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Benign tumours of the urinary bladder are very rare in children. A new case of cavernous haemangioma of the bladder is reported in a five year old boy presenting with macroscopic haematuria. This tumour is a hamartoma which usually presents with painless haematuria. In about 30% of cases, the bladder tumour is associated with angiomatous lesions in other parts of the body. The diagnosis may be suspected on intravenous urography or ultrasound examination, but it is generally made at cystoscopy. Biopsy and transurethral resection must be avoided because of the risks of haemorrhage. Partial cystectomy appears to be the most effective method of treatment.
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