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Magnetic resonance imaging right parasagittal T1-weighted (A) and T2-weighted (B) images demonstrated high signal intensity within the L5 pars interarticularis (white arrows). Right parasagittal T2-weighted image with fat suppression demonstrated that the high signal intensity was reduced on fat saturation, suggesting fatty marrow infiltration in response to the defect of the pars interarticularis (C; white arrowhead).
