Oct 22, 2025 · 2. Cysts Cysts are small, closed sacs that can form under the skin and feel like a lump on the back of the neck. They are usually filled with fluid, keratin (a skin protein), or …

Jul 23, 2024 · A lump on the neck is also called a neck mass. Neck lumps or masses can be large and visible, or they can be very small. Most neck lumps aren’t harmful. Most are also benign, or...

May 13, 2024 · Don't let a neck lump cause unnecessary worry. Learn about common causes, symptoms, and when to seek medical help. Find peace of mind with expert advice.

Mar 27, 2024 · Epidermoid (ep-ih-DUR-moid) cysts are harmless small bumps beneath the skin. They are most common on the face, neck and trunk. Epidermoid cysts are slow growing and …

Jan 6, 2025 · Neck masses and cysts can range from harmless growths to serious medical conditions. Knowing the potential causes and symptoms can help you identify when to seek …

Branchial cleft cysts are small, fluid-filled sacs that appear under your skin on one or both sides of your neck. You can usually see them somewhere between your jaw and collarbone.

Most neck lumps are not harmful. However, in some cases, these bumps and cysts can be a sign of a serious medical condition. Consult your doctor if you also have these symptoms.

This pictorial review presents the clinical and radiologic features of the cystic and cyst-like masses of the neck. For convenience, these have been classified into cystic masses, which are …

Oct 27, 2025 · A neck cyst is not a single diagnosis, but a group of conditions in which a cavity filled with fluid or jelly-like material forms in the soft tissues of the neck.

Neck Lump - Learn about the causes, symptoms, diagnosis & treatment from the MSD Manuals - Medical Consumer Version.