Hematuria in Children : Causes / Differential Mnemonic

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Anatomy (cysts, etc)
Bladder (cystitis)
Cancer (Wilm's tumour)
Drug related (cyclophosphamide) 
Exercise induced
Factitious (Munchausen by proxy) 
Glomerulonephritis
Haematology (bleeding disorder, sickle cell) 
Infection (UTI)
In Jury (trauma)
Kidney stones (hypercalciuria)