An infant female presented from an outside hospital with an abdominal mass, identified as renal teratoma that suffered acute kidney injury (AKI) after surgery. Teratomas are uncommon neoplasms with the kidney being the rarest in location when considering less than 5% of teratomas occur in the abdomen. In this contribution, a case is described of spasm in the left renal artery causing AKI following abdominal surgery for primary mature renal teratoma. Renal artery spasm was detected by duplex ultrasound scan as was resolution of the spasm within two days of initial AKI presentation.