J Korean Orthop Assoc.  2015 Apr;50(2):148-153. 10.4055/jkoa.2015.50.2.148.

Infiltrating Epidural Angiolipoma Involving Lumbar Spine

• Kang JH
• Lee HS
• Jung DW
• Ha DJ
• Kwak JY
• Kim UC

• KMID: 2106751
• DOI: http://doi.org/10.4055/jkoa.2015.50.2.148

Abstract

We report on an unusual case with infiltrating extradural spinal angiolipoma. Most spinal angiolipomas involve the thoracic spine and infiltrating ones are also located mainly at the thoracic levels rather than lumbar lesion. In particular, there are few cases of lumbar extradural infiltrating type spinal angiolipoma. One case is that of a 52-year-old female with infiltrating extradural spinal angiolipoma involving lumbar 4 (L4) vertebra, who underwent a L4-5 laminectomy and surgical removal of the tumor. We achieved satisfactory results with surgical treatment of the patient. Spinal angiolipoma has a benign course with a good postoperative outcome.

Keyword

lumbar spine; epidural angiolipoma; laminectomy

MeSH Terms

Angiolipoma*
Female
Humans
Laminectomy
Middle Aged
Spine*

Figure

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  Figure 1 Preoperative plain radiograph shows a radiolucent lesion in lumbar 4 vertebral body (arrow).

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  Figure 2 Computed tomography (CT) scan and magnetic resonance imaging show a well-defined fatty mass at lumbar 4 (L4) vertebral body with bony erosion. (A) CT scan showing bony erosion of the right posterior L4 vertebral body. (B) T-1 weighted sagittal and axial images showing a hyperintense fatty mass in the right anterior epidural space. (C) T-2 weighted sagittal and axial images showing hypointense fatty mass in the right anterior epidural space.

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  Figure 3 T-1 weighted sagittal and axial images with gadolinium showing a hyperintense fatty mass in the right anterior epidural space.

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  Figure 4 Gross photograph shows a yellow-gray and soft-to-firm tumor in the epidural area-intraoperatively.

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  Figure 5 Microscopic photograph shows mature adipose tissue interspersed with well vascularized areas, indicative of angiolipoma. Hypovascularized area suggestive of a conventional lipoma (H&E, ×200).

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