Fig. 1From: Careful medical interview and ultrasonography enabled detection of acute kidney injury and hematoma after lumbar trigger point injection—a case reportUltrasound image of the left first lumbar level. Hypoechoic area (arrow head) suggestive of hematoma was detected below the trigger point injection site observed in the second emergency room. The renal parenchyma is a slightly hyperechoic area to the right of the renal hematomaBack to article page