Magnetic resonance imaging and [11C]methyl-L-methionine positron emission tomography of fibrous dysplasia -: Two case reports

Two cases of fibrous dysplasia in the skull base bone appeared hypointense on T-1- and T-2-weighted magnetic resonance imaging, with accumulation of [C-11]methyl-L-methionine ([C-11]Met) on positron emission tomography (PET). Fibrous dysplasia is a benign bone disorder which is identified by its distinctive radiography, computed tomography, and bone scintigraphy findings. [C-11]Met PET may indicate the presence of viable tumor-like cells in fibrous dysplasia.