We evaluated the efficiency of endovenous laser ablation (EVLA) using a 1470-nm diode laser with radial slim fiber for the treatment of varicose veins, by comparing them with those of EVLA using a 980-nm diode laser. The frequency of postoperative pain and bruising in the 1470-nm laser group was significantly lower than that in the 980-nm laser group. Postoperative subjective and objective symptoms and venous function improved significantly in both groups, and there was no significant difference between the two groups. Ultimately, the outcomes of 1470-nm EVLA using a radial slim fiber were as good as or better than those of 980-nm EVLA.

We previously analyzed a saccular abdominal aortic aneurysm model and elucidated that saccular abdominal aortic aneurysms manifest abnormal hemodynamic factors from an early stage and that stenting improves hemodynamic factors. We analyzed a model of a saccular abdominal aortic aneurysm implanted with stents of different diameters and lengths to examine the optimal stent size to improve hemodynamic factors in this study. The stent diameter was set using three patterns as follows: 24 mm, the same as the aortic diameter; 26.4 mm, 10% increase; and 28.8 mm, +20% increase. The stent length was extended 10 mm vertically from the 28-mm length of the aneurysmal portion to 50 mm and 70 mm in two patterns, for a total of six types. The analysis revealed that all hemodynamic factors improved in all sizes compared with those prior to stenting. Streamlines entering the aneurysm were reduced with larger stent diameters; however, no difference in length was observed. Moreover, no clear differences in the mean flow velocity within the aneurysm, maximum shear stress, or pressure loss coefficient between the models were observed. The implanted stent was sufficient in terms of efficacy if it adhered to the aortic wall and covered the saccular aneurysm area.

The patient suffered from necrosis in the lower right leg due to ischemia. Preoperative angiography revealed occlusion from the superficial femoral artery to the tibio-peroneal trunk. The sural artery remained patent as a collateral pathway. The crural arteries were close to the necrotic area and not suitable for distal anastomosis. Therefore, a femoro–sural bypass was performed using an autogenous vein. Following the bypass surgery, satisfactory blood flow recovery in the lower leg was confirmed. Subsequently, a below-knee amputation was carried out. The postoperative course was favorable, and the patient regained walking function with a prosthetic leg six months later.

A 52-year-old male, patient who had undergone ascending aorta replacement for acute type A aortic dissection, was referred to our hospital. Ascending aortic graft was severely kinked and caused hemolytic anemia. We performed the endovascular intervention, and Palmaz EL stents were successfully inserted at the kinked ascending aortic graft. As a result, hemolysis resolved soon after the intervention. We aim to share our experience of inserting bare-metal stents in a patient with mechanical hemolysis due to a kinked aortic graft.

Hemodialysis access aneurysms caused by outflow vein stenosis present a significant clinical challenge. A 36-year-old woman with a history of prosthetic graft hemodialysis access created 16 years previously developed an aneurysm at the venous anastomosis site due to outflow vein stenosis. The patient underwent stent graft placement to address the stenosis and aneurysm. After the procedure, the blood flow improved, and the aneurysm flow was eliminated. The aneurysm reduced in size over time, and the patient had a favorable outcome. Stent graft treatment for hemodialysis access aneurysms caused by outflow vein stenosis is effective and safe and offers a viable clinical option.

Between 2008 and 2014, 3 patients with spontaneous isolated superior mesenteric artery dissection received endovascular treatment with covered stents. In all cases, the indication for intervention was bowel ischemia symptoms refractory to the conservative therapy. Symptoms have disappeared soon after the interventions in all patients, and 15 years, 9 years and 14 years have passed without stenosis or occlusion of covered stents. Endovascular treatment with covered stent may be a safe and effective option for patients with bowel ischemia caused by spontaneous isolated superior mesenteric artery dissection.