Article Figures & Data
Figures
- Figure 1
A 55-year-old man with multicentric osteosarcoma. Plain radiography shows multifocal osteosclerotic lesions in the pelvis and spine (A). Magnetic resonance imaging shows multiple vertebral and pelvic lesions with low-signal intensity on T2-weighted (B-top, middle) and T1-weighted (B-bottom) images. Whole-body bone imaging using technetium-99m shows uptake primarily in the bone of the trunk (C). A lesion is observed in the lung (yellow arrow), but it is relatively small in size (C-top). Extraosseous ossified lesions are observed in the mediastinum (top), retroperitoneum (middle), and mesentery (bottom) (D) (orange arrows).
- Figure 2
A 55-year-old man with multicentric osteosarcoma. In the osteosclerotic spine, the spinal canal is narrowed at T10-11. An axial view at T10 shows that this narrowing is due to an ossified lesion (A). Magnetic resonance imaging shows compression of the spinal cord (yellow arrow) on a T2-weighted image (B). Fixation and decompression of T8–12 was performed (C). Histologic analysis of the resected laminae shows an osteoid tumor with atypical cells among trabecular bone (D-top). Two months after surgery, the spinal canal is narrowed at T7 (D-bottom). Extraosseous lesions are indicated with orange arrows (D and E). The ossified lesion in the pelvis is increased in size (E).
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