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Gastric cancer represents a major health burden worldwide.The cause of gastric cancer is multifactorial, although infection with Helicobacter pylori is considered to be the primary cause. The early stages of gastric cancer are usually asymptomatic or associated with nonspecific symptoms, such as dyspepsia. Advanced stages and ulcerated tumors may be associated with signs of upper digestive bleeding and hemorrhagic shock. Upper gastrointestinal endoscopy is the first preferred diagnostic procedure. The only chance for cure of gastric cancer is surgical removal of the tumor and the adjacent lymph nodes. Case report: 67 year old male presented with melena and haematemesis. On examination pale, covered with cold sweat, adynamic, hypotensive TA = 60/30 mmHg in hemorrhagic shock. After initial stabilization esophagogastroduodenoscopy was performed and showed irregular and longitudinal ulceration with elevated and subminated edges, necrotic bottom of the lesion with a fixed coagulum. Gastric cancer was suspected and the patient was transferred to Digestive Surgery where a total gastrectomy was performed. The pathohistological finding is in addition to gastric adenocarcinoma.Conclusion: Epidemiologic studies suggest that eating more fresh fruit and vegetables, eating less salted food and eradicating Helicobacter pylori can decrease the risk of gastric adenocarcinoma. The best way for prevention is to carry out an effective screening program in high-risk groups and in high-incidence areas, so that early discovery, early diagnosis and early treatment can be achieved.