Jones Susan, Adin Christopher, Thompson Elizabeth, Robertson Ian, Rivas Rudy
From the Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina.
J Am Anim Hosp Assoc. 2019 Jul/Aug;55(4):e55403. doi: 10.5326/JAAHA-MS-6891. Epub 2019 May 17.
A 6 mo old male castrated bloodhound-Rhodesian ridgeback mix (case 1) presented for a mass suspected to be a dermoid sinus in the thoracolumbar region, and a 2.5 yr old male castrated Rhodesian ridgeback (case 2) presented for a mass suspected to be a dorsal cervical dermoid sinus. Both dogs underwent single-phase contrast computed tomography (CT) to characterize the extent of the dermoid sinus prior to surgical excision. Soft tissue and bony abnormalities of the vertebral spine associated with the dermoid sinuses were confirmed in both dogs prior to surgery, demonstrating communication with the dura of the spinal cord. Surgical exploration and excision of the dermoid sinus was performed in each dog, including partial laminectomy. Both cases had resolution of the sinus and an uncomplicated recovery. These cases show that single-phase contrast CT was accurate in characterizing the extent of the dermoid sinus without adjunctive tests or more invasive diagnostics. Single-phase contrast CT should be considered as a preoperative method to characterize the extent of dermoid sinuses, avoiding the risks associated with myelography or fistulography and the expense of MRI. This is also the first report of a dermoid sinus in the thoracolumbar region and the first in a bloodhound and Rhodesian ridgeback mix.
一只6个月大的雄性去势寻血猎犬与罗德西亚脊背犬的混血犬（病例1）因怀疑胸腰段区域有皮样窦肿块前来就诊，一只2.5岁的雄性去势罗德西亚脊背犬（病例2）因怀疑颈背部皮样窦肿块前来就诊。两只犬均接受了单相对比计算机断层扫描（CT），以在手术切除前确定皮样窦的范围。两只犬在手术前均证实了与皮样窦相关的脊柱软组织和骨质异常，显示与脊髓硬膜相通。每只犬都进行了皮样窦的手术探查和切除，包括部分椎板切除术。两例的窦道均消失且恢复过程顺利。这些病例表明，单相对比CT在确定皮样窦范围方面准确无误，无需辅助检查或更具侵入性的诊断方法。单相对比CT应被视为术前确定皮样窦范围的方法，可避免与脊髓造影或瘘管造影相关的风险以及磁共振成像的费用。这也是胸腰段区域皮样窦的首例报告，也是寻血猎犬与罗德西亚脊背犬混血犬的首例报告。
