case_images: PMC10830736_01
case_images: (A) ultrasound image showing multiple cystic structures of variable sizes in the right testis. Axial (B) and coronal (C) enhanced CT images of the abdomen show a round mass with the density of soft tissue located in the retroperitoneum of the left kidney.
case_images: fped-12-1339108-g001.jpg
case_images: PMC10830736_02_fped-12-1339108-g001.jpg
case_images: F1
case_images: Abdominal enhanced CT showed a round mass with the density of soft tissue (measuring 4.5 x 3.3 cm) located in the retroperitoneum of the left kidney, and multiple small lymph nodes were observed in the abdominal, retroperitoneal, pelvic and bilateral inguinal regions (Figures 1B,C).
case_images: PMC10830736_02
case_images: (A) ultrasound image showing multiple cystic structures of variable sizes in the right testis. Axial (B) and coronal (C) enhanced CT images of the abdomen show a round mass with the density of soft tissue located in the retroperitoneum of the left kidney.
case_images: fped-12-1339108-g001.jpg
case_images: PMC10830736_02_fped-12-1339108-g001.jpg
case_images: F1
case_images: Abdominal enhanced CT showed a round mass with the density of soft tissue (measuring 4.5 x 3.3 cm) located in the retroperitoneum of the left kidney, and multiple small lymph nodes were observed in the abdominal, retroperitoneal, pelvic and bilateral inguinal regions (Figures 1B,C).
case_images: (A) yolk sac tumor on the left side and (B) mature teratoma on the right side (HE x100). Immunohistochemical staining (x100) revealed that the tumor cells were positive for AFP (C) and CK (D).
case_images: fped-12-1339108-g002.jpg
case_images: PMC10830736_02_fped-12-1339108-g002.jpg
case_images: F2
case_images: The patient's final pathologic diagnosis was as follows (Figure 2).