The pathology report of lung cancer is generally divided into three parts: the first part is the general information of the specimen; the second part is the description of what is seen by the naked eye and under the microscope; and the third part is the pathological diagnosis part. When you get a lung cancer pathology sheet, the most important and the first part you should read is the last part of pathology diagnosis, which gives the information whether the specimen tested has malignant tumor cells and what kind of tissue the malignant tumor cells are from. The other two sections are not important but should also be read, so that you can understand the origin of the specimen, what the specimen looks like to the naked eye, and what is seen microscopically will generally give several color maps showing the immunohistochemical staining .