An 8-year-old Warmblood-cross mare presented for investigation of acute onset left hindlimb lameness. Nuclear scintigraphy identified a marked, focal, increase in radiopharmaceutical uptake in the distal aspect of the left tibia. Radiography revealed a large, oval, multi-loculated radiolucent area within the medulla of the distal metaphysis of the left tibia. The mare was treated conservatively for 6 months but showed little improvement in the lameness so the owner elected for euthanasia. Post-mortem computed tomographic imaging revealed a large, oval, hypoattenuating area within the distal tibia, surrounded by a thick, irregular, sclerotic border. The lesion occupied the majority of the medullary cavity but the cortical bone was unaffected. Gross and histopathological examination confirmed a diagnosis of a bone infarction in the medullary cavity of the distal tibia.

中文翻译：

---

经组织学证实的温血马胫骨远端骨梗死的高级成像

一头 8 岁的温血马杂交母马因急性发作的左后肢跛行而接受调查。核显像确定了左胫骨远端放射性药物摄取的显着、局灶性增加。放射学检查显示左胫骨远端干骺端的髓质内有一个大的、椭圆形的、多室的射线可透区。母马接受了 6 个月的保守治疗，但跛行几乎没有改善，因此主人选择了安乐死。死后计算机断层扫描成像显示胫骨远端内有一个大的椭圆形低密度区域，周围环绕着厚厚的、不规则的、硬化的边界。病变占据了髓腔的大部分，但皮质骨不受影响。