9 year old's severe bladder infection

[elizs_aunt]

My 9 year old neice just had exploratory surgery over the weekend to see why she had excessive UTIs.  The Doctor said the kidneys and Uretra looked good, however the bladder had "hundreds of tiny cysts of infection".  They are treating her with very strong antibiotics for 3 months (rechecking each month).  What does she have?  I have googled the internet trying to find information and really have not been that successful.

[Dr_Veena]

Hi,
    I, think your niece is suffering from cystitis cystica. Cystitis cystica is also present in 60% of normal bladders. It should be distinguished from cystitis follicularis, a non-cancerous response to chronic bacterial infection. It is associated with chronic urothelial irritation. It usually occurs in the elderly or occasionally in children.

On cystoscopy, cystitis cystica nodules are usually found located on the trigone and bladder neck region. Cystoscopic biopsy is mandatory, as the diagnosis is histological.
In the absence of obvious lesion, treatment is usually medical, based on the eradication of the irritative factors.
Surgery is required in case of complications of the disease like recurrent haematuria or features associated with bladder outlet obstruction.

Recurrent UTI's can occur in interstitial cystitis but on cystoscopy there are no cysts in the bladder. Check the histology report of the sample taken during surgery and follow the advise of your doctor.
All the best.