Fig 1. A 31-year-old man with known generalized lymphangiomatosis presents with right proptosis.

A, Coronal fat-suppressed T2-weighted MR image demonstrates bilateral extramuscular hyperintense lesions. Additional masses with similar signal intensities are noted in the masticator spaces.

B, Low T1 signal intensity in these lesions without contract enhancement.

C, Coronal T2-weighted MR image demonstrates high-signal-intensity lesions in the occipital condyles and upper cervical vertebrae.