FINDINGS:
The vertebral body heights and alignment appear maintained. Degenerative changes are seen and described below. No suspicious marrow signal abnormality. The conus terminates near approximately the L1 level.
L1-L2: No significant disc protrusion, bony canal or foraminal narrowing.
L2-L3: Slight disc bulging. No significant bony canal or foraminal narrowing.
L3-L4: Mild disc bulging. Mild right foraminal narrowing. No significant bony canal narrowing.
L4-L5: Mild disc bulging eccentric right with slight inferior extension of disc in the right paracentral region and mild impression on the ventral thecal sac and near the course of the descending right L5 nerve root. Mild degenerative facet disease and ligamentum flavum hypertrophy. Mild canal narrowing. Mild bilateral foraminal narrowing.
L5-S1: Mild disc bulging, and there appears to be slight inferior extension of disc in the right paracentral region near the course of the descending right S1 nerve root, incompletely included on the axial images. Mild degenerative facet disease. Mild bilateral foraminal narrowing. No significant bony canal narrowing.
IMPRESSION:
1. Degenerative changes of the lumbar spine, most conspicuous at L4-L5 and L5-S1 as above.
2. Additional findings as above
发现：
椎体高度和排列似乎保持不变。退行性变化见并描述如下。无可疑骨髓信号异常。圆锥在大约 L1 水平附近终止。
L1-L2：无明显椎间盘突出、骨管或椎间孔狭窄。
L2-L3：轻微的圆盘凸起。没有明显的骨管或椎间孔狭窄。
L3-L4：轻度椎间盘突出。轻度右侧椎间孔狭窄。没有明显的骨管狭窄。
L4-L5：轻度椎间盘突出偏向右侧，右侧旁中央区椎间盘轻微向下延伸，腹侧硬膜囊和右 L5 降神经根附近有轻度压印。轻度退行性小关节疾病和黄韧带肥大。轻度管狭窄。双侧椎间孔轻度狭窄。
L5-S1：轻度椎间盘膨出，在右S1降神经根走行附近的右侧中央旁区域似乎有轻微的椎间盘向下延伸，轴位图像不完整。轻度退行性小关节疾病。双侧椎间孔轻度狭窄。没有明显的骨管狭窄。
印象： 1.腰椎退行性改变，如上L4-L5和L5-S1最为明显。 2. 上述其他发现。
