(Disclaimer: This article is for scientific purposes only, in order to protect patient privacy, the relevant information in the following content has been processed) Abstract: Thoracic aortic aneurysm is an abnormal tumor-like protrusion of part of the thoracic aorta, an expansive lesion, usually with symptoms such as chest discomfort or vague pain, which often need to be dealt with in clinical practice. This case presents Mr. Wang, who presented with vague pain in the chest 1 week ago, which was not relieved after resting, so he was admitted to our hospital, where he was initially diagnosed with thoracic aortic aneurysm after a comprehensive history, physical examination, and plain CT. Surgical treatment was given, and the aneurysm was isolated with good results, and the patient was cured and discharged. Basic information] Male, 56 years old [Disease type] Thoracic aortic aneurysm [Hospital] Henan Provincial People’s Hospital [Date of consultation] April 2022 [Treatment plan] Surgical treatment (thoracic aortic endoluminal stenting: single-branching aortic stenting) [Period of treatment] 1 week of hospitalization, 1 month of outpatient follow-up [Effect of treatment] The aneurysm was well isolated and cured and discharged from the hospital I. Initial consultation Mr. Wang came to our clinic with the main complaint of “chest pain for 1 week”, stating that he had a vague pain in his chest that gradually appeared 1 week ago and was not relieved after resting, so he came to our clinic for further treatment. Mr. Wang had a history of hypertension, diabetes mellitus and uremia (long-term dialysis). Physical examination: Mr. Wang’s spirit was poor, a few wet rales could be detected in both lung bases, his heart sounds were slightly weak, there was no abdominal tenderness, and the pulsations of the bilateral femoral arteries and dorsalis pedis arteries were normal. Comprehensive history, physical examination, scanning CT (thoracic aortic diameter widening), preliminary diagnosis of thoracic aortic aneurysm, recommended hospitalization to control blood pressure, improve the aortic enhancement CT examination, and surgical treatment, Mr. Wang agreed. After hospitalization, Mr. Wang was admitted to the hospital for active blood pressure control and preoperative examinations. CTA of the aorta suggested that the aortic arch was dilated and close to the left subclavian artery. After preoperative discussion, the surgical plan was formulated as follows: 1, left common carotid artery – left subclavian artery diversion + aortic coated stenting 2, single-branch stenting aortic coated stenting Both options were available, but considering Mr. Wang’s long term dialysis, subcutaneous tissue edema, long-term nutritional deficiencies, and postoperative difficulty in healing of the incision, the family was informed of his condition and the surgical plan and chose the second surgical plan. The operation was performed under general anesthesia, and an incision of about 4-5 cm was made in the right groin area to expose the femoral artery, and a 5F arterial sheath was inserted by puncture; a 5F gold-labeled pig-tail catheter was introduced into the left brachial artery to show the location of the aneurysm and mark the location of the aneurysm; an aortic stent was entered into the aortic membrane stent in the right groin, and a catheter was introduced into the left brachial artery to introduce a single branch of the aortic stent into the left subclavian artery, and a sufficiently positioned and released stent was introduced into the aortic membrane stent. The stent was released after adequate positioning, and the procedure went smoothly, and the aortic aneurysm was satisfactorily isolated. (Three-dimensional drawing of the aneurysm) III. Treatment effect The whole treatment process of Mr. Wang was smooth, and after the operation, he controlled his blood pressure, actively observed his condition, and his pain symptoms were relieved. One week after surgery, follow-up CT showed that the aneurysm disappeared. The single branch aortic membrane stent, well positioned, the aneurysm isolation was successful, Mr. Wang’s surgery went smoothly, no complications occurred during the perioperative period, and he was cured and discharged after 1 week of hospitalization. 1 month later, Mr. Wang said that he had a good recovery after the operation, which did not affect his daily life and work, and he was satisfied with the treatment effect. Precautions We are glad that Mr. Wang’s symptoms have improved after treatment, but due to Mr. Wang’s chronic renal failure and long-term dialysis, his blood pressure is significantly higher than normal, so he needs to pay attention to some matters after discharge from the hospital after aortic stenting: 1. He needs to control his blood pressure in the normal range for a long time, so as to avoid serious vascular damage caused by the high blood pressure after aortic stenting due to the stimulation of blood vessels causing a serious sandwich. 2, After aortic membrane stent placement, we should pay attention to increase nutrition, eat a light, nutritious diet, recommended to eat high protein, high vitamin, high fiber food, to avoid catching a cold to cause a cold; 3, regular postoperative review to understand the positioning of the aortic membrane stent and whether there is any endoleak and other complications occur. V. Personal perception Thoracic aortic aneurysm is currently treated by interventional therapy, surgical therapy and hybrid therapy. This case helps more people understand the disease of thoracic aortic aneurysm by introducing the diagnosis and treatment process of Mr. Wang, who had a thoracic aortic aneurysm, including the preoperative diagnosis, surgical process, and perioperative treatment, etc. In particular, Mr. Wang had a history of chronic aortic aneurysm. In particular, Mr. Wang had a history of chronic renal failure and long-term dialysis, and the treatment plan should take into account the treatment effect and Mr. Wang’s body tolerance, so the choice of single-branch aortic membrane stent is a better treatment strategy, and the implementation of the surgical plan also proved the above judgments, and the whole process of diagnosis and treatment is more satisfactory.