Veterinary Medical Center, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan.
Laboratory of Cell Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan.
Vet Med Sci. 2022 Jul;8(4):1611-1616. doi: 10.1002/vms3.840. Epub 2022 Jun 2.
A 3-year-old, castrated male mixed-breed cat presented with an almost 2-year history of chronic loose stools. On radiography and ultrasound examination, there were two masses in the centre of the abdomen. Contrast-enhanced computed tomography revealed that the masses were enlarged mesenteric lymph nodes with fluid accumulation. Percutaneous lesion drainage yielded pus-like fluid. Fluid cytology revealed numerous neutrophils and Gram-negative rods. Pus culture identified Escherichia coli as the causative organism. Consequently, mesenteric lymph node abscesses were definitively diagnosed. Since computed tomography showed that the abscesses adhered to the surrounding tissues, it was difficult to remove them surgically. With drainage and antimicrobial therapy, the mesenteric lymph nodes gradually decreased in size. However, loose stools persisted. The cat's diet was changed to a hydrolysed diet, and the clinical symptoms improved, suggesting food-responsive enteropathy. This may be an underlying disease of lymph node abscesses. Lymph node abscesses limited to the mesenteric lymph nodes rarely occur in veterinary medicine, and this is the first report in cats.
一只 3 岁已去势的雄性混血猫，表现出近 2 年的慢性稀便史。在放射学和超声检查中，腹部中央有两个肿块。增强 CT 显示这些肿块是增大的肠系膜淋巴结伴积液。经皮病变引流得到脓性液体。液体细胞学检查显示大量中性粒细胞和革兰氏阴性杆菌。脓液培养鉴定出大肠杆菌为病原体。因此，明确诊断为肠系膜淋巴结脓肿。由于 CT 显示脓肿与周围组织粘连，难以通过手术切除。通过引流和抗菌治疗，肠系膜淋巴结逐渐缩小。然而，稀便仍持续存在。将该猫的饮食改为水解饮食后，临床症状得到改善，提示食物反应性肠炎。这可能是淋巴结脓肿的潜在疾病。局限于肠系膜淋巴结的淋巴结脓肿在兽医中很少见，这是猫的首例报告。
