Charnock Lauren, Doran Brianna, Milley Ellen, Preston Timothy
Atlantic Veterinary College, University of Prince Edward Island, 550 University Avenue, Charlottetown, Prince Edward Island C1A 4P3.
Can Vet J. 2020 Mar;61(3):257-262.
A 5-year-old spayed female German shepherd dog was referred for diagnostic evaluation and treatment of progressive exophthalmos, conjunctival hyperemia, and protrusion of the third eyelid of the left eye. Computed tomography revealed a retrobulbar mass of the orbit, exhibiting radio attenuation consistent with adipose tissue and well-defined margins. No evidence of metastasis was detected on thoracic radiographs or abdominal ultrasound. Cytological evaluation of ultrasound-guided fine-needle aspirates was inconclusive. A ventral transpalpebral anterior orbitotomy approach facilitated excision of the abnormal retrobulbar tissue. Histopathology revealed mature adipose cells compatible with a lipoma. The patient regained normal appearance and function 3 months after surgery. Key clinical message: While rare, consider a lipoma as a differential diagnosis for a retrobulbar mass. The ventral transpalpebral orbitotomy has been described in only 3 cases in the veterinary literature, and this is the only known report of utilizing this approach for excision of a neoplastic condition.
一只5岁已绝育的雌性德国牧羊犬因左眼进行性眼球突出、结膜充血和第三眼睑突出而被转诊进行诊断评估和治疗。计算机断层扫描显示眼眶球后有一个肿块，其放射衰减与脂肪组织一致，边界清晰。胸部X光片或腹部超声检查未发现转移迹象。超声引导下细针穿刺抽吸物的细胞学评估结果不明确。经睑腹侧前路眼眶切开术有助于切除异常的球后组织。组织病理学显示成熟脂肪细胞，符合脂肪瘤。术后3个月，患者恢复了正常外观和功能。关键临床信息：脂肪瘤虽罕见，但应考虑作为球后肿块的鉴别诊断。经睑腹侧眼眶切开术在兽医文献中仅报道过3例，这是已知唯一一篇利用该方法切除肿瘤性疾病的报告。
