Retrograde embolization of internal iliac artery aneurysms that enlarged after proximal ligation: A report of 5 patients.

The transarterial approach is generally feasible for endovascular treatment of internal iliac artery aneurysms (IIAAs). However, this approach becomes difficult in patients who have undergone exclusion surgery (proximal ligation). We report our experience of performing transcatheter arterial embolization (TAE) using a retrograde approach from the deep femoral artery (DFA) for IIAAs that had enlarged after exclusion surgery.

Usefulness of computed tomography aortography and dye infusion in confirming the feeding arteries for effective treatment of a large squamous cell carcinoma of the lower lip with a single intra-arterial infusion chemotherapy combined with radiotherapy.

A 73-year-old male presented with a lower lip squamous cell carcinoma (SCC) (23 mm in diameter). Systemic imaging, including computed tomography (CT) and positron emission tomography, showed no evidence of distant metastasis. Due to the large size of the tumor, reconstruction after surgical tumor removal was considered to be difficult.

An anomalous left adrenal vein draining into both the left renal vein and inferior vena cava: A case report.

A male patient in his forties was diagnosed with primary aldosteronism following blood tests. The patient requested surgical treatment and was transferred to our department for adrenal vein sampling. Preoperative contrast-enhanced computed tomography (CT) revealed that the left adrenal vein (LAV) did not form a common trunk with the left inferior phrenic vein, and instead drained into both the left renal vein (LRV) and inferior vena cava (IVC) after the bifurcation.

Successful coil embolization of post-hepatectomy arterioportal fistula that reduced ascites and improved liver function.

A 71-year-old man had previously undergone S7 + S8 dorsal segmentectomy and S5 partial hepatectomy for hepatocellular carcinomas. Six months later, he experienced abdominal distention. Abdominal computed tomography (CT) showed massive ascites and a significant hepatic arterioportal shunt.

Impact of anticancer drugs on the therapeutic efficacy and side effects of hepatic arterial embolization for hepatocellular carcinoma.

Background And Aim: Transcatheter arterial chemoembolization (TACE) using various anticancer drugs is often performed to treat hepatocellular carcinoma (HCC). We aimed to compare the therapeutic efficacy and side effects of TACE with anticancer drugs transcatheter arterial embolization (TAE) without anticancer drugs for HCC.

Methods: Patients with HCC were randomized to either the TACE or TAE group.

Comparison of Renal Damage Following Renal Artery Embolization with Three Different Embolic Mixtures in Swine.

Purpose: Renal artery embolization is a minimally invasive and effective procedure for renal ablation, a complete necrosis of the renal parenchyma. This study aims to compare the extent of renal damage in swine following renal artery embolization with ethanol and N-butyl-2-cyanoacrylate, commonly used as embolic materials in renal ablation.

Material And Methods: Three different embolic mixtures were prepared for renal artery embolization in swine: 33% ethanol-Lipiodol mixture (ethanol:Lipiodol = 1:2; Group A), 67% ethanol-Lipiodol mixture (ethanol:Lipiodol = 2:1; Group B), and 10% N-butyl-2-cyanoacrylate-Lipiodol mixture (N-butyl-2-cyanoacrylate:Lipiodol = 1:9; Group C).

Balloon-Assisted Portal Vein Embolization Using n-Butyl-2-Cyanoacrylate-Lipiodol-Iopamidol Mixture in Swine: A Comparison of 2 Formulations.

Purpose: To compare 2 ratios of n-butyl-2-cyanoacrylate (nBCA)-ethiodized oil (Lipiodol)-iopamidol (NLI) in balloon-assisted portal vein embolization (PVE) in swine.

Materials And Methods: In an in vitro study, NLI prepared at a ratio of 2:3:1 (NLI231) or 1:4:1 (NLI141) was injected into 2.5- or 10-mL syringes filled with swine blood, and the viscosity of NLI was measured to determine an appropriate balloon occlusion time.

Feasibility of the Glue-in-Plug Technique Using a Novel Liquid Embolic Material in a Swine Model.

Purpose: To evaluate the feasibility of the glue-in-plug (GIP) technique using n-butyl-2-cyanoacrylate‒Lipiodol (NL)-iopamidol (NLI) for short-segment embolization in swine.

Materials And Methods: The renal arteries, left external iliac artery, subclavian arteries, and common carotid arteries were each embolized in 4 swine using the GIP technique under general anesthesia. First, a type I Amplatzer vascular plug (AVP) (1-2 times the target vessel diameter) was deployed in the target artery.

Duodenal bleeding outside covered stents identified by selective computed tomography during arteriography that was successfully treated by embolization: A case report.

The patient was a man in his 60s who previously underwent placement of covered stents in the duodenum for a duodenal stricture caused by pancreatic cancer invasion. He experienced multiple episodes of hematemesis and hematochezia during hospitalization. Emergency upper and lower gastrointestinal endoscopies were performed but were unable to reveal the bleeding source.

Permissive untreated pseudoaneurysm concept in damage control interventional radiology for traumatic pancreaticoduodenal artery injury.

Background: Angioembolization for traumatic pancreaticoduodenal artery injury with unstable circulation, which characteristically requires a prolonged procedure time, does not yet have a standardized strategy for damage control interventional radiology.

Case Presentation: We encountered two cases of rare traumatic pancreaticoduodenal artery injury wherein the patients were saved by a multidisciplinary team with a shared goal of clinical success, rather than the procedural success of angioembolization. Both patients treated with angioembolization had residual pseudoaneurysm or faint extravasation in the pancreaticoduodenal artery arcade.

Percutaneous transsplenic venous embolization of elevated jejunal varices after pancreaticoduodenectomy: A case report.

Recent advances in chemotherapy and radiotherapy have led to an increase in the number of long-term survivors of pancreatic cancer. However, this has also increased the number of patients suffering from ectopic varices and bleeding owing to left-sided portal hypertension and thrombocytopenia caused by splenomegaly after pancreaticoduodenectomy combined with resection of the splenic vein. A 65-year-old woman with varices of the elevated jejunum due to left sided portal hypertension after pancreaticoduodenectomy had repeated melena, which started about 1 year before admission.

Successful coil embolization of a ruptured aneurysm of the arc of Riolan artery.

The arc of Riolan (AOR) is an anastomosis between the middle and left colic arteries. Aneurysms of the AOR are very rare visceral artery aneurysms. A 44-year-old man presented with abdominal pain and loss of consciousness.

Usefulness of ethiodized oil and gelatin sponge particles for delaying the washout of indocyanine green from the liver in swine.

Purpose: To assess the effect of ethiodized oil (EO) and gelatin sponge particles (GS) on delaying the washout of indocyanine green (ICG) from the liver in swine.

Methods: Fifteen swine were divided into 3 groups: injection of a mixture of ICG and water-soluble contrast medium (CM) followed by embolization with GS (group A), injection of a mixture of ICG and EO (group B) and injection of a mixture of ICG and EO followed by embolization with GS (group C). The liver surface was observed using an infrared camera system during and at 1, 2, 3, and 6 h after the procedure to measure ICG contrast.

Transcatheter arterial embolization of abnormal neovessels in a swine model of knee arthritis.

Background: In recent years, transcatheter arterial embolization (TAE) using imipenem/cilastatin (IPM/CS) has attracted attention as a treatment for relieving osteoarthritis (OA) pain. However, IPM/CS is not approved by Japanese medical insurance for use as an embolic material. Therefore, it is necessary to develop new embolic materials for TAE to relieve OA pain.

Determination of the Optimal Ratio and the Relationship Between Viscosity and Adhesion of n-Butyl Cyanoacrylate-Lipiodol-Iopamidol for Balloon-Assisted Embolization of Wide-Neck Aneurysms in Swine.

Purpose: To determine the optimal ratio of n-butyl cyanoacrylate-Lipiodol-iopamidol (NLI) for balloon-assisted embolization of wide-neck aneurysms in swine.

Materials And Methods: Sixteen NLI mixtures were prepared for in vitro studies. The viscosity of each mixture was measured for 30 min.

Efficacy and safety of CT-guided cryoablation after lipiodol marking and embolization for RCC.

Purpose: To evaluate the safety and efficacy of CT fluoroscopy-guided percutaneous cryoablation (PCA) after lipiodol marking and embolization (LME) in patients with renal cell carcinoma (RCC).

Material And Methods: This study included 29 patients (18 men, 11 women; mean age 69 years, range 22-89 years) with 42 RCCs. They underwent CT fluoroscopy-guided PCA after LME between March 2016 and March 2020.

A case of maxillary cancer treated by intra-arterial therapy using a steerable microcatheter.

We report on a 69-year-old man with locally-advanced left maxillary sinus cancer who underwent treatment with intra-arterial chemoradiotherapy. Angiography showed that the main feeding arteries were the left maxillary artery and the ophthalmic artery, arising from the internal carotid artery. Due to acute branching of the ophthalmic artery, conventional microcatheters could not be inserted.

Artificially induced pneumothorax with a Veress needle for cryoablation of renal cell carcinoma.

Thermal ablative techniques are used increasingly to treat renal cell carcinoma (RCC). Percutaneous cryoablation of tumors at the upper pole of the kidney may result in pulmonary damage due to the intervening lung parenchyma. We treated two patients with RCC in the upper pole of the kidney by inducing pneumothorax with a pneumoperitoneum needle before proceeding to percutaneous cryoablation.

Combination with portosystemic shunt occlusion and antiviral therapy improves prognosis of decompensated cirrhosis.

Background And Aim: Portosystemic shunt occlusion using endovascular treatment can transiently improve liver function in patients with decompensated cirrhosis. In recent years, viral hepatitis can be easily controlled. The present study aimed to clarify the safety and efficacy of endovascular treatment in decompensated cirrhotic patients, and to elucidate whether viral treatment improves the prognosis after shunt occlusion.

Efficacy of arterial infusion of iodized oil on CT-guided cryoablation for renal cell carcinoma.

Purpose: To evaluate the effectiveness of the transarterial infusion of iodized oil and gelatin particles for marking before CT-guided percutaneous cryoablation (PCA) in patients with renal cell carcinoma (RCC).

Material And Methods: This study included ten patients (seven men, three women; mean age 53 years) with 13 RCCs between July 2016 and September 2017. The transarterial infusion of iodized oil and gelatin particles was considered successful when iodized oil accumulated in the target area on CT.

Protection from injury of organs adjacent to a renal tumor during percutaneous cryoablation.

Renal cryoablation has become accepted as treatment for small renal tumors as an alternative to surgery. However, parallel with the increase in the use of this therapy, there also has been increases in the number of reports of complications related to renal cryoablation. One potential complication is injury to important non-renal structures adjacent to the ablated renal tumor, such as the colon, duodenum, ureter, psoas muscle and so on.

Time-Dependent Effects of Cryoablation for Renal Tumor on Overall and Split Renal Function.

Purpose: To evaluate the influence of percutaneous cryoablation for renal cell carcinoma on function of the affected kidney.

Materials And Methods: Between June 2016 and September 2017 at our institution, 12 inoperable patients underwent 15 cryoablation sessions for 17 small renal tumors. Of these, 9 patients who underwent 11 sessions of cryoablation were the focus of this study.