Although germ cell tumors are the most common malignancy in young men, extragonadal germ cell tumors are rare. Gastric metastasis presenting initially as upper gastrointestinal hemorrhage is also exceedingly rare. A 27-year-old man presented at our hospital with tarry stool. Gastric fiberscopy images revealed a bleeding gastric polypoid lesion in the anterior wall of the gastric body, from which a biopsy specimen was obtained. Histopathological analysis of the biopsy showed syncytiotrophoblast-like cells with multiple, large nuclei, consistent with choriocarcinoma. Based on these results, our diagnosis was extragonadal retroperitoneal germ cell tumor with gastric metastasis. © 2009 The Japanese Society of Internal Medicine.
CITATION STYLE
Shibuya, T., Osada, T., Kodani, T., Hojo, M., Saito, H., Ueyama, H., … Watanabe, S. (2009). Gastrointestinal hemorrhage as the first manifestation of metastatic extragonadal choriocarcinoma. Internal Medicine, 48(7), 551–554. https://doi.org/10.2169/internalmedicine.48.1867
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