case_images: PMC9666769_01
case_images: Imaging presentation and gross specimen of a patient with primary eRMS. (A) CT plain scan showed the enlarged and inhomogeneous density of the right testicle; (B) (arterial phase) and (C) (venous phase): CT enhanced scan showed inhomogeneous enhancement of the occupying lesion; (D) General observation.
case_images: fonc-12-1027504-g001.jpg
case_images: PMC9666769_01_fonc-12-1027504-g001.jpg
case_images: f1
case_images: An enhanced CT scan observed a tumor in the dorsal lower part of the testicle (3.3x3.0 cm), with heterogeneous enhancement found ( Figure 1 ). The pathological results showed that a gray solid tumor was seen in the right epididymal section ( Figure 1D ), and tumor cells infiltrated among epididymis ( Figure 2A ), the tumor was completely removed and the margin of vas deferens and spermatic cord were negative.
case_images: Microscopic pathology of primary eRMS. (A) Heterotypic cells were seen between the tissues of the right epididymis; (B) tumor size was about 3.5x3.2x2.5 cm; (C) Desmin (+); (D) Myogenin (+).
case_images: fonc-12-1027504-g002.jpg
case_images: PMC9666769_01_fonc-12-1027504-g002.jpg
case_images: f2
case_images: The pathological results showed that a gray solid tumor was seen in the right epididymal section ( Figure 1D ), and tumor cells infiltrated among epididymis ( Figure 2A ), the tumor was completely removed and the margin of vas deferens and spermatic cord were negative. The final immunohistochemical staining was as follows: Vimentin, Desmin Myogenin, MyoD1, SMA, CD56, ALK, S-100 polyclonal (+), Fli-1 (weak +), CD99 (partial cell +), Ki-67 (40%-60% +), WT-1 (-), CK wide (-), EMA (-) ( Figure 2 ); FOX gene translocation (+).