胃癌有哪些检查手段？

印度代购温馨提示，1.X线钡餐检查

　　数字化X线胃肠造影技术的应用，目前仍为诊断胃癌的常用办法。常采用气钡双重造影，经过黏膜相和充盈相的察看作出诊断。早期胃癌的主要改动为黏膜相异常，停顿期胃癌的形态与胃癌大致分型根本分歧。

Digital X - ray gastrointestinal angiography is still a common method for the diagnosis of gastric cancer. The diagnosis is usually made by double radiography of air and barium, through the examination of the mucosal phase and filling phase. The main changes in early gastric cancer were abnormal mucosal phase, and the morphology of gastric cancer at standstill was fundamentally different from the roughly classification of gastric cancer.

　印度代购温馨提示，2.纤维胃镜检查

　　直接察看胃黏膜病变的部位和范围，并可获取病变组织作病理学检查，是诊断胃癌的最有效办法。采用带超声探头的纤维胃镜，对病变区域停止超声探测成像，有助于理解肿瘤浸润深度以及四周脏器和淋巴结有无进犯和转移。

　　印度代购温馨提示，3.腹部超声

　　在胃癌诊断中，腹部超声主要用于察看胃的临近脏器(特别是肝、胰)受浸润及淋巴结转移的状况。

　　印度代购温馨提示，4.螺旋CT与正电子发射成像检查

　　多排螺旋CT扫描分离三维平面重建和模仿内腔镜技术，是一种新型无创检查手腕，有助于胃癌的诊断和术前临床分期。应用胃癌组织关于氟和脱氧-D-葡萄糖(FDG)的亲和性，采用正电子发射成像技术(PET)能够判别淋巴结与远处转移病灶状况，精确性较高。5.肿瘤标志物血清CEA、CA50、CA72-4、CA19-9等肿瘤相关抗原可升高，但敏理性和特异性均不高，有助于判别肿瘤的预后及化疗的疗效。

Multi-slice spiral CT scanning separation 3d plane reconstruction and imitative endoscopy is a new non-invasive examination of the wrist, which contributes to the diagnosis and preoperative clinical staging of gastric cancer. Using the affinity of fluorine and deoxyd-glucose (FDG) in gastric cancer tissue, positron emission imaging (PET) can be used to distinguish lymph nodes from distant metastatic lesions with high accuracy. 5. Serum CEA, CA50, CA72-4, CA19-9 and other tumor markers can be elevated, but sensitivity and specificity are not high, which is helpful to distinguish the prognosis of tumor and the efficacy of chemotherapy.