CANINE SPINAL NEPHROBLASTOMA

An eight-month-old, female, mixed-breed dog was presented with bilater al hind-limb paralysis that reportedly developed over a two-to-three w eek period and was not associated with trauma. Plain radiographs of th e spinal column were unremarkable, and a myelogram outlined an intrame dullary mass of the spinal cord at the first lumbar (L-1) vertebra. A hemilaminectomy was performed, and a mass that was identified histolog ically as nephroblastoma was excised from the spinal cord. Following s urgery, the dog became fully ambulatory and at 22 months postsurgery s he remains clinically normal. The diagnosis, treatment, progression, h istogenesis, and pathology of canine nephroblastoma are discussed.