Neck masses (lumps) are common problems in babies and children. Some neck masses are present at birth (congenital). These result from abnormal formation that occurs in the early stages of a baby's development during pregnancy. Many neck masses appear with an upper respiratory infection, such as a cold or sinus infection. Some are not found until they become enlarged and painful from infection. A neck mass can affect other structures in the head and neck area. But most of these masses are not cancer (benign). Cancerous neck masses are rare in young babies and children. Sometimes a mass is diagnosed as Hodgkin or non-Hodgkin disease. These are both cancers of the lymphatic system.

Your child's doctor will think about many factors when diagnosing a neck mass. These include:

• The child's age.
• How long the mass has been there, and if there are other masses.
• Family history of masses.
• Any past or ongoing illnesses, ear infections, or animal bites.

An exam of neck masses may include:

• Carefully looking at and feeling the child's neck.
• Finding the exact location of the mass.
• Checking for movement of the neck and the mass itself.
• Looking for swelling, redness, warmth, tenderness, drainage, or fluid in the mass.

Your child may have other tests, such as blood work or a biopsy. These may be needed to completely diagnose the type of neck mass and see if other neck tissues and structures are affected. Treating neck masses depends on the type of mass and if there is infection. Often surgery is needed to remove the mass.