The BURNED WOOD symptom (a symptom of burnt ends of the branches of the renal arteries) is a type of arteriogram expressed by spasm of large arterial branches at the site of entry into the interlobar septum and lateral parts of the kidney or parallel atrophy as a result of arterial stenosis or obliterating lesions of the renal arteries. At the same time, the changes revealed during arterial examination do not always indicate a specific type of target organ damage. For example, nodular arterial thickenings may be radiologically mistaken for aneurysms (as localized increases in the caliber of the arterial tube).
**Symptom of burnt wood** is a rare but very characteristic x-ray finding in the form of “flames” at the level of the renal arteries. Most often, the symptom occurs with atherosclerosis of the renal arteries, less often with syphilis, sarcoidosis or fibro-Scandinavian diabetes. However, there are cases of the so-called burnt forest syndrome without thickening of the walls of the renal arteries in Wilson's disease, hereditary spherocytosis, polyhemoglobinopathies, and arteritis. There are many additional factors that influence changes in the structure of the renal vessels. It is often seen with changes in them and their branches. Many people have a question about this: is it possible to suspect any pathology using this study? With kidney cancer, pathological elongation of vessels appears with the development of aneurysmal expansion and their transformation into a tortuous stream that has no anatomical connection with the tumor capsule. The essence of the complaint is the appearance of pain in the lumbar region, caused by obstruction of the renal artery lumen by a tumor. Normally, the excretion of blood in the urine depends on the work of nephrons, the number of which is calculated by multiplying the cross-sectional area of the kidney tissue by the thickness of the kidney. Although radiographic results are calculated to the nearest centimeter, this study does not provide sufficient information about the size of the kidney.