POCUS (Point Of Care UltraSound) should be taught in medical school and can replace the stethoscope. It provides useful information to help diagnosis at the point of care. For flank pain/renal colic, POCUS can help identify upper ureteric stones, distal ureteric stones, and assess hydronephrosis and cortical loss. Doppler ultrasound can differentiate between hydronephrosis and vasculature. POCUS is also useful for identifying renal cysts, perinephric haematomas, and assessing prostate enlargement.