Arrow points to the chyloma on axial T1-weighted, gadolinium-enhanced MRI of the neck.The chyloma was located posterolateral to the left internal jugular vein at the level of the trachea (left level IV of the neck). At this location, the thoracic duct is expected to traverse the neck before it drains into the confluence of the internal jugular and subclavian veins. The chyloma was a 3.4 x 2.2 x 1.7cm circumscribed cystic lesion that was hypointense on T1 and did not enhance with the administration of gadolinium. The rest of the neck was unremarkable.