Multifocal Nephrogenic Adenoma of the Bladder in a Pediatric Patient

Abstract

Neoplasms of the urinary bladder in children are fortunately rare. Rhabdomyosarcomas are the most common, which appear as a bladder mass on a sonogram, although in boys, they often arise in the prostate. 1 Nonetheless, a variety of other tumors and tumorlike conditions occur and can be difficult to diagnose without resection and histologic examination. 2-5 Neoplasms run the gamut from benign to malignant and include a variety of benign cellular proliferations and inflammatory masses. Carcinoma of the bladder is extremely rare in children. The most common carcinoma to involve the bladder is transitional cell carcinoma. 4 In contrast to adults, most pediatric bladder carcinomas are low grade, are superficial, and have a good prognosis after transurethral resection. 3,4 Squamous cell and more aggressive carcinomas, however, have been reported. 5 In this report, we share the sonographic findings in a case of multifocal nephrogenic adenoma in the bladder of a pediatric patient. We found only 2 other reports of the sonographic findings in this unusual condition. 6,7 In a third report, focused on a treatment option, a sonogram was depicted. 8 .