• Progress in Medical Physics
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• v.21 no.3
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• pp.274-280
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• 2010

The purpose of this study was to analyze the effect of single-fraction stereotactic radiosurgery (SRS) for the treatment of 15 cases of cerebral arteriovenous malformations (AVMs). Between 2002 and 2009, of the 25 patients who had SRS for the treatment of cerebral AVM, 15 patients (6 men, 9 women) taken a digital subtraction angiography (DSA) over 12 months after SRS were included. We retrospectively evaluated the size, location, hemorrhage of nidus, angiographic changes on follow-up on the MR angiography and DSA, and clinical complications during follow-up periods. At a median follow-up of 24 months (range 12-89), complete obliteration of nidus was observed in all patients (100%) while residual draining veins was observed in 3 patients (20%). There was no clinical complication during the follow-up period except seizure in 1 patient. The mean nidus volume was 4.7cc (0.5~11.7 cc, SD 3.7 cc). The locations of nidus were in cerebral hemisphere in 11 patients, cerebellum in 2 patients, basal ganglia in 1 patient, and pons in 1 patient respectively. 9 cases were hemorrhagic, and 6 cases were non-hemorrhagic AVMs. The SRS with LINAC is a safe and effective treatment for cerebral AVMs when the follow up period is over 4 years. However, it is recommended to continue to follow up until the draining vein on arterial phase of follow up DSA disappears completely.

• Nuclear Medicine and Molecular Imaging
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• v.40 no.6
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• pp.316-321
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• 2006

Purpose: Differential diagnosis between arteriovenous (AVMs) aud non-arteriovenous malformations (nAVMs) is important in patients with congenital vascular malformations, because AVMs can cause hemodynamic alteration and require immediate treatment. We investigated whether transarterial lung perfusion scintigraphy (TLPS) was useful for the diagnosis and post-therapeutic evaluation of AVMs in extremities. Materials and Methods: Fifty-seven patients (M:F=26:31, $21{\pm}13$ yr, 9 upper and 48 lower extremities) suspected of congenital vascular malformations in extremities underwent TLPS using $^{99m}Tc-MAA$ before embolization/sclerotherapy. Dose-corrected shunt fraction (SF) was calculated from time-activity curve of the lung. Final diagnosis of AVMs was determined by angiography. in patients with AVMs, follow-up TLPS was done for post-therapeutic evaluation. Results: Sixteen patients (8 upper and 8 lower extremities) had AVMs, while the remaining 41 had nAVMs (1 upper and 40 lower extremities). The mean SF of AVMs on TLPS was significantly higher than that of nAVMs ($66.4{\pm}25.8%\;vs.\;2.8{\pm}4.3%$), p=0.003). The sensitivity, specificity, and accuracy of TLPS (cut-off of SF = 20.0%) in diagnosis of AVMs before treatment were 93.8% (15/16), 100% (41/41) and 98.2% (56/57), respectively. The follow-up TLPS and angiography for post-therapeutic evaluation showed concordant results in 13 of 16 patients (81.3%) with AVMs. The mean SF of TLPS was significantly decreased after embolization/sclerotherapy ($69.5{\pm}24.0%\;vs.\;41.0{\pm}34.7%$, p=0.01). Conclusion: TLPS provides hemodynamic information of AVMs in extremities semiquantitatively. Furthermore, the results of TLPS showed a high concordance rate with angiographic findings. Therefore, TLPS is useful for the diagnosis and post-therapeutic evaluation of AVMs in extremities.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.28 no.2
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• pp.135-137
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• 2017

We describe a case of venous malformation of pyriform sinus in 63 year-old patient, discovered incidentally. Venous malformation are the most common vascular malformations to arise in the head and neck. However venous malformation of the hypopharynx in the adult papulation are rare. The author performed successfully ethanol sclerotherapy for venous malformation of pyriform sinus, so we present the case with a review of the related literatures.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.25 no.2
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• pp.104-106
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• 2014

We describe a case of laryngeal venous malformation in 43 year-old patient, discovered incidentally. Laryngeal venous malformation is a comparatively rare condition in adults. It presents as a dark bluish mass that may cause bleeding, hoarseness or stridor, but he complained only mild throat discomfort. We found dark-bluish tumor on the right arytenoid area, and treated the lesion by Ethanol sclerotherapy. All lesions disappeared after one month without any complication. Sclerotherapy with Ethanol can be an easy and effective treatment for laryngeal venous malformations, so we present the case with a review of the related literatures.

• Tuberculosis and Respiratory Diseases
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• v.52 no.5
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• pp.545-549
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• 2002

A pulmonary arteriovenous fistula is an uncommon malformation. In pregnancy altered hemodynamics and hormones cause changes in a PAVM(pulmonary arteriovenous malformation) that predispose them to deterioration. Therefore, a PAVM can cause serious and life-threatening complications in pregnancy. Death often results from a cerebral abscess and a rupture of the malformation with a massive hemorrhage. Recently, we experienced a case of a multiple PAVM in pregnant 38 year old woman, which could not be observed in the old chest PA, 1 year ago. The PAVM was confirmed by CT and was angiography and treated by percutaneous embolization. The patient is suspected to have HHT (Hereditary hemorrhagic telangiectasia).

• Journal of the Korean Society of Radiology
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• v.82 no.4
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• pp.982-987
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• 2021

The coronary sinus (CS) is the venous drainage system of the heart. CS ostium atresia is a rarely seen cardiac malformation. Congenital atresia of the CS is usually found together with persistent left superior vena cava (LSVC) and other cardiac malformations. However, isolated congenital atresia of the CS is very rare. We present a rare case of isolated congenital atresia of the CS connecting the left atrium and coronary veins without persistent LSVC in a 58-year-old female.

• 대한두경부종양학회:학술대회논문집
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• 1989.11a
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• pp.10.3-12
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• 1989

• Neonatal Medicine
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• v.18 no.2
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• pp.404-408
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• 2011

Scimitar syndrome (SS) is a rare congenital anomaly characterized by hypoplasia of the right lung and partially anomalous pulmonary venous drainage to the inferior vena cava. The term scimitar derives from the shadow created by the anomalous pulmonary vein on chest X-ray that closely resembles that of a curved Turkish sword. It rarely presents as an isolated abnormality. Various cardiac and non-cardiac anomalies have been association with SS, such as right lung hypoplasia, dextroposition of the heart, hypoplasia of the right pulmonary artery, systemic arterial blood supply to the right lower lung from the infra-diaphragmatic aorta, and a secundum type of atrial septal defect. However, an imperforate anus has not been reported previously in association with SS. We describe the first case of infantile scimitar syndrome accompanied with an imperforate anus in a newborn who presented with tachypnea and right pulmonary atelectasis.

• 대한핵의학회:학술대회논문집
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• 1999.11a
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• pp.35.2-35.2
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• 1999

• Journal of Veterinary Clinics
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• v.32 no.2
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• pp.196-199
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• 2015

A 7-year-old intact female dachshund (Dog 1) and a 17-year-old intact male Yorkshire terrier (Dog 2) were presented for evaluation of mammary gland tumor and a regular checkup, respectively. Incidentally, segmental caudal vena cava aplasia was detected on CT images in both dogs. Absent postrenal segment (Dog 1) or discontinuation of caudal vena cava (Dog 2) were detected, but prerenal segment of caudal vena cava was continued to the dilated azygos vein. Segmental CVC aplasia should be considered when an abdominal vascular anomaly was evaluated with CT angiography in dogs.