case_images: PMC10854453_01
case_images: CT scan of abdomen and pelvis (coronal view). Moderate bilateral hydroureteronephrosis. Incidental finding of the left renal cyst within the lower pole (red arrow). Marked heterogeneity within the urinary bladder likely represents hemorrhage (yellow arrow)
case_images: cureus-0016-00000052018-i01.jpg
case_images: PMC10854453_01_cureus-0016-00000052018-i01.jpg
case_images: FIG1
case_images: A non-contrast computed tomography (CT) of the abdomen and pelvis was ordered to rule out renal calculi (Figure 1).
case_images: Poorly circumscribed lesion with marked cytologic atypia and epithelioid cells with prominent large, vesicular nuclei. Finely granular pigment noted throughout (H&E X10)
case_images: cureus-0016-00000052018-i02.jpg
case_images: PMC10854453_01_cureus-0016-00000052018-i02.jpg
case_images: FIG2
case_images: An excisional biopsy was ordered and performed at three locations: urethral meatus (4.7 cm), mid-urethra (4.1 cm), and urethral tissue (4.3 cm) (Figure 2).
case_images: MART-1 stained cells (H&E X10)
case_images: cureus-0016-00000052018-i03.jpg
case_images: PMC10854453_01_cureus-0016-00000052018-i03.jpg
case_images: FIG3
case_images: All three biopsies returned immunoreactive with antibodies to MART-1 only and negative to vimentin and S100 (Figure 3).