case_images: PMC6727451_01
case_images: T2-weighted sagittal magnetic resonance image showed that the cord was compressed severely, one line of the ventral dura was divided into two by a disc herniation and it seemed to be a "Y," so it was called "Y-sign."
case_images: JOCR-9-30-g001.jpg
case_images: PMC6727451_01_JOCR-9-30-g001.jpg
case_images: F1
case_images: T2-weighted sagittal magnetic resonance image (MRI) showed a C6-C7 herniated disc compressing the cord and we could see the "Y-sign" (Fig. 1)described by Sasaji et al., which meant that one line of the ventral dura was divided into two by a disc herniation and it seemed to be a "Y."
case_images: T2-weighted axial magnetic resonance image showed that the spinal cord is significantly compressed to the right by a large disc herniation-like mass on the left side.
case_images: JOCR-9-30-g002.jpg
case_images: PMC6727451_01_JOCR-9-30-g002.jpg
case_images: F2
case_images: T2-weighted axial MRI showed that the spinal cord is significantly compressed to the right by a large disc herniation-like mass on the left side (Fig. 2). The mass did not present contrast enhancement in the gadolinium-enhanced MRI (Fig. 3).
case_images: In the gadolinium-enhanced magnetic resonance image, the mass did not present contrast enhancement.
case_images: JOCR-9-30-g003.jpg
case_images: PMC6727451_01_JOCR-9-30-g003.jpg
case_images: F3
case_images: T2-weighted axial MRI showed that the spinal cord is significantly compressed to the right by a large disc herniation-like mass on the left side (Fig. 2). The mass did not present contrast enhancement in the gadolinium-enhanced MRI (Fig. 3).
case_images: Intraoperative photograph before removal of the herniated disc fragment. On opening the dura, the top of the disc fragment (arrow) was visualized.
case_images: JOCR-9-30-g004.jpg
case_images: PMC6727451_01_JOCR-9-30-g004.jpg
case_images: F4
case_images: After opening the dura, larger pieces of nucleus pulpous were exposed (Fig. 4), with cerebrospinal fluid (CSF) leakage, and then, we clamped out the mass.
case_images: The height of anterior and middle column was satisfactorily reconstructed in the post-operative anterior-posterior and lateral X-ray (a) and computed tomography scans (b).
case_images: JOCR-9-30-g005.jpg
case_images: PMC6727451_01_JOCR-9-30-g005.jpg
case_images: F5
case_images: The height of anterior and middle columns was restored on the post-operative plain radiographs and CT scans (Fig.5).
case_images: No "Y-sign"was observed in the post-operative T2-weighted sagittal magnetic resonance image.
case_images: JOCR-9-30-g006.jpg
case_images: PMC6727451_01_JOCR-9-30-g006.jpg
case_images: F6
case_images: T2-weighted sagittal MRI any more (Fig. 6). The patient proposed no complaint during the post-operative follow-up.