• Microhematuria is the occurrence of erythrocytes in the urine and is graded according to the number of cells seen in the average high-power field when the sediment from a centrifuged specimen is examined microscopically. In 500 otherwise asymptomatic patients who had this condition, the highest incidence was in the 50-59 year age group.
The two most frequent lesions discovered when these patients underwent rigorous urologic examination were asymptomatic prostatic hyperplasia and urethritis. In some instances the lesions found were extensive and of grave prognostic import, while in 44% of the patients the urologic investigation yielded normal findings.
The study did not yield any criteria that would enable the urologist to decide which patients, in a group manifesting asymptomatic microhematuria, could safely be spared the hardship of an extensive investigation. In patients over 50 years of age such investigation appears advisable. In patients under 50 a compromise plan would consist of taking a plain roentgenogram of the urinary tract and performing a cystosccpy.
Greene LF, O'Shaughnessy EJ, Hendricks ED. STUDY OF FIVE HUNDRED PATIENTS WITH ASYMPTOMATIC MICROHEMATURIA. JAMA. 1956;161(7):610–613. doi:10.1001/jama.1956.02970070042011
Customize your JAMA Network experience by selecting one or more topics from the list below.
Create a personal account or sign in to: