(Lymphangioma; Lymphangioma Circumscriptum; Cystic Hygroma; Cavernous Lymphangioma)
Lymphatic vascular malformations are elevated lesions composed of dilated lymphatic vessels.
Most lymphatic malformations are present at birth or develop within the first 2 yr.
Lesions are usually yellowish tan but occasionally reddish or purple if small blood vessels are intermingled. Puncture of the lesion yields a colorless or blood-tinged fluid.
Diagnosis of lymphatic malformations is made clinically and by MRI.