Having hepatitis B as a result of stomach cancer surgery is also a condition that can occur when considering having both diseases. Gastric cancer and hepatitis B are two different diseases, which generally indicates that the patient has both gastric cancer as well as hepatitis B at the same time. Generally speaking, medical devices are sterilized and disinfected in a standardized way, and you will not get hepatitis B virus infection from gastric cancer surgery. Hepatitis B virus infection is relatively insidious, and most of the patients are chronic after infection, and most of them are carriers without any disease, so for those who have not checked Hepatitis B five items before, they may not be aware of their own Hepatitis B infection. And this situation can occur when hepatitis B is routinely detected during gastric cancer surgery. Finding out that you have hepatitis B requires checking the amount of replication of the hepatitis B virus as well as your liver function, and taking the next steps under the guidance of your doctor.