Fig. 5
From: MR imaging features of orbital Langerhans cell Histiocytosis
a–d. The different performances in T1WI.Axial (a) T1-weighted MR images show isointensity, and the lesion performs diffuse thickening of the affected bone with ill-defined margins; Axial (b) T1WI show lesion located in the left lateral orbital wall presenting hypointensity and an unclear boundary; Coronal (c) T1-weighted MR images show mass located in the inferolateral left orbit presenting iso-hypointense mixed signals and an unclear boundary. Coronal (d) T1WI show lesion located in the superolateral right orbit performing isointensity with patchy hyperintensity inside