Gastric cancer is a common type of cancer, which is rarely detected in early stage due to unclear elinieal symptoms. Patients often go to hospital because of complications in which pyloric stenosis is the most common one. Objectives: To describe the clinical and subclinical characteristics of pyloric stenosis among patients with gastric carcinoma at Viet Duc Hospital. Study subjects and methodology: A retrospective study of 75 patients with pyloric stenosis due togastric carcinoma treated at the Viet Duc Hospital from 1st January 2012 to 31th December 2015. Results: eplgasfric painwas the most common hinctional abnormalibes In the study (84%). The rate of anemia was 80%, electrolyte disturbances 46.7%, kidney failure 50.7%. All patients in the study were received endoscopy, and ulcer accounted for 64.0%, pyloric lesions 85.3%, biopsy showed 77.3% of cancer eases, 8% was not able to found results. The feature of thicken gasdc wall is the most common in both ultrasound and computerized tomography. Conclusion: The physical symptoms of participants were limited, most eases have fully changed. The results showed that endoscopic biopsy is still a viable method to diagnose the disease. In addition to ultrasound dlagnoshc value, CT scans also help assessmetastases, invasive and co-morbld conditions.Mô tả đặc điểm lâm sàng và cận lâm sàng trên 75 bệnh nhân hẹp môn vị do ung thư biểu mô dạ dày được điều trị phẫu thuật tại bệnh viện Hữu nghị Việt Đức từ 01/2012 đến 12/2015. Đau bụng là triệu chứng cơ năng thường gặp nhất (chiếm 84%). Tỷ lệ thiếu máu ở người bệnh là 80%, rối loạn điện giải 46,7%, suy thận 50.7%. Nội soi thấy có 64,0% có tổn thương loét dạ dày, 77,3% thấy có tế bào ung thư. Hình ảnh dày thành dạ dày thường gặp nhất ở cả siêu âm và chụp cắt lớp vi tính.