Hematuria differential diagnosis

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Steven C. Campbell, M.D., Ph.D. Associate Editor(s)-in-Chief: Venkata Sivakrishna Kumar Pulivarthi M.B.B.S [1]

Overview

Gross hematuria(GH) must be distinguished from pigmenturia, which may be due to endogenous sources (e.g., bilirubin, myoglobin,and porphyrins), foods ingested (e.g., beets and rhubarb), drugs (e.g., phenazopyridine), and simple dehydration. This distinction can be made easily by urinalysis with microscopy. Notably, myoglobinuria and other factors can cause false-positive chemical tests for hemoglobin, so urine microscopy is required to confirm the diagnosis of hematuria. GH also must be distinguished from vaginal bleeding in women, which usually can be achieved by obtaining a careful menstrual history, collecting the specimen when the patient is not having menstrual or gynecologic bleeding, or, if necessary, obtaining a catheterized specimen. GH may also be detected by the presence of blood spotting on the undergarments of incontinent patients. After ruling out vaginal bleeding and mimics of hematuria, a urologic source must be suspected.

Differential Diagnosis

Hematuria should be differentiated from other disease which mimic hematuria especially hemoglobinuria and myoglobinuria which are dipstick positive but negative for microscopy.

Hematuria differential diagnosis

Differentiating the diseases that can cause hematuria:

Diseases			Type of hematuria	Clinical manifestations									Para-clinical findings									Gold standard	Additional findings
				Symptoms						Physical examination
													Lab Findings			Imaging			Histopathology
				Low back pain	Fever	Nausea/Vomiting	Urinary symptoms			Hypertension	Pitting edema	Other	CBC	Biomarkers	Urinalysis	Ultrasonography	CT scan	Other
							Dysuria	Frequency	Oliguria										Light microscopy	Electron microscopy	Immunoflourescence pattern
Hematuria	Glomerular diseases	IgA nephropathy (Berger nephropathy)	Microscopic		+	-	-	-	+	+	+	-	-	-
		Hereditary nephritis (Alport syndrome)	Microscopic	-	-	-	-	-	-	+	-	Cataract Hearing loss			Pyuria Red cell casts Cylindrical casts	-	-	Renal Biopsy Irregularly thin and attenuated GBM Splitting of GBM Scarring
		Poststreptococcal glomerulonephritis	Microscopic
		Mesangioproliferative glomerulonephritis	Microscopic
		Focal segmental glomerular sclerosis	Microscopic
		Rapidly progressive glomerulonephritis	Microscopic
		Lupus nephritis	Microscopic
		Thin basement membrane disease	Microscopic
		Fabry disease	Microscopic
	Tubulointerstitial diseases	Renal papillary necrosis	Gross
		Acute interstitial nephritis		+	+	+
		Analgesic
		Nephrolithiasis
		Reflux nephropathy (hydronephrosis)
	Malignancy	Renal cell carcinoma (RCC)
		Nephroblastoma
		Transitional cell carcinoma (TCC)
		Prostate cancer
	Familial diseases	Polycystic kidney disease
		Medullary sponge kidney
	Vascular diseases	Arteriovenous renal malformations
		Renal vein thrombosis
		Malignant hypertension
		Polyarteritis nodosa
		Wegner's granulomatosis polyangiitis
		Henoch-Schönlein purpura
	Lower urinary tract diseases	Benign prostatic hyperplasia
		Urolithiasis
		Interstitial cystitis
		Radiogenic cystitis
	Systemic diseases	Coagulopathy (hemophilia)
		Sickle cell anemia
		Abdominal aortic aneurysm
		Lymphomas
		Multiple myeloma
	Infectious diseases	Pyelonephritis
		Cystitis
		Prostatitis
		Urethritis
		Epididymitis
		Cytomegalovirus
		Infectious mononucleosis
		Condylomata acuminata
	Urogenital trauma	Inserted bladder or ureteral catheters
	Drugs	Anticoagulants
Dark urine	Hemoglobinuria	Autoimmune hemolytic anemia
		Microangiopathic hemolytic anemia
		Thrombotic thrombocytopenic purpura
		Paroxysmal nocturnal hemoglobinuria
		Paroxysmal cold hemoglobinuria
		Falciparum malaria
		Prosthetic heart valve
	Myoglobinuria	Crush injury
		Vigorous muscle exercise
		Hyperthermia (Heat stroke)
		Electric shock
		Prolonged seizure
		Polymyositis
		Trichinosis
		Haff disease
		Animal venom bite
	Chemicals	Phenazopyridine
		Beet (Beeturia)