A case refers to an example of a certain disease. Specifically, it can be the case of a certain person or creature suffering from a certain disease, that is, a case of this disease. ^{one two}

Cases have important application value in the medical field. They are not only the data for determining diagnosis, treatment and implementation of preventive measures, but also the basis for medical staff to assess the level of disease diagnosis and treatment, and also the important reference data for diagnosis and treatment of patients when they become ill again. ^{five six}

In addition, cases are also valuable teaching materials. Through the writing and reading of medical records, the medical theory and practice learned can be closely combined, the knowledge learned can be consolidated, the vision broadened, and the logical thinking ability and rigorous medical style of medical staff and medical students can be cultivated. ^six

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