PMC9768293_01
Ultrasound images of the left testicle. A (longitudinal) and B (axial) views demonstrating an intra-testicular, homogenous, hypoechogenic lesion. C axial colour Doppler view demonstrating internal vascularity of the lesion. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
gr1.jpg
PMC9768293_01_gr1.jpg
fig1
Scrotal ultrasound demonstrated a 10.8 x 10.2 x 10mm homogenous, echogenic, hypervascular intratesticular mass in the left testis (Fig. 1).
Micrographs: A) low power view (x40 magnification) of tumour (bottom left) with broad pushing border and background testis parenchyma (top right), H&E stain; B) high power view (x400 magnification) of tumour, H&E stain; C) medium power view (x200 magnification) showing moderately strong diffuse positivity for CAIX, IHC stain; D) medium power view showing weak focal positivity for PAx8, IHC stain; E) high power view showing negativity for OCT4, IHC stain.
gr2.jpg
PMC9768293_01_gr2.jpg
fig2
Immunohistochemistry demonstrated moderately strong diffuse positivity for CAIX, weak focal positivity for PAX8 and negativity for OCT4 (Fig. 2).