Pelvic splenosis presented as pelvis mass and gross hematuria

Pevlic splenosis is a very rare condition, particularly when the condition is diagnosed during a hematuria workup. Hematuria can be caused by genitourinary system infection, urolithiasis, neoplasm, or trauma. Hematuria can be seen in patients with symptoms or without symptoms. The standard work-up for hematuria includes a computed tomography (CT) scan which can sometimes have incident findings that can make diagnosis difficult. We report a rare case of a 44-year-old patient with painless gross hematuria and the CT scan revealed a pelvic mass that was eventually confirmed to be a pelvic splenosis by a nuclear liver–spleen sulfur colloid scan.