Extragonadal endodermal sinus tumor (yolk sac tumor) of the pelvis

Abstract

A case of endodermal sinus tumor of extragenital origin in a 18‐month‐old boy is reported, the second case in the literature. Treatment and clinical course, in addition to histologic aspects of this neoplasm, are discussed. The pertinent literature has been reviewed.

Yolk sac tumor of the stomach with an adenocarcinomatous component: A case report with immunohistochemical analysis

“…Yolk sac tumors are germ cell tumors that predominantly arise in the testes or ovaries. They also occur in extragonadal regions including the mediastinum, 1 retroperitoneum, 2 sacrococcygeal region 3 and pineal gland. 4 Yolk sac tumors, however, rarely occur in the stomach and only three cases have been described in the English literature.…”

Isolated Orbital Endodermal Sinus Tumor

“…9 Most patients present in their second and third decades of life, although there have been case reports of malignant germcell tumors occurring in infancy and in postmenopausal women. [1][2][3] These tumors appear to arise from germ cells misplaced during embryogenesis. 10,11 During the fourth through sixth weeks of development, the germ cells migrate through the midline dorsal mesentery, proceeding to the developing gonadal ridge.…”