I went for ultrasound scanner after I experience lower back and testicles pain, the report says" Gall bladder: well distended, no evidence of calculi Kidneys: normal in size, smooth contours. Right kidney measure 10.5*5.5 cm, E/o cyst noted in upper pole measuring 1.5*1.3 cm Left kidney measure 9.5*6.5 cm E/o calcus noted in mid pole measuring 3.4 mm size Urinary Bladder over distended Prostate measure 3.5*2.4*2.5 cm, vol 11 cc Impression: simple right renal cortical cyst Non obstructive small left renal calculus. Suggest CT kub for better evaluation.