There are two types of lymphatic malformations and these are often combined.
Macrocystic malformations are large, soft, smooth clear masses under normal or bluish skin.
Microcystic malformations present as small, raised lesions containing clear fluid.
Superficial lesions may present as tiny clear bubbles that sometimes become dark red due to bleeding.
Both macrocystic and microcystic malformations may cause enlargement of any structure (illustration 5) (the lip, cheek, ear, tongue, limb, finger, toe).
Lymphatic malformations in the skin may present as tiny clear bubbles, called vesicles, which sometimes become dark red due to bleeding.
Lymphatic malformations confined to skin are referred to as lymphangioma circumscriptum.