A 10-month-old female spayed Scottish Fold was referred to cardiology for incidental radiographic cardiomegaly. Echocardiography was suspicious for a right atrial or right auricular aneurysm. The differential diagnosis also included peritoneal–pericardial diaphragmatic hernia, mass lesion (cyst, granuloma, or neoplasia), or cardiac malformation. A giant right atrial aneurysm associated with a persistent left cranial vena cava was subsequently confirmed with computed tomography.

中文翻译：

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猫巨大右房动脉瘤与持续性左颅腔静脉相关

一只 10 个月大的雌性绝育苏格兰折耳猫因偶然出现放射学心脏肥大而被转诊至心脏病科。超声心动图怀疑右心房或右耳动脉瘤。鉴别诊断还包括腹膜-心包膈疝、肿块病变（囊肿、肉芽肿或肿瘤）或心脏畸形。随后通过计算机断层扫描证实了与持续性左颅腔静脉相关的巨大右房动脉瘤。