Silver-Mixed Port Reduces Venous Access Port Related Infection Rate Compared to Non-Silver-mixed Port: A Single-center Retrospective Analysis.

Purpose: Totally implantable venous access ports (TIVAPs) are increasingly used as safe and convenient central venous access devices. However, several TIVAP-related complications occur, with port/catheter infection being most common. Silver-mixed ports have recently been introduced in anticipation of reducing TIVAP infection.

Polymerization Properties of n-Butyl Cyanoacrylate Mixed with Ethiodized Oil in the Lymphatic System: In Vivo Investigation in a Rabbit Model.

Purpose: To evaluate the polymerization properties of a mixture of n-butyl cyanoacrylate (nBCA) and ethiodized oil in the lymphatic system using an animal model.

Materials And Methods: Nineteen male Japanese White rabbits underwent 28 lymphatic embolization procedures under fluoroscopic guidance using manually injected mixtures of nBCA and ethiodized oil at ratios of 1:2 (nBCA density of 33%), 1:4 (20%), 1:6 (14%), and 1:8 (11%) via the popliteal lymph node. The time required for polymerization and the distance traveled by the mixture were evaluated and compared among the groups using the Kruskal-Wallis test.

Inferior vena cava diameter on CT angiography predicts mesenteric angiography positive for extravasation in colonic diverticular bleeding.

Purpose: Transcatheter arterial embolization (TAE) for colonic diverticular bleeding (CDB), an established procedure for hemostasis, is sometimes complicated by spontaneous hemostasis and unclear bleeding site on angiography despite active arterial bleeding on preoperative computed tomography angiography (CTA). Therefore, to investigate and increase the feasibility of TAE, this retrospective study evaluates the clinical and radiological features related to positive extravasation on angiography.

Material And Methods: Sixty CDB patients with extravasation on CTA underwent TAE between January 2011 and February 2021 and were divided into extravasation-positive (P-group; n = 25) and -negative groups (N-group; n = 35) based on the superior or inferior mesenteric angiography.

Efficacy and safety of endovascular therapy for delayed hepatic artery post-pancreatectomy hemorrhage: development of extrahepatic collateral circulation and complications of post endovascular therapy.

Background: Endovascular therapy (ET) for delayed hepatic artery post-pancreatectomy hemorrhage (HA-PPH) may require complete hepatic artery occlusion (HAO). Nonetheless, the development of extrahepatic collateral circulation (EHC) and the relationship between radiological factors (EHC, portal vein stenosis, and HAO) and adverse hepatic events after ET remain unclear. This study aimed to evaluate the efficacy and safety of ET for delayed PPH and examine the development of EHC.

Risk and prognostic factors of post-catheterization pseudoaneurysm.

Purpose: To evaluate the risk and prognostic factors of post-catheterization pseudoaneurysm (PPA).

Material And Methods: To identify the risk factors for PPA occurrence, clinical findings were compared between 22 consecutive patients with radiologically confirmed PPAs (PPA group) and 300 randomly extracted patients without PPA, who underwent transarterial angiography or intervention (sample group) between 1 January 2015 and 31 March 2020. The PPA group was further divided into those treated successfully with mechanical compression (group A) and those requiring ultrasound-guided thrombin injection after compression failed (group B).

Efficacy of Portal Vein Embolization with a Procedure of Sheath Injection and Balloon Occlusion with Gelatin Sponge.

Introduction: To evaluate the efficacy, safety, and associated complications of a novel and simple approach to portal vein embolization that utilizes sheath injection and balloon occlusion (PVE-SIBO) with gelatin sponge (GS) for the purpose of increasing future liver remnant (FLR) volume.

Methods: Between 1 January, 2006, and 31 August, 2020, 20 patients (15 men, 5 women, aged 64.6 ± 10.

Hemorrhagic Complication in Surgical Resection for Massive Plexiform Neurofibroma in Body Trunk: The Flow-Void Sign as a Predictor and Preoperative Embolization as Prevention.

Background: Plexiform neurofibromas (PNs) are highly vascularized and potentially malignant tumors. Surgical resection of a PN can be complicated by perioperative hemorrhagic events (PHE), including excessive intraoperative blood loss and postoperative hematoma at the surgical site. This study aimed to evaluate the predictive factors of PHE and the usefulness of preoperative embolization for PN.

Evaluation of the usefulness of cystic duct three-dimensional computed tomography with non-contrast for before laparoscopic cholecystectomy and endoscopic transpapillary gallbladder drainage in comparison to magnetic resonance cholangiopancreatography.

Introduction: The purpose of this study is to evaluate whether anatomical variations of the cystic duct and accessory bile duct can be grasped by cystic duct three-dimensional (3D)-computed tomography (CT) using non-contrast CT and to examine the possibility of omitting magnetic resonance cholangiopancreatography (MRCP).

Methods: Of patients who underwent non-contrast abdominal CT between May and October 2019, those who underwent MRCP within 1 month before and afterwards were targeted. Seven assessors visually evaluated the cystic duct 3D-CT images on a 5-point scale.

Retrograde transvenous lymphatic embolization for postoperative chylous ascites: A report of three cases and literature review.

Percutaneous transabdominal lymphangiography and embolization have been reported as useful approaches for intractable chylothorax or chylous ascites. However, they are often difficult to perform after extensive lymph node dissection because disruption of the antegrade lymphatic flow makes leaks identification difficult. When the leakage point cannot be identified or percutaneous transabdominal lymphangiography and embolization fail, a retrograde transvenous approach to the thoracic duct can be used instead.

Ectopic origin of bronchial arteries: still a potential pitfall in embolization.

Purpose: To evaluate the influence of ectopic origin of bronchial arteries (BAs) on bronchial artery embolization (BAE) for hemoptysis.

Methods: CT and angiography images of 50 consecutive sessions in 39 patients (aged 26-93 years; mean, 70.6 years) who underwent BAE for hemoptysis from April 2010 to December 2019 were reviewed.

Percutaneous puncture and embolisation for pancreatitis-related pseudoaneurysm: the feasibility of thrombin injection even in collection of fluid surrounding the pseudoaneurysm.

Purpose: Pancreatitis-related pseudoaneurysm, a potentially life-threatening condition, is treated utilising endovascular management as a first choice and alternatively by percutaneous direct puncture of the aneurysm and embolisation.

Case Report: A 50-year-old man with alcohol-induced necrotic pancreatitis underwent transcatheter arterial embolisation (TAE) for multiple pancreatic pseudoaneurysms. TAE failed in one enlarged aneurysm in the pancreatic body, and percutaneous direct needle puncture and coagulation using thrombin was planned.

A rare manifestation of clinical T1 renal tumor with parasitic arterial supply from the superior mesenteric artery.

A 50-year-old man with von Hippel-Lindau syndrome who had undergone repeated tumor enucleation and transcatheter arterial embolization for multiple renal cell carcinomas (RCC) was referred to our hospital for percutaneous cryoablation (PCA) of an RCC of 42 mm in the midpole region of the right kidney. Transcatheter arterial embolization was planned prior to devascularize the RCC and selective angiography revealed parasitic arterial supply to the tumor by the ileocecal artery. Parasitic arterial supply to RCCs, particularly in patients with history of nephron-sparing treatment, can originate even from an intraperitoneal source and may lead to unexpected embolization.

Percutaneous cryoablation for stage T1b renal cell carcinoma in a patient with horseshoe kidney.

We report the first case of percutaneous cryoablation (PCA) for stage T1b renal cell carcinoma (RCC) in a horseshoe kidney (HK). A 76-year-old man with an HK underwent computed tomography-guided PCA for RCC measuring 42 mm (stage T1b) in diameter. Although transcatheter embolization before the PCA and hydrodissection were required to avoid complication and incomplete ablation, PCA was successfully performed without complication.

Transcatheter Arterial Embolization with a Mixture of Absolute Ethanol and Iodized Oil for Poorly Visualized Endophytic Renal Masses Prior to CT-Guided Percutaneous Cryoablation.

Purpose: To retrospectively evaluate the feasibility of transcatheter arterial embolization (TAE) using a mixture of absolute ethanol and iodized oil to improve localization of endophytic renal masses on unenhanced computed tomography (CT) prior to CT-guided percutaneous cryoablation (PCA).

Materials And Methods: Our institutional review board approved this retrospective study. From September 2011 to June 2015, 17 patients (mean age, 66.

Transcatheter embolization for hemoptysis associated with anomalous systemic artery in a patient with scimitar syndrome.

Background: Scimitar syndrome can present with a wide clinical spectrum of symptoms either early in the neonatal period or later in life.

Case Description: We report a case of a 62-year-old woman with anomalous systemic arterial supply to the basal lung with scimitar syndrome presenting as recurrent hemoptysis. Bronchoscopy revealed normal major bronchial branches without bronchial atresia, indicating that sequestration of the lung was not confirmed.

Digestive Tract Complications of Renal Cryoablation.

We report a case each of duodenorenal and colorenal fistula that arose after computed tomography-guided percutaneous cryoablation (PCA) for renal cell carcinoma and use imaging and endoscopic findings to analyze their causes and mechanisms. Both complications occurred though the edge of the iceball did not touch the intestinal wall, and patients' symptoms and fistula formation occurred several days after the PCA procedure. Based on imaging and endoscopy findings, we suspected the colorenal fistula resulted from bowel injury caused by ischemia from the occlusion of small vessels at the procedure's low temperature.

A successful case of liver biopsy via the right femoral vein using the Quick-Core biopsy needle.

A 35-year-old male with ascites and coagulopathy underwent transjugular liver biopsy (TJLB) for severe hepatic dysfunction. However, the acute angle of the inferior vena cava and hepatic veins (HVs) prevented insertion of a 14-gauge inner stiffening metallic cannula into the HV. He then underwent successful liver biopsy by right femoral vein access (transfemoral liver biopsy) using a TJLB device without complications and was pathologically diagnosed with nonalcoholic steatohepatitis.