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Figure 8: 70-year-old male patient presented with history of low backache for a period of 6 years. MRI showed enlarged, flattened spinous processes (arrow heads in b) at L3-4 and L4-5 levels on T1, T2 W images (a and b). There is a linear hyper intense signal noted between L4-5 vertebral spinous processes on STIR (arrow in c). Enhancement is noted at L4, L5 vertebral bodies on post contrast T1 (d). CT (e) also showed vacuum phenomenon (gas in the discs) at L3-4, L4-5 intervertebral disc levels, grade I spondylolisthesis of L4 over L5. Imaging features in this clinical context was consistent with Baastrup's disease

Figure 8: 70-year-old male patient presented with history of low backache for a period of 6 years. MRI showed enlarged, flattened spinous processes (arrow heads in b) at L3-4 and L4-5 levels on T1, T2 W images (a and b). There is a linear hyper intense signal noted between L4-5 vertebral spinous processes on STIR (arrow in c). Enhancement is noted at L4, L5 vertebral bodies on post contrast T1 (d). CT (e) also showed vacuum phenomenon (gas in the discs) at L3-4, L4-5 intervertebral disc levels, grade I spondylolisthesis of L4 over L5. Imaging features in this clinical context was consistent with Baastrup's disease