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Tina was a 12-year-old girl referred for assessment of persistent microhaematuria. Tina was well all along without significant illness. She went for an insurance check-up, and a urinalysis by haemastix showed 2+. Urine microscopy showed RBC 11 cells/μL, and 80% were dysmorphic RBCs. Tina had no gross haematuria, loin pain or renal stones. There were no symptoms to suggest a urinary tract infection. Physical examination showed a normal-sized girl with body height and weight at the 50th percentile. Her blood pressure was 110/66 mmHg. There were no dysmorphic facial features, and systems reviews were normal. Urine examination showed persistent microhaematuria; the urine protein-creatinine ratio was <0.2 mg/mg. If this is not simple microhaematuria, what might be the underlying cause?

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The Cyst Is Not the Culprit

  • 章节

  • 发表日期：

    2026年

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  • Winnie Kwai Yu Chan

摘要

Tina was a 12-year-old girl referred for assessment of persistent microhaematuria. Tina was well all along without significant illness. She went for an insurance check-up, and a urinalysis by haemastix showed 2+. Urine microscopy showed RBC 11 cells/μL, and 80% were dysmorphic RBCs. Tina had no gross haematuria, loin pain or renal stones. There were no symptoms to suggest a urinary tract infection. Physical examination showed a normal-sized girl with body height and weight at the 50th percentile. Her blood pressure was 110/66 mmHg. There were no dysmorphic facial features, and systems reviews were normal. Urine examination showed persistent microhaematuria; the urine protein-creatinine ratio was <0.2 mg/mg. If this is not simple microhaematuria, what might be the underlying cause?