Review the major urinary urgencies with emphasis on inflammatory conditions, infectious, vascular, traumatic and postoperative lesions. We will review some special features of urological emergencies in pediatric patients and pregnant women.

Urinary diseases are very common in emergency departments, but can mimic other diseases (appendicitis, diverticulitis, cholecystitis). The radiologists use imaging techniques to enable screening of urinary origin. Renal ultrasound is the test of choice to exclude urinary tract obstruction and appropriate in patients for whom exposure to radiation or contrast is undesirable (renal insufficiency, children, pregnant women) We summarize the use of radiologic imaging in urinary tract infections, especially in complicated cases with emphysematous pyelonephritis orrenal abscess. In ureteral colic, the diagnostic signs are discussed...

1. INFECTIOUS DISEASE Urinary tract infections are the most common urologic diseases. In the United States of America, involving seven million doctor visits and one million visits to emergency departments. It is the main differential diagnosis on ureteral colic. 1.1. Acute pyelonephritis (APN) In adult patients, the diagnosis was based on clinical and laboratory data.Generally, it is not necessary to perform any imaging in the early diagnosis of acute pyelonephritis. Imaging tests are reserved for patients: 1.Unresponsive to treatment within 72 hours. 2.Patients as diabetics,...

CT is the modality of choice in complicated urinary tract infections, in order to prevent kidney failure and septic shock. In the renoureteral colic, abdominal radiography and the ultrasound remain the initial diagnostic techniques, with a relentless progression of abdominal CT without contrast. It is necessary to introduce low-dose protocols in abdominal CT in urinary studies requiring several acquisitions (active bleeding, trauma, complications)

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ML. Parra Gordo, MD Department of Radiology Hospital Universitario La Princesa Universidad Autónoma de Madrid Diego de León, 62 28006 Madrid (Spain)