Is having a lymphangioma painful to the child?

Not usually: Lymphangiomas contain no nerves, and thus the size and stretch caused by one does not cause pain. However, a large one overlying a body part that is needed a lot (eg, the eye) can be really annoying. More than anything, they are a cosmetic issue, and if they are hindering daily function or causing great distress, they can be surgically removed.

Yes: Lymphangiomas, or more correctly, lymphatic malformations result from abnormal formation of the lymphatic system & are characterized by obstruction to lymph flow. If they become infected or enlarge in tight anatomic spaces (i.e., neck, extremities) they are painful.

Not necessarily: A lymphangioma is a malformation of the lymphatic system. It may be an obvious deformity of the head and neck area, axilla/chest, and or groin area. They can get infected, but if large look worse than they feel. They can be treated by surgical removal.