Usefulness of serum d-dimer level in acute renal infarction

Acute renal infarction (ARI) is a rarely encountered disease in emergency services, but is of particular importance owing to higher mortality and morbidity rates in the absence of early diagnosis and intervention. On the other hand, urolithiasis cases are admitted to emergency departments very frequently with the complaint of pain. ARI with non-specific symptoms or urolithiasis-like pain would increase the likelihood of being omitted in crowded emergency rooms. Previous studies reported supportive diagnostic role in ARI of increased serum lactate dehydrogenase and C-reactive protein levels and white blood cell count in the presence of hematuria; however, none mentioned D-dimer as a likely diagnostic or prognostic marker. We hereby present 2 case reports where a contrast-enhanced tomographic scan performed on the basis of suspicions raised by high serum D-dimer levels which established the definitive diagnosis ARI. Our aim was to emphasize that serum D-dimer may be used as a criterion for supporting or excluding the thromboembolic events, such as renal and mesenteric infarction.