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Fig. 1 | BMC Musculoskeletal Disorders

Fig. 1

From: Hematopoietic islands mimicking osteoblastic metastases within the axial skeleton

Fig. 1

64-year-old woman with a history of breast cancer and focal hyperplasia of hematopoietic marrow in the massa lateralis of the sacrum. Arrows point to the lesion; H&E, hematoxylin and eosin. a Coronal T1-weighted TSE MR image of the sacral spine shows a focal area of moderately decreased signal intensity in the left massa lateralis. b Axial T2-weighted TSE image with a focal signal drop in the left massa lateralis (corresponding to a). c Slight hyperintense signal of the lesion is shown on the coronal STIR image. d On the axial contrast-enhanced fat-saturated T1-weighted image, the lesion shows slight enhancement. e High-resolution CT scan without any bone structure abnormalities (note: prone position before CT-guided biopsy). f Photograph of biopsy specimen (H&E, × 80) of the lesion shows hypercellular bone marrow with a reduced number of adipocytes. No neoplastic cells were found

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