Cutaneous lymphangioma circumscriptum: frog spawn on the skin.

Lymphangiomas are congenital malformations of the lymphatic system that may involve the skin, subcutaneous tissues, and intestines. They account for 4% of all vascular tumors, but comprise 25% of benign vascular growths in children. They are hamartomatous in nature and may be grouped into cutaneous lymphangioma circumscriptum (CLC), cavernous lymphangiomas, and cystic hygromas. CLC appears localized to the dermis, although frequently extends deeper and laterally. It is important to distinguish CLC, a potentially recurrent disease, from an unusual type of metastatic carcinoma of the skin called carcinoma telangiectoides.