Congenital Anomalous Azygos Vein Drainage Causing Pulmonary Embolus in a 91-Year-Old Patient

Background: Retroaortic course and azygos continuation of aberrant left brachiocephalic vein is a rare venous anomaly, which is usually associated with congenital heart disease and pulmonary artery anomalies. Venous stasis is a cause of pulmonary arterial thromboembolism, which can result from venous anomalies. Case presentation: We describe the case of a 91-year-old female admitted to our hospital with shortness of breath diagnosed with pulmonary embolism and infarctions by a CT pulmonary angiogram. CT also showed aberrant left brachiocephalic vein with vascular webs at its retroaortic course and azygos continuation, suggesting chronic venous thrombosis, which was considered to be the suspected source of emboli. Conclusion: To our knowledge, this is the first report presenting this vascular anomaly manifesting with chronic venous thrombosis and pulmonary embolism. Although rare, awareness and identification of this entity is important, especially in the absence of obvious embolic sources or in patients with recurrent embolus/consolidation.

Case Report: Efficiency of Embolization Microcoils for the Repair of Brachiocephalic Vein Perforation During Hemodialysis Catheter Placement

Background: The cuff catheter is one of the most common routes of vascular access in hemodialysis patients, while severe complications can occur during cuff catheter placement, such as bleeding, hematoma, and artery or vein damage. During catheterization, brachiocephalic vein perforation associated with a mediastinal lesion is rare. Open chest repair is effective for brachiocephalic vein perforation during catheter placement, but it entails a risk of potentially lethal trauma. Interventional treatment can be considered to reduce injury in this context, but relevant reports are limited.Case report: Herein, we describe our experience with a 68-year-old male hemodialyzed patient in whom cuff catheter vascular access was required for regular hemodialysis. He complained of mild pain in the left side of his chest during cuff catheter placement. The surgeon immediately checked the location of the catheter. Digital subtraction angiography revealed that the hemodialysis cuff catheter had punctured the mediastinal area from the left brachiocephalic vein. The patient was diagnosed with left brachiocephalic vein perforation (d ≈ 5 mm). Fortunately, the brachiocephalic vein perforation was successfully repaired with two embolization microcoils after comprehensive assessment and multidisciplinary consultation.Conclusion: Brachiocephalic vein perforation can be repaired with embolization microcoils during hemodialysis catheter placement, and this method of interventional treatment is safe and effective.

322 THORACOSCOPIC RETROSTERNAL GASTRIC CONDUIT RESECTION IN THE SUPINE POSITION FOR GASTRIC TUBE CANCER

Recent advances in treatment for esophageal cancer have improved prognosis after esophagectomy, but they have led to an increased incidence of gastric conduit cancer. In most gastric conduit cancer patients who underwent retrosternal reconstruction, median sternotomy is performed, which is associated with a risk of postoperative bleeding and osteomyelitis; pain often negatively affects respiration. To avoid these problems, we developed thoracoscopic retrosternal gastric conduit resection in the supine position (TRGR-S) as new procedure. Methods We performed the first case of TRGR-S for a 75-year-old male with retrosternal gastric conduit cancer. He was placed in the supine position. Four ports were placed in the left chest wall. The gastric conduit was separated from the epicardium, sternum, and left brachiocephalic vein. Due to adhesions between the gastric tube and the right pleura, combined resection of the right pleura was performed. Next, pediculated jejunal reconstruction via the presternal route was performed. Results Because there were few adhesions in the left thoracic cavity, this approach provided safety and a good surgical view, and it was easy to recognize the landmark including epicardium, sternum, and left brachiocephalic vein leading to appropriate resection of the tissue. Furthermore, there were few restrictions on the operative angle for the forceps and operability was quite ergonomic. Moreover, the lungs can be noninvasively contracted via an artificial pneumothorax. The pathological diagnosis was signet ring cell carcinoma (pT1b, pN0, M0, pStage I), indicating R0 resection. There were no post-operative complications. Conclusion This approach does not require sternotomy, so it has less risk of postoperative bleeding and osteomyelitis. Due to fewer adhesions, this approach is safe and provides a good surgical view. TRGR-S is a safe, ergonomic, and reliable procedure for resection of retrosternal gastric conduit cancer. Video This is the video of the operation ‘TRGR-S’, which is the new procedure for the gastric conduit cancer. https://www.dropbox.com/s/2whnekgp73hw1lz/video%20for%20ISDE2020.mov?dl=0.