case_images: PMC9806491_01
case_images: (a) CT scan. The 17 x 12 mm solid nodular iso-dense mass in the middle calyx
  of the left kidney (shown by an arrow), (b) CT scan, coronal cut (17 x 12 mm
  mass).
case_images: 10.1177_2050313X221147506-fig1.jpg
case_images: PMC9806491_01_10.1177_2050313X221147506-fig1.jpg
case_images: fig1-2050313X221147506
case_images: CT scan showed a solid nodular iso-dense mass in the middle calyx of the left kidney with the interpretation of highly suspicious transitional cell carcinoma (TCC; Figure 1a and b).
case_images: MRI image of the mass (12 x 11 x 13 mm); the dimensions are reported in the
  MRI report.
case_images: 10.1177_2050313X221147506-fig2.jpg
case_images: PMC9806491_01_10.1177_2050313X221147506-fig2.jpg
case_images: fig2-2050313X221147506
case_images: Squamous Cell Carcinoma (SCC) or parapelvic cyst (Figure 2). Sonography showed a hypodense mass in the middle of the left kidney being either TCC or reninoma (Figure 3).
case_images: Sonography showing the 18 x 13 mm hypoechoic mass.
case_images: 10.1177_2050313X221147506-fig3.jpg
case_images: PMC9806491_01_10.1177_2050313X221147506-fig3.jpg
case_images: fig3-2050313X221147506
case_images: Squamous Cell Carcinoma (SCC) or parapelvic cyst (Figure 2). Sonography showed a hypodense mass in the middle of the left kidney being either TCC or reninoma (Figure 3).
case_images: One of the multiple masses seen on ureteroscopy.
case_images: 10.1177_2050313X221147506-fig4.jpg
case_images: PMC9806491_01_10.1177_2050313X221147506-fig4.jpg
case_images: fig4-2050313X221147506
case_images: Ureteroscopy showed multiple masses with small blood clots in the middle calyx of the left kidney (Figure 4) https://www.aparat.com/v/0LS9l.
case_images: Taking a biopsy from one of the masses.
case_images: 10.1177_2050313X221147506-fig5.jpg
case_images: PMC9806491_01_10.1177_2050313X221147506-fig5.jpg
case_images: fig5-2050313X221147506
case_images: Biopsies were taken from the tumor-like mass (Figure 5); however, the pathologist could not find any tissue so instead reported the cytology, which was negative.