D18.1: Lymphangioma, any site

Lymphangioma is a rare, non-malignant condition characterized by the proliferation of lymph vessels that form abnormal, benign clusters. This condition can unfold at any body site but most commonly affects the neck and head region in children, and is usually noticeable at birth or in early childhood. It's usually caused by a developmental error in the formation of the lymphatic system. A lymphangioma might present as a soft, typically painless swelling that can vary in size. Color might be normal, or there might be a slight blue discoloration in the overlying skin. Major complications of lymphangioma are greatly dependent on its location and can include obstruction or compression of vital structures. Although infrequent, it may also bleed or become infected. Lymphangioma doesn't disappear on its own and might need medical intervention, often in the form of surgery or medication. Despite the possibility of local complications, the prognosis is generally good.