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Fig. 4B —Image of granuloma in left upper lobe in 62-year-old woman in whom diagnosis was false-positive. Transverse diffusion-weighted (DW) image (9,050/50) obtained with b factor of 1,000 s/mm² shows nodule (arrow) with very high signal intensity compared with spinal cord; it scored 5 on 5-point rank scale. Spinal cord scored 3 on 5-point rank scale on DW images obtained with b factor of 1,000 s/mm².