Gastric adenocarcinoma with features of endodermal sinus tumor

Extragonadal 细菌房间肿瘤是稀罕的。为 EGGCT 的最普通的地点在象纵隔，制动火箭腹膜和松果状的腺那样的中线地点。这些肿瘤很少在胃介绍。我们这里描述一个中年的人与胃的癌症的典型症状介绍了的一个盒子。在以后广泛的工作在上面病人与胃的癌症被诊断。由于 alpha-fetoprotein 的很高的血层次，然而，标本被去请特殊组织化学的染色，它证明肿瘤有腺癌和内胚层湾穴肿瘤的特征。这是有很差的预后的一个很好攻击的肿瘤。

Extragonadal germ cell tumors are rare. The most common sites for EGGCTs are in midline locations such as the mediastinum, retroperitoneum and pineal gland. These tumors rarely present in the stomach. We describe here a case where a middle aged man presented with typical symptoms of gastric cancer. After extensive workup, which included blood work, CT abdomen scan, upper endoscopy, and endoscopic ultrasound, the patient was diagnosed with gastric cancer. However, due to very high blood levels of alpha-fetoprotein, the specimen was sent for special histochemical staining, which demonstrated that the tumor had features of both adenocarcinoma and endodermal sinus tumor. This is a very aggressive tumor with a very poor prognosis.