Largely dilated lymphatic spaces up to 15 cm in diameter in the neck or axilla of children, often associated with Turner's syndrome, describe which lesion?

• A. Cavernous lymphangioma (cystic hygroma)
• B. Hemangioma
• C. Lymphangioma circumscriptum
• D. Venous malformation

Answer: (A)

Cavernous lymphangioma, described as a lymphatic malformation with very large, dilated lymphatic spaces, fits this picture. When these spaces are in the neck, the lesion is often called a cystic hygroma. In children, such multichambered, fluid-filled cavities can reach large sizes—up to many centimeters—and are commonly associated with Turner syndrome due to underlying lymphatic developmental abnormalities. This distinguishes it from hemangiomas (blood vessel proliferations), which are typically vascular lesions of blood rather than lymphatic channels; lymphangioma circumscriptum is a more superficial, microcystic lymphatic proliferation; and venous malformations are abnormal venous channels, not lymphatic spaces.