All the following are causes of hematuria in a child except:: (A) PCKD, (B) Porphyria, (C) Renal vein thrombosis, (D) Idiopathic hypercalciuria
Answer is B. Cause of Persistent microscopic hematuria include idiopathic hypercalciuria. Porphyria does not produce hematuria. Ref: Nelson, 18th Edition, Page 2169