[30F] Painless, mobile neck lump

What might be happening

Based on the information you've provided, possible causes for your lump could include:

• Lipoma: A lipoma is a slow-growing, fatty lump that's most often situated between your skin and the underlying muscle layer. A lipoma isn't cancer and is usually harmless. Treatment generally isn't necessary, but if the lipoma bothers you, is painful or is growing, you may want to have it removed.

• Cyst: A cyst is a closed pocket of tissue that can be filled with pus, fluid, skin cells, or other materials. They can appear anywhere on the body and can feel like a hard lump. They're usually harmless, but they can cause discomfort if they become infected or rupture.

• Lymphadenopathy: This is a condition in which lymph nodes become enlarged or swollen. This can occur as a result of infection, inflammation, or cancer. In your case, the lack of pain and the mobility of the lump make this less likely, but it's still a possibility.

• Other less common causes: These include various skin conditions, benign tumors, and, rarely, cancers.

What you can do

Given the nature of your symptoms, it would be best to consult a healthcare professional who can examine the lump and possibly order further tests. In the meantime, you can monitor the lump for any changes in size, shape, or color, and note any new symptoms.

What you should look out for

Please seek immediate medical attention if you notice any of the following:

• The lump grows rapidly or changes in size, shape, or color
• You develop new symptoms such as pain, redness, or discharge from the lump
• You experience unexplained weight loss, night sweats, or fever

Remember, while I strive to provide accurate information, I'm an AI and not a doctor. It's important to consult with a healthcare professional for a formal diagnosis and treatment.