Radiology Packet 18 Spine - Myelogram

9 yr old male Rottweiler “Kaiser” HX = presented for evaluation of ataxia, has been occuring for 6 weeks and has ascended from the hind limbs to the forelimbs

9 yr old male Rottweiler “Kaiser”

9 yr old male Rottweiler “Kaiser”

9 yr old male Rottweiler “Kaiser” RF Large mineralized disc at C2-3. Narrowing of the intervertebral disc space is present at C6-7. There is narrowing of the dorsal and ventral columns at C6-7. Ventrally the contrast is split over the body of C6 and the caudal body of C7. RD Compressive lesion at C6-7 Most likely extradural disc extrusion Next Surgery

6 yr old FS mix breed dog “Lady” HX = Presented for an acute rear limb paralysis but has had a long history of some hind end weakness

6 yr old FS mix breed dog “Lady”

6 yr old FS mix breed dog “Lady”

6 yr old FS mix breed dog ‘Lady” RF Mineralized IV disc material T12-13, T13-L1, L2-3, L3-4, L4-5, L5-6, L6-7 and LS. There is opacity over the intervertebral foramen at L2-3. There is mild spondylosis present at T11-12. There are two sites of dorsal deviation of the central subarachnoid contrast column, T13-L1 and L2-3. On the lateral views the dorsal contrast column is narrowed beginning at T12 and extending to L1-2. On the VD views the contrast column noticeably thins beginning at mid T10 and extending to mid L3. RD IV disc protrusion with spinal cord edema and swelling centered over T13-L1 disc space Chronic disc protrusion at L2-3 Next Surgery at T13-L1

7 yr old female Bearded Collie “Sheba” HX = presented with neck pain and left-sided root signature

7 yr old female Bearded Collie “Sheba”

7 yr old female Bearded Collie “Sheba” RF Calcified disc at C6-7. There is thinning of the ventral and dorsal subarachnoid space on the lateral view at C6-7. On the VD view there is a focal axial deviation of the left subarachnoid space at C6-7. RD Left-sided IV disc protrusion at C6-7 Next Surgery

7 yr old MC Doberman HX = none

7 yr old MC Doberman

7 yr old MC Doberman

7 yr old MC Doberman

7 yr old MC Doberman RD Next RF Wedging of the C4-5, C5-6, C6-7, and C7-T1 IV disc spaces. Mild dorsal tilting of the cranial aspect of C5 and C6. On the myelogram views there is a focal dorsal elevation of the ventral contrast column at C6-7 with mild thinning of the dorsal contrast column. The elevation is less severe on flexion of the neck, during traction of the neck the ventral column is still dorsally deviated but the dorsal column is slightly improved. RD Hypertrophy of the dorsal longitudinal ligament secondary to cervical instability (Canine Wobbler Syndrome) Next Surgery

6 yr old FS Mix Breed Dog “Maggie” HX = presented for progressive hind-end ataxia

6 yr old FS Mix Breed Dog “Maggie”

6 yr old FS Mix Breed Dog “Maggie”

6 yr old FS Mix Breed Dog “Maggie”

6 yr old FS Mix Breed Dog “Maggie” RF Incidental finding of a transitional vertebra at the lumbosacral junction on the survey films. There is a marked dorsal deviation of the dorsal contrast column at the cranial aspect of L2. Loss of the ventral contrast column is present over the body of L2 and extending caudally over the L2-3 IV disc space. There is a loss of the right contrast column over the body of L2, the left contrast column is attenuated but still visible at this level. RD Extradural compressive lesion at L2 Most likely cause is a mass lesion in the extradural space, r/o’s include plasma cell myeloma, lympohsarcoma