case_images: PMC535804_01
case_images: CT shows a retroperitoneal bulky mass. (B) The clinical course from the treatment of EGGCT to that of seminoma.
case_images: 1471-2490-4-13-1.jpg
case_images: PMC535804_01_1471-2490-4-13-1.jpg
case_images: F1
case_images: CT showed a retroperitoneal tumor (Figure 1), and a transabdominal needle biopsy was carried out. No recurrence has been seen since the surgery (Figure 1B).
case_images: Photomicrograph of extragonadal non-seminomatous germ cell tumor with a focus of yolk sac tumor. A: H&E section shows characteristic structures suggestive of Schiller-Duval bodies (x200). B: Alpha-fetoprotein immunohistochemical stain is focally positive at the above area (x400).
case_images: 1471-2490-4-13-2.jpg
case_images: PMC535804_01_1471-2490-4-13-2.jpg
case_images: F2
case_images: Microscopically, the tumor was composed of a yolk sac tumor (Figure 2A,2B).
case_images: Photomicrograph of classic seminoma of the testis. A: H&E section shows compact nests of large tumor cells are separated by thin fibrous septa infiltrated by lymphocytes. B: Intratubular germ cell neoplasia in H&E section (x100). A row of atypical germ cells with clear cytoplasm is seen against a thickened basement membrane. No spermatogenesis is occurring in this tubule (x200).
case_images: 1471-2490-4-13-3.jpg
case_images: PMC535804_01_1471-2490-4-13-3.jpg
case_images: F3
case_images: Pathology showed the resected tumor was a seminoma with CIS (Figure 3A,3B).