Imaging Analysis of Thoracic Laparoscopic Artificial Vascular Bypass for Abdominal Aorta Dissection
Objective To analyze the value of CT angiography in the diagnosis of abdominal aortic dissection in adults and the evaluation and follow-up after thoracic laparoscopic artificial vascular bypass(thoracic aorta-abdominal aortic bypass).Methods The clinical and imaging data of an adult patient with abdominal aortic dissection diagnosed in our hospital before and after surgery,and the imaging data of the patient who needs to be followed up for 2 years after surgery according to clinical evaluation were analyzed.Results The first CTA examination before surgery showed that the middle part of the abdominal aorta(the lower level of the right renal artery-the upper margin of the Iumbo3 vertebrae)was not visible,with a range of about 50mm,which was considered to be occlusion or abnormal development.The main and branches of the superior mesenteric artery are obviously tortuous and dilated,and one branch is connected with the lower abdominal aorta.Review 1 week after operation:The artificial blood vessels between the distal descending aorta and the distal abdominal aorta were smooth.The results of CTA follow-up at 1 and 2 years after surgery showed no significant changes:the artificial blood vessels were patency after the artificial blood vessels between the distal segment of the descending aorta and the distal segment of the abdominal aorta,and a small amount of non-calcified plaque formation was observed at the lower segment of the artificial blood vessels,and no significant stenosis was observed in the lumen.Condusion CT angiography can be used as the first choice in the preoperative diagnosis of abdominal aortic dissection,the evaluation of postoperative efficacy and follow-up after thoracic laparoscopic artificial vascular bypass.
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