A 72 year old man with a history of atrial fibrillation was admitted with a basal ganglia interventricular haemorrhage. Warfarin was stopped on admission. Five days after presentation, he developed gradual, cramping, left sided abdominal pain radiating to the flank with urinary frequency but no haematuria. His inflammatory markers were elevated, serum urea and creatinine were normal, and urine microscopy was negative for blood, white cells, and bacteria. A computed tomography scan was arranged (fig 1). What does it show?
Axial computed tomography abdominal slice
Wedge shaped low attenuation areas in the left kidney with surrounding normal renal parenchyma suggest renal infarct.
Renal infarction is most commonly caused by thromboembolism or in situ thrombosis,1 which makes atrial fibrillation a substantial …

中文翻译：

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背部疼痛

一名72岁的男性，有房颤病史，曾因基底神经节脑室出血而入院。华法林在入院时被停药。出诊后五天，他逐渐出现痉挛性痉挛，左侧腹痛辐射至侧腹，尿频但无血尿。他的炎症标记升高，血清尿素和肌酐正常，尿液镜检对血液，白细胞和细菌呈阴性。安排了计算机断层扫描（图1）。它显示什么？
轴向计算机断层扫描腹部切片
左肾楔形低衰减区，周围肾实质正常，提示肾梗塞。
肾梗塞最常见是由血栓栓塞或原位血栓形成，1 这使心房颤动成为重要...