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Biomedical subjects

K Yasui

Publications and source records attributed to K Yasui.

At least 361 records · Page 20Linked to original sources
PubMedDate not supplied

Percutaneous feeding gastrostomy in patients with a partial gastrectomy: transhepatic approach with CT guidance.

BACKGROUND: Percutaneous gastrostomy in patients with a partial gastrectomy is rarely performed because the gastric remnants are generally small, positioned high subcostally, and overlaid by the transverse colon and the left lobe of the liver. METHODS: We performed percutaneous transhepatic feeding gastrostomy in four patients with a partial gastrectomy whose conditions precluded oral feeding. The gastric remnant was punctured with a 22-gauge percutaneous transhepatic cholangiography needle through the left lobe of the liver with computed tomography guidance and following tract dilation over the guidewire 8 or 9F. Cope loop catheters were fluoroscopically placed. RESULTS: No obvious complications were encountered during the procedures. The catheter feedings were continued for 2 to 7 months without any serious problems. CONCLUSIONS: We conclude this technique can be performed easily and may be safe because of the presence of the adhesion between the remnant and the liver, which prevents a massive hemorrhage or the displacement of the catheters.

Aged↗
PubMedDate not supplied

Asymptomatic membranous obstruction of the inferior vena cava due to large intrahepatic collaterals.

This paper presents a case of asymptomatic membranous obstruction of the inferior vena cava with a rare hemodynamic pattern consisting of large intrahepatic venous connections between the right inframembranous and the middle supramembranous hepatic vein. These remarkably large collaterals obviated significant enlargement of the azygous venous system and the development of a Budd-Chiari syndrome.

Aged↗
PubMedDate not supplied

Localization of small pulmonary nodules for thoracoscopic resection: use of a newly developed hookwire system.

We developed a stainless steel spring hookwire, 0.28 mm in diameter and 10 mm in length, with a 30-cm-long, 5-0 nylon monofilament suture firmly attached to its funnel-shaped end. A 21-gauge, 10-cm-long cannula was used as an introducer, and a 24-gauge, 10-cm-long blunt-pointed needle as a pusher. The hookwire was successfully placed into the target pulmonary parenchyma under computed tomography guidance in two patients with a small pulmonary nodule. The attached string served as a clear guide at thoracoscopy. Flexibility of the exposed suture through the skin eased wire management after placement. No wire dislodgement occurred.

Adult↗
PubMedDate not supplied

Lack of benefit of combined pancreaticosplenectomy in D2 resection for proximal-third gastric carcinoma.

Of the 2790 patients with gastric carcinoma who underwent surgery between January 1978 and December 1993, there were 224 who underwent a D2 resection for cancer of the proximal third of the stomach. Survival in these patients was retrospectively analyzed with special reference to the survival benefit of pancreaticosplenectomy (PS). The D2 resection involved a splenectomy in 129 patients, a PS in 38 patients, and neither in 57 patients, with 5-year survivals of 74%, 59%, and 91%, respectively. Although these differences in survival were attributable to the apparent deviation in the incidence of prognostic variables, no significant survival benefit of PS was observed for patients with the same clinical stage disease (stages II and III) or the same modal status (n1 and n2). Because PS was associated with a significant increase in the incidence of anastomotic dehiscence and length of hospital stay, the dismal survival benefit implies that it should not be performed routinely with the D2 resection but should be employed only for lesions with direct invasion of the pancreas.

Gastrectomy↗
PubMedDate not supplied

Transcatheter embolization of pulmonary artery false aneurysm associated with primary pulmonary hypertension.

A 29-year-old woman with primary pulmonary hypertension presented with recurrent hemoptysis. Contrast-enhanced CT of the chest demonstrated the enhanced mass surrounded by consolidation related to parenchymal hemorrhage. Pulmonary angiography suggested that the mass was a pulmonary artery false aneurysm. After a microcatheter was superselectively inserted into the parent artery of the false aneurysm, the false aneurysm was successfully treated by transcatheter embolization with coils. Her hemoptysis has never recurred.

Adult↗