Evaluation and Management of Hematuria in Men

Introduction to Hematuria

Hematuria in men is most commonly caused by benign prostatic hyperplasia (BPH), urinary tract infections, and urolithiasis, but malignancy must be aggressively excluded—particularly in men over 35 years with gross hematuria, where cancer risk reaches 30-40% 1, 2

The American College of Radiology suggests that benign prostatic hyperplasia (BPH) is the most common benign urologic cause of hematuria specifically in men, particularly those over 50 years old 1, 2, 3
Urinary tract infection is a common cause of both microscopic and macroscopic hematuria, presenting with pyuria and bacteriuria 1, 2, 4
Urolithiasis, or kidney and ureteric stones, typically cause painful hematuria with flank pain 1, 2, 4

The American Urological Association indicates that bladder cancer is the most frequently diagnosed malignancy in hematuria cases 2, 4
Renal cell carcinoma is an upper tract malignancy that can cause hematuria 1, 2
Prostate cancer can produce lower urinary tract symptoms and hematuria 5, 6

Men with gross hematuria have a 30-40% risk of malignancy, regardless of other factors 1, 2
The American College of Radiology recommends that men with a smoking history of more than 30 pack-years are considered high risk 1, 2
Occupational exposure to chemicals or dyes increases the risk of bladder cancer 1, 2

The initial step in evaluating hematuria is to confirm true hematuria with microscopic urinalysis showing ≥3 RBCs per high-power field 2, 4
The American College of Radiology suggests that urine culture should be performed to confirm or exclude urinary tract infection (preferably before antibiotics) 1, 2
Recent vigorous exercise history and recent urologic instrumentation should be considered as potential benign causes of hematuria 1, 2

Glomerular indicators include dysmorphic RBCs >80%, RBC casts, significant proteinuria, and tea-colored urine 2, 3, 4
Non-glomerular indicators include normal RBCs >80% and absence of proteinuria or casts 2, 3

The American College of Radiology recommends that men with gross hematuria or high-risk microscopic hematuria should undergo urgent urology referral for cystoscopy and CT urography 1, 2
Men with intermediate-risk microscopic hematuria should undergo urology referral for cystoscopy and imaging 2
Low-risk microscopic hematuria with an identified benign cause may defer extensive imaging but should maintain surveillance 1, 2

The American College of Radiology suggests that gross hematuria carries a 30-40% malignancy risk and requires urgent evaluation regardless of hemoglobin levels 7
In patients with gross hematuria, the European Hematology Association recommends checking hemoglobin and hematocrit at presentation, then monitoring frequently (every 1-2 days initially) until bleeding stabilizes, as significant anemia can develop rapidly and hemoglobin/hematocrit is a more reliable indicator of ongoing blood loss than clinical assessment alone 8

Frequent H&H monitoring is often more reliable than radiological imaging for detecting significant ongoing blood loss, according to the European Hematology Association 8
The European Hematology Association recommends that patients with gross hematuria should not rely solely on visual assessment of urine color to gauge bleeding severity—H&H provides objective measurement of blood loss 8
In elderly patients with comorbidities, even modest drops in hemoglobin can have significant clinical impact requiring closer monitoring, as suggested by the European Hematology Association 8