Kim Kihoon, Kim Hyungjoon, Kim Hyosung, Lee Yeonhea, Kim Jaehwan, Do Sunhee, Kim Hwiyool
Department of Surgery, College of Veterinary Medicine, Konkuk University, Seoul 05029, Korea.
Baeksan Feline Medical Center, Seoul 06223, Korea.
Vet Sci. 2022 Oct 27;9(11):594. doi: 10.3390/vetsci9110594.
A 7-year-old spayed female domestic shorthair cat presented with a swollen right forelimb and mild lameness. On physical examination, the mass was palpable in the right humeral region, and the cat exhibited pain on palpation. Radiography revealed an expansile osteolytic lesion at the proximal end of the right humerus. Computed tomography (CT) revealed an expansile bony mass on the proximal end of the right humerus and a mild periosteal reaction around the acromion of the scapula. Amputation of the right forelimb, including the scapula and removal of the axillary lymph node, were strongly recommended to the owner, but were declined. Four months after the initial presentation, the cat presented with a dramatically swollen right forelimb and progressive lameness. CT was performed again. In addition to osteolytic changes in the mass, vascular development had occurred at the cranioproximal region. The right forelimb, including the scapula and ipsilateral lymph nodes, was removed. The cat died during the postoperative recovery period. Based on clinical, diagnostic imaging, and histological findings, the final diagnosis was aneurysmal bone cyst. To the best of our knowledge, this is the first case of an aneurysmal bone cyst in the humerus of a cat.
一只7岁已绝育的雌性家养短毛猫出现右前肢肿胀和轻度跛行。体格检查时，在右肱骨区域可触及肿块，触诊时猫表现出疼痛。X线摄影显示右肱骨近端有一个膨胀性溶骨性病变。计算机断层扫描（CT）显示右肱骨近端有一个膨胀性骨质肿块，肩胛骨肩峰周围有轻度骨膜反应。强烈建议主人对其进行右前肢截肢，包括肩胛骨并切除腋窝淋巴结，但主人拒绝了。首次就诊四个月后，这只猫右前肢明显肿胀且跛行加重。再次进行了CT检查。除了肿块内的溶骨改变外，在颅近端区域还出现了血管发育。切除了右前肢，包括肩胛骨和同侧淋巴结。这只猫在术后恢复期死亡。根据临床、诊断影像学和组织学检查结果，最终诊断为动脉瘤样骨囊肿。据我们所知，这是首例猫肱骨动脉瘤样骨囊肿病例。
