In the evaluation of microscopic hematuria, which feature according to AUA guidelines most strongly warrants immediate cystoscopy rather than deferral for repeat urinalysis?

• A Patient age under 35 years with >3 RBC/HPF on a single urinalysis
• B Microscopic hematuria with concurrent UTI requiring antibiotic treatment
• C Hematuria in a patient with no smoking history and no occupational chemical exposure
• D Three or more RBC/HPF confirmed on repeat urinalysis in a patient over 35 years ✓

Explanation

AUA 2020 guidelines recommend cystoscopy for all patients over 35 years with confirmed microscopic hematuria (≥3 RBC/HPF on a single properly collected specimen, or after resolution of an attributable cause on repeat UA), given the substantially increased risk of urothelial malignancy in this age group. In patients under 35, low-risk hematuria may be managed with surveillance. UTI-associated hematuria should be rechecked 6 weeks after antibiotic treatment before cystoscopy. Smoking history increases urothelial cancer risk but is not itself the threshold criterion.

Reference: Bailey & Love's Short Practice of Surgery, 27th ed.

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Written and medically reviewed by the StethoPrep medical team.