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Early esophageal cancer has no symptoms and is difficult to distinguish from esophagitis, atypical epithelium and other diseases. Liver cancer and hepatitis Most patients with liver cancer have a history of hepatitis B, hepatitis B, or cirrhosis. If you spray a thin layer of Lugol's solution for mouthwash (concentrated sulfur solution containing anti-inflammatory agent) for mouthwash during gastroscopy, the normal esophagus will be dyed yellow. If it is cancer or abnormal epithelium, the yellow color will not appear, and then the stained part will be taken out. The tissue can easily identify whether it is esophageal cancer. However, cancer cannot be diagnosed with blood tests alone. It must be combined with ultrasound and other examinations to confirm the diagnosis. Because it is difficult to distinguish between the two diseases, you must go to the hospital for diagnosis when in doubt. < ="_"> < ="" =""> <>Go to the hospital for a proctoscopy< r="../." ="" ="" ="" />Because of the pain and shame, some People are reluctant to go. Generally speaking, for both diseases, gastroscopy can be used to examine the condition of the esophagus. <>It is difficult to distinguish non-early gastric cancer from gastric ulcer, gastritis, gastric erosion and other diseases. Patients who have been diagnosed with gastric ulcer, gastritis and those who have not responded to treatment should undergo examination as soon as possible. Some people have subjective symptoms but no abnormality is found in the fecal occult blood test. By the time they are diagnosed again, they have reached the advanced stage of cancer. Because the part where gastritis occurs may become cancerous, it may appear to be a gastric ulcer on the surface, but there may be cancer cells hidden in the depression of the stomach. If it is found to be gastric cancer, a barium meal imaging is already in the advanced stage. At the same time, a blood test is also required to see if a substance called alpha-fetoprotein (alpha-fetoprotein) can be found only when cancer occurs. Another method is line photography called enema examination. Barium is injected from the anus to fill the intestines and then line photography is performed. <>Many people mistakenly think they have hemorrhoids when they see blood in their stools. Therefore, the above-mentioned patients should undergo regular ultrasound examinations and examinations for early detection