Unilateral localized cystic kidney: Question

Excerpt

A previously healthy 14-year-old boy came to our clinic for the evaluation of recurrent, painless gross hematuria of 2-weeks duration. The patient denied abdominal or back pain, had no dysuria, fatigue, or fever, and a complete review of systems was unremarkable except for the bright red urine. There was no antecedent history of trauma, sore throat, sinusitis, no symptoms or evidence of other infections, and no history of bleeding diathesis. The patient denied ever having been sexually active. His past medical history was unremarkable with no history of urinary tract infections and no previous episodes of hematuria. He had been a full-term normal delivery and his mother recalled there being no issues with his antenatal ultrasound. The patient came to the clinic with both parents who denied a history of hematuria or cystic kidney disease in any members of the family. The patient’s father had been recently diagnosed with hypertension and was on medication. …