Spinal Metastasis of Well-Differentiated Liposarcoma Component in Retroperitoneal Dedifferentiated Liposarcoma Treated by Minimally Invasive Surgery

Figure 1

Abdominal computed tomography (CT). (a) Enhanced CT prior to the first surgery showed a large retroperitoneal mass in the second lumbar vertebra level, which consisted of both lipomatous (yellow asterisk) and nonlipomatous (red asterisk) components. Plain CT at 8 months (b) and 3 months (c) before our first visit showed metastatic lipomatous component (red arrow) involved in the vertebral body. (d, e) CT findings at our first visit showed both lipomatous (yellow asterisk) and nonlipomatous (red asterisk) components; in addition, the metastatic lipomatous component in the vertebral body had increased and destroyed the vertebral body. Magnetic resonance image of the lumbar spine. Axial T1-weighted (f), T2-weighted (g), and enhanced T1-weighted images (h) showed the mass with a similar intensity to fat and widespread from the vertebral body to the canal space (yellow arrow).

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