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A 69-year-old woman with a brucella infection for 2.5 months without any previous antibiotic treatment. (A) T1-weighted image shows hypointensity of the L3-L4 vertebral bodies, showing evident front fan-shape shade. (B and C) T2-weighted and FS MRIs show infection starting from the anterior of the endplate in both L3 and L4 and then involving the disc from L4 vertebra, which we called the Disc Invasion Sign (arrow), and invading the vertebral body (in fan shape).
