Cystic hygroma is indistinguishable from cavernous lymphangiomas on histology.
2.
"Cavernous lymphangioma " first appears during infancy, when a rubbery nodule with no skin changes becomes obvious in the face, trunk, or extremity.
3.
Nodules ( A small mass of tissue or aggregation of cells ) in cavernous lymphangioma are large, irregular channels in the reticular dermis and subcutaneous tissue that are lined by a single layer of endothelial cells.