Pathology is needed when there are abnormal findings after gastroscopy, and whether they are serious or not depends on the specific situation. Gastroscopy is generally used to diagnose diseases of the duodenum, stomach, esophagus and other parts of the stomach, and can visualize the mucous membrane inside the stomach, which is safer and more reliable for diagnosis. If there are abnormal findings after gastroscopy, such as atrophic gastritis, ulcer or tumor lesions, pathology is needed to clarify the benign or malignant nature of the lesions as well as the severity of the lesions. Pathology is usually not needed if the findings are superficial and there are no other changes. Pathology means sending the lesion to the pathology department for cytologic microscopic examination to determine whether there are any cellular changes in the disease. If the pathology results show that the lesion is benign and there are no secondary changes it is not too serious. If the pathology shows malignant lesions and cancerous lesions, it is a more serious case. If there are any abnormal findings after gastroscopy, it is recommended to consult a doctor for clarification.