Imaging of a subcutaneous abscessation in the back of a calf with hindlimb paralysis.

IF 0.9 Q3 VETERINARY SCIENCES Open Veterinary Journal Pub Date : 2024-08-01 Epub Date: 2024-08-31 DOI:10.5455/OVJ.2024.v14.i8.40
Takeshi Tsuka, Noriyo Usaki, Midori Hatanaka, Yusuke Murahata, Takashi Takeuchi, Yuji Sunden, Takehito Morita, Yoshiharu Okamoto, Miyuu Tanaka, Takeshi Izawa, Mitsuru Kuwamura, Norio Yamagishi
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Abstract

Background: Ultrasonography is not chosen as the common imaging modality to diagnose spinal cord diseases. The present report indicates good diagnostic efficacy of ultrasonography for identifying spinal cord compressed by subcutaneous mass when scanning through the defected vertebral laminae and spinous process.

Case description: A five-month-old female Holstein calf presented with progressive hindlimb paralysis following a surgical resection of a back mass conducted at 21 days of age. The mass was subsequently histopathologically diagnosed as a pulmonary choristoma. Alongside hindlimb paralysis, the calf developed a swollen back at the lumbar region where the mass was removed. This suggested regrowth of the resected mass, causing injury to the underlying spinal cord. Ultrasonography identified the subcutaneous involvement of the capsular mass, which had three anechoic cavities separated by the echogenic septal structures. The spinal cord could be ultrasonographically demonstrated as adjacent to the mass through the defected vertebral laminae and spinous process in the second and third lumbar vertebras. Ultrasound-guided centesis allowed the collection of purulent exudates in which Escherichia coli was isolated. Myelography and subsequent computed tomography (CT) revealed a partial blockage of the intradural flow of contrast media at the levels of the second and third lumbar vertebras, diagnosed as spina bifida on the CT images. When applying ultrasonography to the spinal cord within a saline pool soon after the subcutaneous abscess was successfully resected, the spinal cord was characterized by the interrupted and partly extended hyperechogenic line of the central canal within the echogenic parenchyma. The echotexture of the spinal cord showed damage due to compression from the subcutaneous abscess. The animal had a sub-optimal postoperative outcome, including limited improvement of the neurological signs.

Conclusion: In the present case, combining ultrasonography, radiography (myelography), and CT was very effective for diagnosing spina bifida, with the subcutaneous abscess inducing spinal cord compression. Additionally, using intraoperative ultrasonographic scanning to evaluate the degree of spinal cord damage can contribute to predicting the postoperative outcome.

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后肢瘫痪的小牛背部皮下脓肿成像。
背景:超声波检查并未被选为诊断脊髓疾病的常用成像方式。本报告显示,当通过缺损的椎板和棘突扫描时,超声波检查对识别被皮下肿块压迫的脊髓具有良好的诊断效果:一只五个月大的雌性荷斯坦小牛在出生 21 天时因背部肿块接受了手术切除,随后出现了进行性后肢瘫痪。肿块后经组织病理学诊断为肺脉管瘤。在后肢瘫痪的同时,小牛腰部肿块切除处的背部也出现肿胀。这表明切除的肿块又重新生长,对脊髓造成了损伤。超声波检查确定了囊性肿块的皮下受累情况,肿块有三个无回声腔,被回声隔结构隔开。通过第二和第三腰椎的缺损椎板和棘突,超声波显示脊髓与肿块相邻。超声引导下的穿刺术收集了脓性渗出物,并分离出大肠杆菌。脊髓造影术和随后的计算机断层扫描(CT)显示,造影剂在第二和第三腰椎处的硬膜内流动部分受阻,CT 图像诊断为脊柱裂。在成功切除皮下脓肿后不久,在生理盐水池内对脊髓进行超声检查时,脊髓的特征是回声实质内中央管的高回声线中断并部分延伸。脊髓的回声纹理显示出皮下脓肿压迫造成的损伤。该动物的术后效果并不理想,包括神经体征的改善有限:结论:在本病例中,结合超声波检查、放射线检查(脊髓造影)和 CT 对诊断脊柱裂(皮下脓肿导致脊髓受压)非常有效。此外,利用术中超声扫描评估脊髓损伤程度有助于预测术后结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Open Veterinary Journal
Open Veterinary Journal VETERINARY SCIENCES-
CiteScore
1.40
自引率
0.00%
发文量
112
审稿时长
12 weeks
期刊介绍: Open Veterinary Journal is a peer-reviewed international open access online and printed journal that publishes high-quality original research articles. reviews, short communications and case reports dedicated to all aspects of veterinary sciences and its related subjects. Research areas include the following: Infectious diseases of zoonotic/food-borne importance, applied biochemistry, parasitology, endocrinology, microbiology, immunology, pathology, pharmacology, physiology, epidemiology, molecular biology, immunogenetics, surgery, ophthalmology, dermatology, oncology and animal reproduction. All papers are peer-reviewed. Moreover, with the presence of well-qualified group of international referees, the process of publication will be done meticulously and to the highest standards.
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