A 24-year-old man is brought to the emergency department (ED), after having sustained blunt trauma to the left kidney during a boxing match. He is awake and alert. His chief complaint is flank tenderness. Urinalysis reveals microscopic hematuria. All other laboratory values are within normal limits. Vital signs are blood pressure 130/70 mmHg, pulse rate 76 beats/minute, and respiratory rate 20 breaths/minute. He is scheduled for transfer to the medical-surgical unit as soon as a bed is available. Which assessment findings indicate renal trauma: