Abstract
Asymptomatic microhematuria (AMH) is defined as 3 or more red blood cells per field in urinary sediment microscopy in the absence of an obvious cause. The most common causes of AMH in adults are urinary tract infection, benign prostatic hyperplasia and kidney stones, however the possibility of malignancy should always be considered. For initial assessment, rule out benign causes and microscopy urinalysis is essential. The use of imaging studies for diagnosis is necessary, being the CT Urography the most recommended and for patients with a risk factor for malignancy, cystoscopy should always be performed. The follow-up varies according to whether the AMH is persistent or not and the risk factors for malignancy.