Tortuous vascular shadow refers to the localized tortuous vascular shadow found by imaging, which is an abnormal phenomenon. It is mainly considered to be related to congenital malformation of blood vessels, inflammation and infection. Usually, tortuous vascular shadow is an abnormal phenomenon, which is mainly found through vascular ultrasound, four-dimensional ultrasound, digital subtraction angiography and other imaging examinations of tortuous blood vessels, similar to the phenomenon of curly hair. Usually tortuous vascular shadow is related to a variety of factors such as congenital malformation of blood vessels, inflammation and infection, tumor occupation, venous thrombosis, and vascular sclerosis. The reason why tumor occupation causes tortuous vascular shadow is mainly related to the compression of surrounding tissues and blood vessels caused by the tumor. Venous thrombosis and vascular sclerosis will lead to the increase of local vascular pressure, which will lead to the appearance of tortuous vascular shadow. It is recommended that people with tortuous vascular shadow should undergo further detailed examination, so that the disease can be clarified and then actively treated to promote the recovery of the body. It is also recommended that the patient undergoes regular medical checkups to monitor the recovery of the local blood vessels.