Won Sang Chung

Hanyang University Medical Center, Sŏul, Seoul, South Korea

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Publications (12)15.37 Total impact

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    ABSTRACT: Congenital cystic adenomatoid malformation (CCAM) is an uncommon, nonhereditary anomaly caused by arrest of lung. Patients with CCAM may present with respiratory distress as newborns, or may remain asymptomatic until later in life. CCAM type I is rarely found in association with bronchial atresia (BA) in adults; we present such a case. CASE: A 54-year-old female presented with chronic cough and blood-tinged sputum. Physical examination and laboratory tests were unremarkable. Chest radiographs and a CT scan of the chest showed multiple large air-filled cysts consistent with a CCAM in the right lower lobe, and an oval-shaped opacity in the distal right middle lobal bronchus. Based on the radiologic findings, right middle lobectomy and a medial basal segmentectomy of the right lower lobe were performed via a thoracotomy. These lesions were consistent with Stocker's Type I CCAM and BA in the different lobes.
    Tuberculosis and respiratory diseases. 06/2012; 72(6):501-6.
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    ABSTRACT: We report a case of a postinfarction ventricular septal defect caused by an acute recurrent occlusion after the implantation of a covered stent, which was performed as a rescue procedure for the ruptured left anterior descending artery during a percutaneous coronary intervention. Although the emergent implantation of a covered stent for the ruptured coronary arteries such as the left main coronary artery or the origins of the left anterior descending artery can be performed during a percutaneous coronary intervention, and a coronary bypass surgery should be considered in order to decrease the risk of complete occlusion, thus providing a superior long term patency.
    The Korean journal of thoracic and cardiovascular surgery. 02/2012; 45(1):45-8.
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    ABSTRACT: Both mesothelial cyst in the omentum and omental herniation through the esophageal hiatus without abdominal visceral involvement are rare. We report a case of omental mesothelial cyst herniated to the thorax through the esophageal hiatus.
    Journal of thoracic imaging 08/2011; 26(3):W95-7. · 1.42 Impact Factor
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    ABSTRACT: CC This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creative-commons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Background: For staging primary lung cancer, integrated positron emission tomography/computed tomography (PET/ CT) imaging is popular. The purpose of this study was to evaluate the accuracy of PET/CT scanning in lymph no-dal staging of lung cancer. Material and Method: We studied 48 patients who had received CT, PET/CT and pul-monary resections due to primary non-small cell lung cancer in our hospital between January 2006 and August 2009. Mediastinal lymph nodes were classified as superior mediastinal nodes, aortic nodes, inferior mediastinal no-des, or N1 nodes. We compared the power of CT and PET/CT for diagnosing pulmonary lymph nodes for each of the four types of nodes. Result: PET/CT was more sensitive than CT for all groups except inferior mediastinal nodes. However, the differences were not significant (McNemar's test: superior mediastinal nodes, p=0.109; aortic nodes, p=1.000; inferior mediastinal nodes, p=0.625, N1 nodes, p=0.424). Conclusion: The accuracy of PET/CT is similar to that of CT alone for staging lymph nodes. The two imaging modalities might be used as complementary, cooperative tools. We expect that integrated PET/CT will be found to be significantly mmore sensitive after more trials are done and more data is accumulated.
    The Korean Journal of Thoracic and Cardiovascular Surgery. 12/2010; 43(6).
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    ABSTRACT: Pulmonary epithelial-myoepithelial carcinoma is a rare low-grade malignant neoplasm that has the characteristic histologic features, epithelial and myoepithelial differentiation, similar to the salivary gland counterpart. This tumor is thought to arise from bronchial submucosal glands distributed throughout the lower respiratory tract. We recently experienced a case of epithelial-myoepithelial carcinoma of the bronchus in a 61-year-old man. Computed tomography of his chest revealed an endobronchial mass in the bronchus of the left lower lobe. The lobectomy specimen showed a solitary endobronchial mass, measuring 2.3 cm in greatest diameter. Histologically, the tumor was composed of variable proportions of epithelial and myoepithelial cells. The epithelial cells represented an inner layer of duct-like structures and the outer clear cell layer was myoepithelial-type cells. The epithelial cells were positive for pancytokeratin and the clear myoepithelial cells were positive for vimentin, alpha-smooth muscle actin and S-100 protein. Finally our diagnosis was epithelial-myoepithelial carcinoma of the bronchus.
    Basic and Applied Pathology 06/2010; 3(3):101 - 104.
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    ABSTRACT: Parosteal lipoma is a rare benign tumor that is composed mainly of benign mature lipocytes, and it has an intimate association with the underlying periosteum of affected bone. Parosteal lipoma involving the rib is quite rare. We believe that only four cases have been previously reported in the English literature. Here we describe an exceedingly rare case of parosteal lipoma that developed in the right seventh rib, which presented in a 50-year-old man having a previous history of trauma at this site.
    The Annals of thoracic surgery 02/2009; 87(1):316-8. · 3.45 Impact Factor
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    Tuberculosis and Respiratory Diseases 01/2008; 65(3).
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    Tuberculosis and Respiratory Diseases 01/2008; 65(4).
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    ABSTRACT: Traumatic pulmonary pseudocysts or post-traumatic pneumatocoeles are a relatively rare-encountered condition occurring after trauma and an even rarer talked about subject. Most resolve within a few weeks, but if complicated by hematoma, may persist for months. This study intends to evaluate the resolution times of traumatic pulmonary pseudocysts and their clinical significance. We report a case analysis of 12 cases from Hanyang University Guri Hospital dating from July 1997 through October 2004. The overall mean time for complete resolution was 85.6 days. The mean time for resolution for the uncomplicated traumatic pulmonary pseudocysts was 25.3 days (n=6) and the mean time for resolution for the complicated (blood filled) traumatic pulmonary pseudocysts was 145.8 days (n=6). When resolution times were compared according to size, those less than 2 cm showed a mean resolution time of 23.6 days (n=5) and those greater than or equal to 2 cm showed a mean resolution time of 129.9 days (n=7). Comparisons between completely blood-filled pseudocysts and uncomplicated pseudocysts have shown statistically significant differences in resolution times. Statistical significance has also been found between pseudocysts of sizes less than 2 cm and those greater than or equal to 2 cm. Conservative treatment is generally the rule; close follow-up and symptomatic treatment are necessary.
    European Journal of Cardio-Thoracic Surgery 06/2006; 29(5):819-23. · 2.81 Impact Factor
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    ABSTRACT: Calcifying fibrous pseudotumor is an uncommon benign lesion that has unique histologic features. We report a case of calcifying fibrous pseudotumor of the pleura occurring in a 31-year-old woman. A computed tomographic scan revealed a pleural mass in the right anterior costophrenic angle. The excised mass was well circumscribed, nonencapsulated, solid, and firm. The tumor showed dense hyalinized collagenous tissue interspersed with spindle cells, psammomatous calcifications, and a predominantly lymphoplasmocytic infiltrate. Most spindle cells were diffusely positive for vimentin, focally positive for CD34, and negative for desmins, smooth muscle actin, S-100 protein, and anaplastic lymphoma kinase-1.
    The Annals of thoracic surgery 01/2005; 78(6):e87-8. · 3.45 Impact Factor
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    ABSTRACT: Telangiectatic pulmonary arteriovenous malformation is defined as a pulmonary arteriovenous malformation involving every segmental artery of at least one lobe of the lung. The authors report a case of telangiectatic pulmonary arteriovenous malformation in the left lower lobe of the lung.
    Journal of Thoracic Imaging 05/2003; 18(2):113-5. · 1.49 Impact Factor
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    American Journal of Roentgenology 04/2003; 180(3):862-3. · 2.74 Impact Factor