Long Island Bird and Exotics Veterinary Clinic, Great Neck, NY 11021, USA,
Long Island Bird and Exotics Veterinary Clinic, Great Neck, NY 11021, USA.
J Avian Med Surg. 2022 Aug;36(2):215-219. doi: 10.1647/21-00065.
A 15-year-old female peach-faced lovebird () was presented to the hospital for a possible left wing injury and an inability to fly after falling in its cage. On physical examination the left elbow was swollen and painful. Radiographic images revealed left wing soft tissue swelling surrounding the elbow and lysis of the distal humerus with extensive cortical thinning. Subsequent high-definition volumetric-imaging 3-dimensional computed tomography (HDVI 3D CT) revealed a pathological fracture, cortical lysis, periosteal reaction, and abnormal intraosseous soft tissue of the left humerus with associated soft tissue swelling, suggestive of neoplasia. No evidence of metastatic disease was identified. Surgical amputation of the left wing was elected. A liposarcoma and pathologic fracture of the humerus were diagnosed histologically and by oil red O staining for lipids in the neoplastic cells. The morphologic features of the tumor suggested that it developed within the adipocyte component of the medullary bone. The incision at the amputation site healed without complication. A follow-up HDVI 3D CT performed 4 months postsurgery showed no evidence of metastatic disease. To the authors' knowledge, this is the first report of a primary liposarcoma of medullary bone origin in an avian species.
一只 15 岁雌性桃面爱情鸟（）因左翅膀受伤和无法飞行而被送到医院，可能是从笼子里掉下来造成的。在体格检查时，左肘肿胀和疼痛。影像学图像显示左翅肘部周围软组织肿胀，肱骨远端有骨溶解，广泛的皮质变薄。随后的高清容积成像 3 维计算机断层扫描（HDVI 3D CT）显示病理性骨折、皮质溶解、骨膜反应和左肱骨异常骨髓内软组织，伴有软组织肿胀，提示为肿瘤。未发现转移性疾病的证据。选择对左翅膀进行手术截肢。组织病理学和肿瘤细胞内油红 O 染色显示脂质，诊断为脂肪肉瘤和肱骨病理性骨折。肿瘤的形态学特征表明它是在骨髓骨的脂肪细胞成分内发展的。截肢部位的切口愈合良好，无并发症。手术后 4 个月进行的后续高清容积成像 3 维计算机断层扫描（HDVI 3D CT）显示无转移性疾病的证据。据作者所知，这是首例鸟类骨髓源性原发性脂肪肉瘤的报告。
