dissection is based on multiple factors, such as the stenosis of true lumen, dissection length, collateral conditions, intestinal spasm, dissection itself, or an inflammatory response that stimulates the visceral nerve plexus. 2 The symptom severity also relates to the patient's sensitivity and tolerance to pain. Besides, the symptom is one kind of self-perception that is difficult to evaluate and compare among different individuals. It is therefore somewhat casual to choose management mainly dependent on symptom severity.More scientific and quantitative methods, such as imaging classification schemes, [3][4][5] are needed to make the treatment plan. However, there is no consensus on which classification scheme should be used. We reviewed the published Chinese-language literature, selected cases for which computed tomography images were provided and available for classification, and tried to find the relationship between the classifications and treatment results. Because of the disparity of reports, the number of available cases is small. We can only make a certain speculation, which remains to be further evaluated.