• Journal of Korean Neurosurgical Society
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• v.49 no.2
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• pp.131-133
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• 2011

We performed a percutaneous vertebroplasty at the compressed L2 vertebral body of a 73-year-old female using a left-sided unilateral extrapedicular approach. She complained severe radiating pain and a tingling sensation in her left leg two hours after the vertebroplasty. Spinal computed tomographic scan showed a large retroperitoneal hematoma, and a subsequent spinal angiography revealed a left L2 segmental artery injury. Bleeding was successfully controlled by endovascular embolization. Recently, extrapedicular approaches have been attempted, allowing for the avoidance of facet and pedicle injury with only a unilateral approach. With this approach, however, the needle punctures the vertebral body directly. Therefore, this procedure carries the potential risk of a spinal segmental artery.

• Journal of Chest Surgery
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• v.25 no.11
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• pp.1354-1357
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• 1992

From May 1984 through December 1991, twelve patients underwent valve replacement for infective endocarditis at National Medical Center. There were 7 male and 5 female, ranged in age 16 to 61[mean 34.1] years. Four had native valve endocarditis, six had prosthetic valve endocarditis and two were associated with congenital heart disease. The indication of surgery was medically intractable congestive heart failure in all patients. 5 patients revealed systemic embolization and 4 patients had uncontrollable sepsis. The causative organism was Streptococcus in 4 patients, Staphylococcus in 1 patient and Pseudomonas in 2 patients. Hospital mortality was 33.3%[4/12]. The main cause of death was low cardiac output due to perioperative myocardial damage and cerebral vascular accident. There were 2 late mortality because of recurrent endocarditis. This review showed much higher mortality in prosthetic valve endocarditis[66.7%] than native valve endocarditis[33.3%].

• Journal of Trauma and Injury
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• v.28 no.4
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• pp.262-265
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• 2015

An arteriovenous fistula (AVF) from the renal artery following a penetrating abdominal trauma is not common. We report the case of a 19-year-old male who presented with a knife stab wound in the right upper quadrant. Due to unstable vital signs and to the protrusion of the mesentery through the stab wound, providing definite evidence of peritoneal violation, an emergent exploratory laparotomy was carried out. There were injuries at the proximal transverse mesocolon and the second portion of the duodenum, with bile leakage. There was also a mild amount of retroperitoneal hematoma near the right kidney, without signs of expansion or pulsation. The mesocolon and the duodenum were repaired. After the operation, abdominal computerized tomography (CT) was performed, which revealed contrast from the right renal artery shunting directly into the vena cava. Transcatheter arterial embolization with a coil and vascular plug was performed, and the fistula was repaired. The patient recovered completely and was discharged without complication. For further and thorough evaluation of an abdominal trauma, especially one involving the retroperitoneum, a CT scan is recommended, when possible, either prior to surgery or after surgery when the patient is stabile. Furthermore, a lateral retroperitoneal hematoma and an AVF after a penetrating trauma may not always require exploration. Sometimes, it may be safely treated non-operatively or with embolization.

• Tuberculosis and Respiratory Diseases
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• v.43 no.1
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• pp.96-101
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• 1996

Hughes-Stovin Syndrome is an exceedingly rare combination of distal pulmonary arterial aneurysm and deep vein thrombosis, mostly found in young patients. There are striking similarities between the vascular manifestation of Behçet's disease and Hughes-Stovin Syndrome. It has been suggested that they may have a similar pathogenesis. Most patients died of massive hemoptysis due to rupture of aneurysm. Recently we have experienced the first case of Hughes-Stovin Syndrome in Korea. A 37 year old male patient was admitted because of recurrent hemoptysis and intermittent fever. He had a history of recurrent aphthous ulcers and erythema nodosum-like skin rash, But no other findings of Behcet's disease was found. Angiography showed multiple pulmonary arterial aneurysm and deep vein thrombosis in Right lower extremity. Histologic examination of specimens of open lung biopsy revealed leukocytoclastic angiitis. Pulmonary arterial aneurysms were successfully treated by coil embolization and he is in good condition with corticosteroid and cyclophosphamide therapy.

• Journal of Veterinary Clinics
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• v.28 no.2
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• pp.240-243
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• 2011

Several vascular accesses can be used for catheter guided coil embolization for occluding patent ductus arteriosus (PDA). Although trans-femoral approach is most commonly used in dogs, it is often unable to insert angiocatheter for inserting the coil delivery system, especially small puppies weighing less than 2 kg of body weight. Therefore this case study developed trans-carotid method for puppy using JR coronary catheter and free push delivery system. Using this new method, we successfully treated a puppy with PDA weighing 1.25 of body weight.

• Journal of Korean Neurosurgical Society
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• v.62 no.4
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• pp.458-466
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• 2019

Objective : We retrospectively assessed the efficacy of stereotactic radiosurgery (SRS) for dural arteriovenous fistulas (DAVFs) involving the transverse-sigmoid sinus and analyzed the angiographic and clinical results with our 8-year experience. Methods : Nine patients with intracranial DAVFs involving the transverse-sigmoid sinus underwent SRS using a Gamma $Knife^{(R)}$ (Elekta Inc., Atlanta, GA, USA) between 2009 and 2016. Five patients underwent SRS for residual DAVFs after embolization and four patients were treated with SRS alone. The median target volume was $1.9cm^3$ (range, 0.8-14.2) and the median radiation dose of the target was 17 Gy (range, 16-20). The median follow-up period was 37 months (range, 7-81). Results : Pulsating tinnitus (33%) was the most common symptom. DAVFs were completely obliterated in four patients (44%) and subtotally obliterated in five (56%). Six patients (67%) showed complete recovery of symptoms or signs, and three (33%) showed incomplete recovery. One patient experienced a recurrent seizure. Adverse radiation effects after SRS occurred in one patient (11%). The total obliteration rates after SRS were 16.7%, 37.5%, and 68.7% at 1, 2, and 3 years, respectively. The median interval from SRS to total obliteration of the fistula was 31 months (range, 12-38). The rates at which the symptoms started to improve were 40% at 1 month and 80% at 2 months after SRS. Symptoms started to improve at a median of 5 weeks after SRS (range, 3-21). Conclusion : SRS with or without embolization is a safe and effective treatment to relieve symptoms and obliterate DAVFs on the transverse-sigmoid sinus.

• Journal of the Korean Society of Radiology
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• v.81 no.6
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• pp.1459-1465
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• 2020

The perforation of the intrathoracic internal jugular vein during the placement of an implantable central venous chemoport is a rare complication that is manifested by hemothorax or hemorrhagic shock. Furthermore, inappropriate instillation of a chemotherapeutic agent in the chemoport can cause chemical pleuritis, and the diagnosis of these complications prior to the instillation of chemotherapeutic agents and open thoracic surgery is mandatory. We report a patient with chemical pleuritis and hemothorax following an inappropriate instillation of a chemotherapeutic agent, through the perforated right internal jugular vein after placement of an implantable central venous chemoport. Treatment by embolization using coils and N-butyl cyanoacrylate, after percutaneous drainage, was successful.

• Journal of the Korean Society of Radiology
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• v.81 no.5
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• pp.1216-1221
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• 2020

Neoadjuvant concurrent chemoradiotherapy has been increasingly used to obtain secondary resectability for locally advanced pancreatic cancers. Although most patients require biliary decompression, only a few studies have investigated the safety of biliary stenting with chemoradiotherapy. Herein, we report a rare case of delayed hemorrhage of the hepatic artery caused by biliary stenting after chemoradiotherapy. The serial follow-up CT demonstrated that the biliary stent was approaching the right hepatic artery and eventually caused acute angulation and indentation. Diagnostic catheter angiography revealed contrast extravasation at the right hepatic artery, and endovascular embolization was performed. This report highlights the relevance of anatomical deformation after chemoradiotherapy, which can result in fatal complications. Indentation of the hepatic artery caused by biliary stents should be recognized as a warning sign of vascular injury.

• Journal of the Korean Society of Radiology
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• v.6 no.1
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• pp.11-17
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• 2012

The purpose of this study is to measure and evaluate radiation dose on patients in interventional radiological(IVR) procedures classified by each procedure, and aid as data for safety management. Fluroscopy time(F-time), dose area product(DAP) and number of acquired images from each kind of procedure was checked. Non-vascular procedures showed low value, and vascular procedure showed high value in all procedures except in IVC filter. F-time was longest in EVAR, which showed also the highest DAP value of all procedures. DAP-rate showed high value in TACE. By this result, we attempt to establish standard guideline of radiation dose on patients in IVR procedure.

• Journal of the Korean Orthopaedic Association
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• v.56 no.6
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• pp.535-539
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• 2021

Vascular complications following a femoral fracture are rare but can result in serious issues. Several case studies have reported pseudoaneurysms occurring after direct trauma or the insertion of a proximal femoral nail in the case of a proximal femoral fracture. The authors encountered an 85-year-old patient treated with retrograde intramedullary nail fixation for a distal femur fracture and suffered a decrease in the hemoglobin level, swelling, and pain on the 9^th day after surgery. The authors initially attributed the temporary hematoma and pain to ordinary postoperative processes. On the 16^th day after surgery, a pseudoaneurysm originating from the descending branch of the lateral femoral convolutional artery was diagnosed and treated by percutaneous vascular embolization. After the procedure, the hemoglobin level increased, and the swelling and pain decreased.