[Differential diagnosis of renal colic]

Potential of modern examinations in differential diagnosis of renal colic and other emergency states is considered. Renal ultrasonography permits in the majority of cases to make diagnosis based on dilatation of caliceal-pelvic system, sometimes with detection of obstruction cause. It is necessary to differentiate parapelvical cysts from dilatation of caliceal-pelvic system, therefore pharmacultrasonic examination of the kidneys with lasix is recommended. Color dopplerography of the urinary bladder with detection of urine ejection from ureters ostia is analogue of conventional invasive diagnostic method--chromocystoscopy. Magnetic-resonance urography is updated non-invasive, non-contrast and non-radiation method of diagnosis of urinary tract dilatation.