Magnetic resonance imaging findings of an intradural extramedullary hemangiosarcoma in a dog.

Kutara K, Maeta N, Kanda T, Ohnishi A, Mitsui I, Miyabe M, Shimizu Y, Okamura Y

An 11-year-old male Miniature Dachshund was referred for acute neurological deficits in the pelvic limbs. T2-weighted magnetic resonance imaging revealed that the spinal cord at the L1-2 intervertebral disc space was heterogeneously hyperintense in the sagittal plane and was mildly compressed from the ventral side by a small hypointense mass in the transverse plane. However, the lesion showed mass enhancement and severe spinal cord compression on post-contrast T1-weighted imaging. On three-dimensional myelography, a "golf tee sign" was observed around the mass. Therefore, we diagnosed an intradural extramedullary lesion. The mass was surgically removed and histologically diagnosed as a hemangiosarcoma. The "golf tee sign" observed on magnetic resonance myelography may be useful for distinguishing intradural extramedullary masses from intramedullary masses.

The Journal of Veterinary Medical Science

81

10

1527

1532

10.1292/jvms.19-0260

https://www.ncbi.nlm.nih.gov/pubmed/31484834