1.Gastroscopy and biopsy, which is a qualitative examination of esophageal cancer cardia, and can visualize the shape of the lesion, whether the tumor has bleeding, erosion, and the length of the lesion, etc.
2.Upper gastrointestinal tract imaging can determine the specific location of the lesion, the general relationship with the surrounding tissues, the specific length, the type of cancer, and the probability of possible surgical resection.
3.Thoracic and abdominal CT can grasp whether the tumor has metastasis and the general condition of the thoracic and abdominal organs. It can exclude some of the basic medical disorders.
4.Blood, urine and stool routine, liver function, lipid profile, blood sugar, immunity, coagulation function and blood type.
5.Electrocardiogram and, if necessary, cardiac ultrasound. To grasp the overall situation of the patient, in order to make a deadline for surgical treatment.