Fig. 2

66-year-old woman with a history of breast cancer and presence of focal hyperplasia of hematopoietic marrow in the thoracic (Th10, Th11, Th12) and lumbar spine (L1). Images illustrate the Th12 and the L1 lesion (arrows); SSFP, steady-state free precession; H&E, hematoxylin and eosin. a Sagittal T1-weighted TSE MR image of the thoracic and lumbar spine shows focal areas of moderately decreased signal intensity in the vertebral bodies of Th12 and L1. b Sagittal T2-weighted TSE image with a signal drop in Th12 and L1 (corresponding to a). c Sagittal STIR image with slightly hyperintense signal in Th12 and L1 lesions. d Lesions show slight focal enhancement after gadolinium administration on a sagittal T1-weighted image. e Sagittal SSFP image with a hypointense signal of the Th12 and L1 lesion. f High-resolution CT scan without bone structure abnormalities in Th12 and L1. g Photograph of biopsy specimen (H&E, × 80) of the Th12 lesion shows hypercellular bone marrow with a reduced portion of adipocytes