Abstract
Lymphangiomatosis is a rare disease with multifocal lymphatic proliferation that typically occurs during childhood and involves multiple parenchymal organs including the lung, liver, spleen, bone, and skin. Lymphangiomatosis may occur synchronously or metachronously with cystic hygroma of the neck. We present US, CT, and MRI findings of cystic hygroma of the neck associated with generalized lymphangiomatosis affecting bones and spleen in a 2-year-old girl.