The most common diagnostic tools used to investigate the effect is lymphangioma and ultrasound, Doppler ultrasound, computed tomography (CT scan) and magnetic resonance imaging. Ultrasound shows hypoechogenic superficial multilocular cystic mass, but failed to show expansion retropharyngeal, axillary or mediastinum. With a CT scan, it may be difficult to distinguish the mass of soft tissue structures. More recently, MRI has been shown to be better in describing the boundaries of tumors and can more accurately describe the network.