1 Apply direct pressure until the bleeding stops. 2  Cover the injury with a sterile dressing shaped to the contour of the ear, and tape it loosely in place. 3  Apply cold compresses over the dressing to reduce pain and swelling.  If part of the ear has been cut off, keep the part.
The retroaortic or circumaortic renal vein may be compressed between the aorta and the vertebral body, which is called posterior nutcracker [8] and [12]. The clinical features of NP or posterior NP vary from asymptomatic microhematuria to severe pelvic congestion [8].
Both circumaortic and retroaortic left renal veins are. the result of persistence of the dorsal limb of the embry-. onic left renal vein and of the dorsal arch of the renal col-. lar (intersupracardinal anastomosis). However, in. retroaortic left renal vein the ventral arch regresses so. that a single renal vein passes posterior to the aorta.