancer That Can Affect the Neck
The neck contains many important structures, including lymph nodes, the thyroid gland, salivary glands, muscles, blood vessels, nerves, and parts of the throat and airway.
Because of this, several different types of cancer can cause symptoms in the neck.
Understanding the differences can help explain why doctors may recommend different examinations and tests.
Thyroid Cancer
The thyroid is a small, butterfly-shaped gland located at the front of the neck, just below the Adam's apple.
It produces hormones that help regulate metabolism, body temperature, heart rate, and other important functions.
Thyroid cancer may begin when abnormal cells develop within the gland.
One of the most recognizable signs is a lump or nodule in the thyroid.
Other possible symptoms include:
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A swelling at the front of the neck.
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A lump that gradually becomes larger.
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Persistent hoarseness.
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Difficulty swallowing.
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A sensation of pressure in the neck.
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Enlarged lymph nodes nearby.
However, thyroid nodules are extremely common, and most are not cancerous.
Many are discovered accidentally during routine examinations or imaging tests.
Some thyroid cancers grow slowly and have very favorable treatment outcomes, while others are more aggressive.
The risk and treatment approach depend on the specific type of thyroid cancer, its size, and whether it has spread.
Lymphoma
Lymphoma is a type of cancer that begins in the lymphatic system.
The lymphatic system is part of the immune system and includes lymph nodes, lymphatic vessels, the spleen, and other tissues.
There are two major categories:
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Hodgkin lymphoma.
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Non-Hodgkin lymphoma.
Both types can affect lymph nodes in the neck.
A common symptom is an enlarged lymph node that may feel like a lump beneath the skin.
Unlike swollen lymph nodes caused by many infections, lymphoma-related nodes may remain enlarged without obvious signs of infection.
Other possible symptoms include:
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Unexplained fever.
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Night sweats that soak clothing or bedding.
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Unintentional weight loss.
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Persistent fatigue.
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Itching without an obvious skin condition.
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Enlarged lymph nodes in several areas of the body.
These symptoms are sometimes called B symptoms when referring to lymphoma, particularly unexplained fever, drenching night sweats, and significant unintended weight loss.
However, these symptoms can also occur with infections and other medical conditions.
A proper diagnosis requires medical evaluation and, in many cases, a lymph node biopsy.
Throat and Oropharyngeal Cancer
The throat includes several structures involved in breathing, speaking, and swallowing.
Cancers can develop in different areas, including the oropharynx, which includes the tonsils and the back of the tongue.
Some head and neck cancers are associated with tobacco and alcohol use.
Others are associated with human papillomavirus, or HPV.
Possible symptoms include:
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A persistent sore throat.
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Difficulty swallowing.
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A lump in the neck.
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Pain when swallowing.
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A sensation of something stuck in the throat.
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Persistent ear pain.
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Changes in speech or voice.
In some cases, an enlarged neck lymph node may be the first noticeable sign of an oropharyngeal cancer.
This can happen because cancer cells sometimes spread to nearby lymph nodes before the original tumor causes obvious symptoms.
Laryngeal Cancer
Laryngeal cancer develops in the larynx, commonly called the voice box.
The larynx is located in the neck and plays an important role in speaking, breathing, and protecting the airway during swallowing.
Persistent hoarseness is one of its most important warning signs.
Other possible symptoms include:
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A lasting sore throat.
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Pain when swallowing.
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A persistent cough.
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Difficulty breathing.
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A lump in the neck.
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Unexplained ear pain.
Smoking is a major risk factor, and heavy alcohol consumption can further increase the risk.
Early medical assessment is important because symptoms may initially resemble ordinary throat irritation.
Salivary Gland Cancer
Salivary glands produce saliva, which helps lubricate the mouth and begin the digestive process.
The largest salivary glands include the parotid glands, located near the ears, and the submandibular glands, located beneath the jaw.
Tumors can develop in these glands, although most salivary gland lumps are not cancerous.
Possible warning signs include:
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A lump near the ear or beneath the jaw.
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Persistent swelling on one side of the face or neck.
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Pain around the affected gland.
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Difficulty opening the mouth.
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Facial weakness or numbness.
A lump near a salivary gland should be examined, especially if it grows or causes changes in facial movement.
Skin Cancer on the Neck
The skin of the neck receives regular exposure to sunlight.
Over time, ultraviolet radiation can damage skin cells and increase the risk of skin cancer.
The main types include basal cell carcinoma, squamous cell carcinoma, and melanoma.
Watch for skin changes such as:
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A sore that does not heal.
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A growing or changing mole.
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A rough, scaly patch.
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A shiny or pearly bump.
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A lesion that repeatedly bleeds or forms a crust.
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A dark spot with irregular shape or color.
Skin cancer can occur on any part of the body, including areas that people may overlook.
If you notice a new or changing skin lesion on your neck, arrange an examination with a healthcare professional.
7. Why Do Some Neck Lumps Appear Without Being Cancer?
One of the most important things to understand is that most neck lumps are not caused by cancer.
The neck contains numerous lymph nodes that help the body fight infections.
When the immune system responds to an infection, these nodes may become enlarged.
This is called reactive lymph node enlargement.
It can happen during or after:
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A common cold.
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A sore throat.
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Tonsillitis.
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Dental infections.
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Ear infections.
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Skin infections.
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Certain viral illnesses.
In these situations, lymph nodes may feel tender or painful.
They often become smaller as the infection improves, although this can take several weeks.
Other noncancerous causes of neck lumps include:
Thyroid nodules: Small growths within the thyroid gland. Most are benign.