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Fig. 5D 40-year-old man with recurrent adamantinoma. Diagnosis of
recurrence is further supported by axial MR images, which reveal T1 signal
isointense to surrounding muscle (TR/TE, 500/9) (C), mildly
heterogeneous high signal intensity on fat-saturated T2-weighted image
(4,000/83) (D), and homogeneous enhancement on T1-weighted image after
administration of IV contrast material (500/9) (E). MRI reveals
complete infiltration of marrow cavity, which is greater extent of disease
than expected on basis of radiography.