Lymphangioma, also known as lymphatic malformation, is a benign tumor that arises from the abnormal development of the lymphatic system. In the context of neonatology, it is significant because it can present at birth or develop shortly thereafter. These malformations are made up of fluid-filled sacs or cysts and can occur anywhere in the body, although they are most commonly found in the head, neck, and axillary regions.
