2022 Volume 13 Issue 2 Pages 55-60
A 60-month-old Japanese Black bull was presented with abnormal gait due to posterior paralysis. Spinal cord disorder was suspected, but physical examination and blood test findings were unremarkable. The bull was positive for bovine leukemia virus, but no lymphocytosis or lymphadenopathy was noted. Necropsy confirmed no swelling of the body surface or intracavitary lymph nodes, and there were no significant changes in the major organs. Postmortem computed tomography （CT） revealed enlargement of the areas of CT value that was equivalent to that of the nerve root at multiple nerve root bifurcations in the thoracolumbar region. The findings suggest that the nerve roots were swollen or surrounded by soft tissue. Macroscopic examination of the spinal cord after vertebral resection revealed tumors outside the lumbar spinal cord. Histopathological examination revealed infiltration of abnormal lymphocytes at the tumors, and T-cell lymphoma was diagnosed. This case was an extremely rare case of T-cell lymphoma, which occurred in the lumbar epidural space and resulted in posterior paralysis.
