Publications by authors named "Shigeki Hirayama"

Several options exist for the treatment of celiac artery (CA) aneurysms (CAAs), including surgical repair and endovascular procedures. However, treatment of CAAs can be challenging owing to their proximity to the ostium of the CA and involvement of the CA branches. In the present report, we have described a case of a giant CAA extending from the proximal CA to the hepatosplenic bifurcation.

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Ultrasound-guided thrombin injection (UGTI) is an option for the treatment of postcatheterization pseudoaneurysms. This method is less invasive and less time-consuming compared with other procedures since it can be performed without general anesthesia, skin incision, or occlusion of the artery. Herein, we report on the efficacy of UGTI for postcatheterization bleeding complications.

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Thymic haemangiomas and innominate vein aneurysms are rare with only 7 and 19 previous cases, respectively, reported in the medical literature. The aetiology of an innominate vein aneurysm remains unclear and there is no previous report of tumour involvement. We present the case of a 27-year old male with concomitant mediastinal tumour and innominate vein aneurysm who underwent surgical treatment.

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Background: Endovascular aneurysm repair has gained widespread acceptance, and there has been a significant increase in the number of aneurysms treated with stent grafts. However, the endovascular technique alone is often not appropriate for anatomically complex aneurysms involving the neck branches. We used the TAG stent for thoracic aortic aneurysms (TAA), and report our initial results.

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