RESUMEN
Malacoplakia is a rare inflammatory condition most often affecting the genitourinary system. We report the case of a 24-year-old man who presented with gross hematuria; nocturia; frequency; dysuria and considerable weight loss during the preceding three months. Digital rectal examination showed a solid pelvic mass. Ultrasonography and computed tomography showed calyceal dilatation on the right side and a solid bladder mass 10 cm in diameter suspicious of bladder cancer. Transurethral resection of the tumor was incomplete; due to the large volume of the bladder mass. Histological examination of the resected specimen revealed malacoplakia of the bladder. The patient was treated with fluoroquinolone and vitamin C. Follow-up at 3 months showed marked regression of the bladder mass and complete resolution of the calyceal dilatation