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A 42-year-old woman visited the nephrology clinic for an evaluation of chronic microscopic hematuria.
Microscopic hematuria had been detected 14 years earlier during an episode of cystitis. She subsequently had several episodes of cystitis each year, but the hematuria persisted after treatment and resolution of the infections; usually there were 10 to 20 red cells per high-power field on examination of the urine, but occasionally more than 100, with findings of trace to 1+ proteinuria. An intravenous pyelogram obtained at the time of the initial diagnosis of hematuria was said to have shown a urethral stricture. Ten years before the
Differential Diagnosis
Nonglomerular Causes of Microscopic Hematuria
Glomerular Causes of Microscopic Hematuria
IgA Nephropathy
Alport's Syndrome
Thin Basement Membrane Nephropathy
Differential Diagnosis of Alport's Syndrome and Thin Basement Membrane Nephropathy
Role of Renal Biopsy
Dr. David J.R. Steele's Diagnosis
Pathological Discussion
Anatomical Diagnosis
Source Information
From the Renal Unit, Department of Medicine (D.J.R.S.), and the Department of Pathology (P.J.M.), Massachusetts General Hospital; and the Departments of Medicine (D.J.R.S.) and Pathology (P.J.M.), Harvard Medical School.
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