case_images: PMC4142467_01
case_images: 27-year-old male presented with chronic low back pain for a year and half after he sustained minor back trauma at work. Pain was radiating to both lower extremities, but more to the right side. It was later diagnosed as a form of spinal cord malformation. a) Sagittal T2W and b) axial T2W MRI of the thoracic spine show arachnoid cyst posterior to T5 and T6 segments of the spinal cord causing anterior displacement of the cord and posterior cord flattening (arrowhead). Epidural arachnoid cyst herniation through the posterior dura is a possible differential diagnosis.
case_images: JCIS-4-32-g002.jpg
case_images: PMC4142467_01_JCIS-4-32-g002.jpg
case_images: F1
case_images: Magnetic resonance imaging (MRI) of his spine showed an arachnoid cyst posterior to T5 and T6 segments of the spinal cord causing anterior displacement of the cord and posterior cord flattening [Figure 1].
case_images: 27-year-old male presented with chronic low back pain for a year and half after he sustained minor back trauma at work. Pain was radiating to both lower extremities, but more to the right side. It was later diagnosed as a form of spinal cord malformation. a) Sagittal T2W and b) axial T2W MRI of the thoracic spine show split cord (arrowhead) starting at the level of T7-T8 spine segment and continuing down to the level of T12 where the two hemicords then fused back into normal conus medullaris.
case_images: JCIS-4-32-g003.jpg
case_images: PMC4142467_01_JCIS-4-32-g003.jpg
case_images: F2
case_images: T7-T8, splitting of the spinal cord was observed and continued down to the level of T12 where the two hemicords then fused back to a normal conus medullaris [Figure 2]. The low-lying conus medullaris that once again split into two hemicords at the L3-L4 level with a low-lying tethered cord inserted posteriorly at S1 is seen in Figure 3.
case_images: 27-year-old male presented with chronic low back pain for a year and half after he sustained minor back trauma at work. Pain was radiating to both lower extremities, but more to the right side. It was later diagnosed as a form of spinal cord malformation. a) Sagittal T2W and b) axial T2W MRI of the lumbar spine show a low-lying conus medullaris that once again split into two hemicords (arrowhead in b) at the L3-L4 level, with a low-lying tethered cord inserted posteriorly at S1. Notice in the sagittal T2W MRI the presence of intradural hyperintense circular lesion and hyperintense lesion in T1W (not shown) characteristic for lipoma (arrowhead in a).
case_images: JCIS-4-32-g004.jpg
case_images: PMC4142467_01_JCIS-4-32-g004.jpg
case_images: F3
case_images: T7-T8, splitting of the spinal cord was observed and continued down to the level of T12 where the two hemicords then fused back to a normal conus medullaris [Figure 2]. The low-lying conus medullaris that once again split into two hemicords at the L3-L4 level with a low-lying tethered cord inserted posteriorly at S1 is seen in Figure 3.