Focal Calcification in the Urinary Bladder

Etiologies and Risk Factors

The most common cause of bladder wall calcification worldwide is urinary tract infections, particularly schistosomiasis, which produces mural calcification with a typical thin arcuate pattern and may be associated with calcification in other portions of the urinary tract, especially in endemic regions such as Africa and the Middle East 1
Tuberculosis can cause focal calcification in the bladder wall, usually associated with other signs of genitourinary tuberculosis, although it is less common than schistosomiasis as a cause of bladder calcification 1
Urease-producing organisms, such as Proteus and Klebsiella, can lead to struvite stone formation, and there is a positive association between a history of urinary calculi and bladder cancer 2
Pelvic radiation can lead to dystrophic calcification in the bladder wall as a late complication 1
Cyclophosphamide has a direct toxic effect on the bladder mucosa, which can lead to hemorrhagic cystitis and subsequent calcification 1

The American College of Radiology recommends CT urography as the imaging procedure of choice for evaluating hematuria and suspected bladder abnormalities, considering patient risk factors such as history of recurrent UTIs, travel to endemic areas, previous pelvic radiation, or cyclophosphamide treatment 3

Complete removal of stones is important to eradicate causative organisms, relieve obstruction, and prevent further stone growth, according to the American Urological Association 4
Patients with a history of spinal cord injury and indwelling catheters have a significant association between bladder calculi and the development of malignant bladder tumors, highlighting the need for careful management and follow-up 4