How is dx of gastric adenocarcinoma?

Upper GI endoscopy: Best method, allows for biopsy, definitive >95% sensitivity and specificity Upper GI series: With double contrast; 80–96% sensitivity, 90% specificity (operator dependent); excellent method in skilled hands. Abdominal CT: Good for detecting distant metastases; also used forpreop staging, but suboptimal. Endoscopic ultrasound: Good for detecting depth of invasion