Isolated femoral osseous megalymphatics with chylous reflux: case report and review of the literature.

We report here the clinical and imaging findings of marked dilatation of the intraosseous lymphatic vessels, "megalymphatics," with chylous reflux presenting with pain and extensive lytic changes in a femoral bone of a child. Multimodality imaging findings, including radiographs, magnetic resonance imaging, ultrasound, scintigraphy and percutaneous osseous lymphangiography are described.