case_images: PMC10159329_01
case_images: Sagittal view of computed tomography scan showing lytic lesion (marked by arrow in the figure) in the body of S1 vertebra.
case_images: SNI-14-121-g001.jpg
case_images: PMC10159329_01_SNI-14-121-g001.jpg
case_images: F1
case_images: The X-rays and computed tomography (CT) scan of the lumbosacral spine showed a lytic S1 sacral alar lesion [Figures 1 and 2].
case_images: Coronal view of computed tomography scan showing expansile lesion in sacral ala (marked by arrow in the figure) and S1 vertebral body.
case_images: SNI-14-121-g002.jpg
case_images: PMC10159329_01_SNI-14-121-g002.jpg
case_images: F2
case_images: The X-rays and computed tomography (CT) scan of the lumbosacral spine showed a lytic S1 sacral alar lesion [Figures 1 and 2].
case_images: T2 weighted sagittal magnetic resonance imaging scan showing hyperintense lesion in S1 vertebral body expanding into the ala of sacrum (marked with arrow in figure).
case_images: SNI-14-121-g003.jpg
case_images: PMC10159329_01_SNI-14-121-g003.jpg
case_images: F3
case_images: The T1 magnetic resonance imaging images showed a hypointense lesion within the sacral ala and S1 body, while the T2 and short tau inversion recovery images revealed a hyperintense lesion with retropulsion into the spinal canal contributing to stenosis [Figure 3].
case_images: Biopsy photograph obtained from the patient showing features of giant cell tumor.
case_images: SNI-14-121-g004.jpg
case_images: PMC10159329_01_SNI-14-121-g004.jpg
case_images: F4
case_images: A percutaneous biopsy of the sacral ala confirmed the diagnosis of a GCT [Figure 4].
case_images: Intra operative picture showing Curetted S1 body lesion (marked by arrow in the figure) by anterior approach.
case_images: SNI-14-121-g005.jpg
case_images: PMC10159329_01_SNI-14-121-g005.jpg
case_images: F5
case_images: The patient first underwent an anterior transperitoneal tumor resection [Figure 5]; this was followed by a secondary posterior lumbopelvic fusion [Figure 6].
case_images: Post-operative radiograph done at 1 month after lumbopelvic fixation.
case_images: SNI-14-121-g006.jpg
case_images: PMC10159329_01_SNI-14-121-g006.jpg
case_images: F6
case_images: The patient first underwent an anterior transperitoneal tumor resection [Figure 5]; this was followed by a secondary posterior lumbopelvic fusion [Figure 6].