case_images: PMC11809120_01
case_images: Abdominal CT scan at admission showing well-defined left cystic renal mass (13 cm) consistent with a cystic nephroma, associated with mild hydronephrosis and renal parenchymal atrophy
case_images: cureus-0017-00000077272-i01.jpg
case_images: PMC11809120_01_cureus-0017-00000077272-i01.jpg
case_images: FIG1
case_images: Control abdominal CT scan showing slight posterior left peri-renal densification, adjacent to the drain, with a slight reduction compared to the previous examination (measuring 47 x 26 mm).
case_images: cureus-0017-00000077272-i02.jpg
case_images: PMC11809120_01_cureus-0017-00000077272-i02.jpg
case_images: FIG2
case_images: TB was excluded. The patient's condition improved, and after two weeks, a follow-up abdominal CT scan showed a reduction in the cystic mass (4 cm) (Figure 2).