[Coronary Artery-Left Atrial Fistula Complicated by a Left Atrial Myxoma:Report of a Case].

We report our experience with a case of a left atrial mass coexisting with a coronary artery-left atrial fistula. The abnormal vessels extended from the right coronary artery and left circumflex artery to the tumor in the left atrium and were aggregated within the tumor. An efflux of the contrast media was also noted from the tumor into the left atrium.

[Surgery in Elderly Patient for Coronary Arteriovenous Fistula and Giant Coronary Artery Aneurysm Associated with Cardiac Failure;Report of a Case].

An 82-year-old woman visited the hospital with the chief complaint of dyspnea on light exertion. Computed tomography (CT) showed a coronary artery aneurysm and coronary arteriovenous fistulas. The pulmouary flow/systemic flow (Qp/Qs) ratio was 1.

[One-stage Surgery for a Non-Marfan Elderly Patient with Aortic Regurgitation and Pectus Excavatum].

We describe a case of 1-stage surgery comprising aortic valve replacement and thoracoplasty that was performed on an elderly patient with a good result. An 85 -year-old man visited our hospital with the chief complaint of chest discomfort. Examination revealed aortic regurgitation and pectus excavatum.

Durability-enhanced two-dimensional hole gas of C-H diamond surface for complementary power inverter applications.

Complementary power field effect transistors (FETs) based on wide bandgap materials not only provide high-voltage switching capability with the reduction of on-resistance and switching losses, but also enable a smart inverter system by the dramatic simplification of external circuits. However, p-channel power FETs with equivalent performance to those of n-channel FETs are not obtained in any wide bandgap material other than diamond. Here we show that a breakdown voltage of more than 1600 V has been obtained in a diamond metal-oxide-semiconductor (MOS) FET with a p-channel based on a two-dimensional hole gas (2DHG).

A Rare Case of Complete Stent Fracture, Coronary Arterial Transection, and Pseudoaneurysm Formation Induced by Repeated Stenting.

This report describes a rare asymptomatic case of complete stent fracture, coronary arterial transection, and pseudoaneurysm formation in response to repeated stenting. The proximal and distal ends of transected coronary artery were closed, and distal bypass was performed. Coronary arterial transection can occur in patients with repeated stenting as a long-term adverse event.

Chimney technique for aortic dissection involving an aberrant right subclavian artery.

We report a case involving a ruptured acute type B aortic dissection originating from an aberrant right subclavian artery (ARSA). A thoracic stent-graft was deployed in the distal arch close to the origin of the ARSA; the entry site at the origin of the ARSA was embolized with metallic coils. Perfusion of the left subclavian artery was preserved without a surgical bypass by using a chimney graft.

[Long-term survival after complete resection of primary cardiac undifferentiated sarcoma;report of a case].

A 34-year-old man experienced lower limb ischemia due to tumor emboli as an initial symptom. Histopathologic examination of the embolic material revealed undifferentiated sarcoma. By echocardiography the original tumor was arising from the posterior mitral leaflet, and therefore, excision of the mitral valve resulted in complete resection of the sarcoma.

Endovascular repair of distal arch aneurysm with double-chimney technique.

We report 2 cases of distal arch aneurysm treated by thoracic endovascular aneurysm repair (TEVAR) with the "double-chimney technique." This technique permitted the implantation of a thoracic stent graft in the ascending aorta over the arch branches while preserving perfusion of innominate and left common carotid arteries without debranching bypasses. The procedure is a feasible and less invasive treatment for distal arch aneurysm with a short proximal neck (<2 cm to the origin of the innominate artery) in patients at high risk when undergoing sternotomy and in emergent cases.

A case of cardiac rupture subsequent to myocardial infarction diagnosed in emergency room.

A 72-year-old woman was transferred to the emergency room because of left anterior chest pain with cold sweating. Electrocardiography revealed recent anterior myocardial infarction. Echocardiography showed akinesis of the mid-ventricular septum to the apex by apical view, a small amount of pericardial effusion and collapse of the right ventricular wall, indicating cardiac tamponade, by subcostal view.