Chronic Traumatic Glass Foreign Body Removal from the Lung through a Direct Parenchymal Incision

Traumatic intrapulmonary glass foreign bodies that are missed on an initial examination can migrate and lead to severe complications. Here, we present a rare case of a traumatic intrapulmonary glass foreign body surgically removed by a direct pulmonary incision, which preserved the pulmonary parenchyma and avoided severe complications caused by migration.

Ipsilateral Hyperhidrosis: Atypical Symptom of Small Lung Adenocarcinoma Evaluated by ¹⁸F-FDG PET-CT / 대한핵의학회잡지

A 45-year-old male visited our clinic due to right palmar anhidrosis and contralateral hyperhidrosis. Chest computed tomography (CT) showed a solitary pulmonary nodule with mediastinal lymph node enlargement, but a cause for atypical palmar anhidrosis was not identified. Subsequent fluorine-18-fluorodeoxyglucose (18F-FDG) positron emission tomography/computed (PET/CT) revealed a localized pleural metastasis at the right apex with direct invasion of the paravertebral sympathetic chain. The pleural metastasis, which was not seen on chest CT, evoked ipsilateral anhidrosis independent of a mass effect or direct invasion by the primary lung tumor. 18F-FDG PET/CT can be helpful in identifying the cause of atypical symptoms in patient with small sized lung cancer.

Ipsilateral Hyperhidrosis: Atypical Symptom of Small Lung Adenocarcinoma Evaluated by ¹⁸F-FDG PET-CT / 대한핵의학회잡지

A 45-year-old male visited our clinic due to right palmar anhidrosis and contralateral hyperhidrosis. Chest computed tomography (CT) showed a solitary pulmonary nodule with mediastinal lymph node enlargement, but a cause for atypical palmar anhidrosis was not identified. Subsequent fluorine-18-fluorodeoxyglucose (18F-FDG) positron emission tomography/computed (PET/CT) revealed a localized pleural metastasis at the right apex with direct invasion of the paravertebral sympathetic chain. The pleural metastasis, which was not seen on chest CT, evoked ipsilateral anhidrosis independent of a mass effect or direct invasion by the primary lung tumor. 18F-FDG PET/CT can be helpful in identifying the cause of atypical symptoms in patient with small sized lung cancer.

Psychological Problems of Pneumothorax According to Resilience, Stress, and Post-Traumatic Stress

OBJECTIVE: The aims of the study were to investigate psychological distress in pneumothorax patients. METHODS: A cohort study was performed in 101 patients with spontaneous pneumothorax. They were divided into three groups: (A) under 19 years old, (B) those of an intermediate age, and (C) over 45 years old. General well-being [Psychological Wellbeing Index-Short Form (PWI-SF)], traumatic event [Impact of Event Scale (IES)], and resilience [Life Orientation Test-Revised (LOT-R)] were assessed. RESULTS: There were 35 patients in Group A, 51 in B, and 15 in C. The mean length of hospital stay was five days in all patients. The overall recurrence rate after surgery was 8%. All patients were under severe stress and reported an average PWI-SF score of 39. The IES score was 27, which did not meet the criteria for post-traumatic stress disorder but was higher in Group C than in the other groups (p=0.02). Age and operation were significant factors for a high IES, but age was the only significant factor according to multivariate analysis. CONCLUSION: Pneumothorax patients may be at high risk for severe stress. Moreover, post-traumatic stress was higher in elderly patients. Actions to reduce the psychological problems in these patients are required.

Primary Pulmonary Amyloidosis with Mediastinal Lymphadenopathy

We report a case of inadvertent hoarseness after surgery for primary pulmonary amyloidosis. A 55-year-old male was transferred to our facility due to a lung mass. Chest computed tomography revealed a solitary pulmonary nodule. Positron emission tomography-computed tomography showed fluorodeoxyglucose uptake in the main mass and in the mediastinal lymph nodes. To confirm the pathology of the mass, wedge resection and thorough lymph node dissection were performed via video-assisted thoracic surgery (VATS). No complications except for hoarseness were observed; hoarseness developed soon after surgery and lasted for 3 months. The main mass was diagnosed as amyloidosis, but this was not found in the lymph nodes. In conclusion, VATS wedge resection for peripheral amyloidosis is a feasible and safe procedure. However, mediastinal lymph node dissection is not recommended unless there is evidence of a clear benefit.

Diaphragmatic Hernia after Transhiatal Esophagectomy for Esophageal Cancer

Diaphragmatic hernia was found in a patient who had undergone transhiatal esophagectomy for early esophageal cancer. Chest X-ray was not helpful, but abdominal or chest computed tomography was useful for accurate diagnosis. Primary repair through thoracotomy was performed and was found to be feasible and effective. However, long-term follow-up is required because hernia recurrence is common.

Acute Aortic Dissection in Pregnancy with the Marfan Syndrome

Acute aortic dissection (AAD) during pregnancy can be fatal to both the pregnant mother and the baby, particularly in patients with the Marfan syndrome. We report a case of the modified Bentall procedure in surgery for AAD in a 31-year-old pregnant woman at 24 weeks of gestation with the Marfan syndrome. The patient recovered well after the operation, but unfortunately, the fetus could not be saved.

Mediastinal Paraganglioma: Complete Resection Using Video-Assisted Thoracoscopic Surgery

Mediastinal paragangliomas are very rare neuroendocrine tumors. Complete resection is the standard treatment of a paraganglioma because of the tumor's potential malignancy and poor response to chemo- or radiotherapy. However, the highly vascular nature of the tumor and its characteristic anatomic location make complete resection difficult. We report a case of an anterior mediastinal paraganglioma, which was incidentally found on a chest computed tomography scan for chronic cough work-up of a 55-year-old woman. Complete resection was accomplished using video-assisted thoracoscopic surgery, and the patient recovered without any complications.

Localized Thymic Amyloidosis Presenting with Myasthenia Gravis: Case Report

A mediastinal mass was incidentally found on chest radiography in a 46-yr-old woman who had had myasthenia gravis (MG) for 2 months. Computed tomography revealed a 4-cm in size, well-defined, and lobulating mass with nodular calcification that was located in the thymus. Microscopically, the mass consisted of diffuse amorphous eosinophilic materials. These deposits exhibited apple-green birefringence under polarized light microscopy after Congo red staining. Immunohistochemical analysis revealed that they were positive for both kappa and lambda light chains and negative for amyloid A. A diagnosis of localized primary thymic amyloidosis was finally made. After thymectomy, the symptoms of MG were controlled with reduced corticosteroid requirements. Localized thymic amyloidosis associated with MG has not been reported to date.

Clinical and radiological findings in community-acquired pneumonia: A comparison between viral and bacterial infection / 동물의과학연구지

Effective treatment for community-acquired pneumonia (CAP) requires administration of appropriate empirical therapy based on etiologic, clinical, and radiological features. However, in Korea, CAP is poorly characterized, and data on viral CAP are particularly sparse. Therefore, improper use of antibiotics is common, and is detrimental the potential for development of bacterial. Thus, we investigated clinical and radiological findings for discrimination of viral CAP from bacterial CAP. Etiologic, clinical, and radiological data from 467 patients with CAP at Chungbuk National University Hospital from October 2010 to September 2011 were analyzed retrospectively. Viruses were identified in 23 cases (11.4%); the influenza virus A was the most common virus detected (N=18, 25.4%), followed by the respiratory syncytial virus A (N=14, 17.9%). Bacteria were identified in 48 cases (23.8%); Streptococcus-pneumonia was the most common (N=24, 25.5%), followed by Staphylococcus aureus (N=20, 21.3%). Depending on hospitalization time, the following significant differences were observed between viral and bacterial CAP: on admission, (1) high fever (> or = 38.5degrees C), (2) purulent sputum, (3) white blood cell count, (4) C-reactive protein levels, (5) and bilateral lung involvement on chest X-ray were higher in bacterial CAP; and at discharge, (1) duration of high fever and (2) radiologic improvement within three days were higher in viral CAP. Regarding seasonal patterns, both viruses and bacteria have been identified with relative frequency in the winter season. This study described the etiological, clinical, and radiological findings of viral and bacterial CAP. Conduct of additional large-scale, prospective investigations will be required in order to improve the appropriate treatment of CAP.

The diagnostic efficacy and safety of endobronchial ultrasound-guided transbronchial needle aspiration as an initial diagnostic tool

BACKGROUND/AIMS: Real-time, convex probe endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) is used for the staging of malignant mediastinal lymph nodes. We evaluated the diagnostic efficacy and safety of EBUS-TBNA when used as an initial diagnostic tool. METHODS: We retrospectively studied 56 patients who underwent EBUS-TBNA as an initial diagnostic tool between August 2010 and December 2011. Procedure purpose were classified into four categories: 1) intrathoracic masses adjacent to the central airway; 2) enlarged lymph nodes for concurrent diagnosis and staging in suspected malignancy; 3) enlarged lymph nodes in suspected malignancy cases with inability to perform percutaneous core needle biopsy (PCNB); and 4) solely mediastinal masses/lymph nodes in lieu of mediastinoscopy. RESULTS: The diagnostic accuracy of EBUS-TBNA regardless of procedure purpose was calculated to be 83.9%. Furthermore, the diagnostic accuracy of malignant disease was significantly higher than benign disease (93.9% vs. 70.6%, p < 0.001). The diagnostic accuracy of EBUS-TBNA for each disease is as follows: tuberculosis, 50%; sarcoidosis, 60%; aspergillosis, 100%; lung abscess, 100%; lung cancer, 93%; and lymphoma, 100%. There were minor complications in seven patients during the EBUS-TBNA procedure. The complications included mild hypoxia and bleeding. CONCLUSIONS: In conclusion, EBUS-TBNA is a useful initial diagnostic tool for both benign and malignant diseases. EBUS-TBAN is also a very safe procedure and less invasive compared to mediastinoscopy or PCNB.

Activation of Akt/protein kinase B mediates the protective effects of mechanical stretching against myocardial ischemia-reperfusion injury

Akt/protein kinase B is a well-known cell survival factor and activated by many stimuli including mechanical stretching. Therefore, we evaluated the cardioprotective effect of a brief mechanical stretching of rat hearts and determined whether activation of Akt through phosphatidylinositol 3-kinase (PI3K) is involved in stretch-induced cardioprotection (SIC). Stretch preconditioning reduced infarct size and improved post-ischemic cardiac function compared to the control group. Phosphorylation of Akt and its downstream substrate, GSK-3beta, was increased by mechanical stretching and completely blocked by wortmannin, a PI3K inhibitor. Treatment with lithium or SB216763 (GSK-3beta inhibitors) before ischemia induction mimicked the protective effects of SIC on rat heart. Gadolinium (Gd3+), a blocker of stretch-activated ion channels (SACs), inhibited the stretch-induced phosphorylation of Akt and GSK-3beta. Furthermore, SIC was abrogated by wortmannin and Gd3+. In vivo stretching induced by an aorto-caval shunt increased Akt phosphorylation and reduced myocardial infarction; these effects were diminished by wortmannin and Gd3+ pretreatment. Our results showed that mechanical stretching can provide cardioprotection against ischemia-reperfusion injury. Additionally, the activation of Akt, which might be regulated by SACs and the PI3K pathway, plays an important role in SIC.

A Case of Cholethorax Developed by Unknown Cause / 결핵및호흡기질환

Cholethorax is a bilious pleural effusion caused by a pleurobiliary fistula or leakage of bile into the pleural space. Most cases of cholethorax arise from a complication of abdominal trauma, hepatobiliary infection, or invasive procedures or surgery of hepatobiliary system. However, we experienced a case of a patient with cholethorax of unknown origin. There was no evidence of pleurobiliary fistula or leakage of bile from the hepatobiliary system although we examined the patient with various diagnostic tools including chest and abdominal computed tomography, endoscopic retrograde cholangiopancreatography, tubography, bronchofiberscopy, hepatobiliary scintigraphy and video-assisted thoracoscopic surgery. Herein we report a case of cholethorax for which the specific cause was not identified. The patient was improved by percutaneous drainage of pleural bile.

Infection with Mycobacterium Tuberculosis Complicating an Intralobar Pulmonary Sequestration: A case report / 대한흉부외과학회지

Pulmonary sequestration is a relatively rare malformation. Infection with common pyogenes is a frequent complication in this disease. We report here on a case of intralobar sequestration that was infected with Mycobacterium tuberculosis in the absence of any other site of tuberculous infection. A 40-year man presented with a small amount of hemoptysis, and the man had been previously diagnosed with bronchiectasis 3 years ago. Chest computerized tomography revealed bronchiectasis with pneumonia in the left lower lobe and there was a large feeding artery from the thoracic aorta. A lobectomy of the left lower lobe was conducted via thoracotomy and the final pathologic examination confirmed pulmonary tuberculosis limited to the intralobar sequestrated lung. The patient underwent antituberculous chemotherapy from the postoperative 7th day and he was discharged without any adverse event.

Post-Traumatic Occlusion of the Proximal Subclavian Artery Without Clavicle and First Rib Fracture

Subclavian artery occlusion after blunt trauma is an extremely rare injury. This has been attributed to its wellprotected location deep in the scalene triangle, bounded by the first rib and clavicle. A case of post-traumatic occlusion of the subclavian artery with clavicle fracture was reported by Sodhi et al in 2006 and in Korea was reported by Han et al in 2001. We believe that is the first report of post-traumatic occlusion of the subclavian artery without clavicle and first rib fracture in Korea.

Histomorphological Comparison of the Coronary Artery and Available Graft Conduits / 대한흉부외과학회지

BACKGROUND: The histomorphological properties of the left anterior desecending artery (LAD), the left internal thoracic arteries (LITA), the radial arteries (RA) and the intercostal arteries (ICA) were studied for their use as a conduit for coronary artery bypass grafting (CABG), and we compared them with each other. MATERIAL AND METHOD: All the vessels were harvested from nineteen cadavers (17 males and 2 females). The mid-portion of the LAD, the mid-portion of the LITA, the distal RA and the mid-portion of the 5th ICA were obtained. All of them were stained with hematoxylin-eosin and with Van Gieson's elastin stain. The morphological characteristics were examined and the thicknesses of the intima and media (I/M ratio: the intima to media ratio) were compared using one-way ANOVA tests. RESULT: The mean age of the cadavers was 61.5+/-9.6 years. The LITA and ICA were elastic arteries, and the LAD and RA were muscular arteries. The I/M ratio showed statistically significant differences: 0.07+/-0.03 in the LITA, 0.16+/-0.11 in the ICA, 0.45+/-0.29 in the RA and 0.93+/-0.52 in the LAD, respectively. CONCLUSION: This study showed that the degrees of intimal hyperplasia of the CA and the various conduits for CABG were different significantly. The ICA was found to have relatively favorable characteristics as a coronary bypass conduit, but its suitability for clinical use is a challenging issue.

Clinial Analysis of Surgical Management for Descending Necrotizing Mediastinitis / 대한흉부외과학회지

BACKGROUND: Descending necrotizing mediastinitis (DNM) is a life-threatening cervico-mediastinal infection extending from the oropharynx or periodontal space. We reviewed clinical outcomes of DNM patients that underwent surgical management. MATERIAL AND METHOD: We analyzed the demographic and surgical data from 8 patients (6 males and 2 females) that underwent surgical management for DNM between August 2003 and August 2007. RESULT: The mean age was 56.6+/-12.3 (34~72) years. Types of DNM were I (n=2), IIA (n=1), and IIB (n=5), based on the classification system of Endo et al. Four patients were septic at the time of operation. The infectious organism was identified in three cases and turned out to be Streptococcus. ICU stay was 24.3+/-17.9 (3~58) days, and hospital stay was 49.1+/-33.8 (20~125) days. There were two deaths (25%), both of which were due to multi-organ failure. CONCLUSION: Despite aggressive surgical drainage and appropriate medical management, DNM still had a high mortality rate. Early diagnosis and prompt surgical intervention are key to DNM management. In addition, transcervical drainage should be used in limited disease only.

Endobronchial Metastasis from Renal Cell Carcinoma: A case report / 대한흉부외과학회지

Lung parenchyma is a common organ for metastases of extrathoracic tumors, but endobronchial metastasis is very rare. In this report, we present a case of endobronchial metastases from renal cell carcinoma (RCC), and this was managed by performing operative resection. A 63-year-old man presented with frequent dry cough; he had previously undergone left nephrectomy and postoperative chemotherapy for grade 2 RCC eight years ago. Computed tomography and bronchoscopy showed an endobronchial tumor from the left lower lobe bronchus to the second carina, and this mass was diagnosed as a necrotic tissue with chronic inflammation at biopsy. During the operation, the mass was revealed to be a metastatic renal cell carcinoma on the frozen section diagnosis and there was no mucosal invasion on the resection margin of the left lower lobe bronchus. We performed lobectomy of the left lower lobe with systemic dissection of the mediastinal lymph nodes. The final histopathologic diagnosis of the endobrochial mass was metastatic RCC and any mediastinal lymph node metastasis was not found. The patient was discharged on postoperative day 10 without any postoperative complications.

Surgical Treatment for Rupture of the Right Common Iliac Artery Caused byTranscatheter Balloon Aortic Valvuloplasty in a Baby with Congenital Aortic Stenosis: A case report / 대한흉부외과학회지

Transcatheter interventions are widely used for diagnosis and treatment of congenital heart disease. Complications associated with transcatheter interventions are uncommon. However, when they occur they are most often self- limited. Rarely, however, serious catheter related complications occur that may require emergent surgical intervention. In this case, the right common iliac artery was disrupted during transcatheter balloon valvuloplasty during the treatment of congenital aortic stenosis in a 2-week-old baby. After immediate surgical intervention with bleeding control using two balloon catheters the baby did well. Here we report this case and review the medical literature.

DNA Microarray Analysis of Transcriptional Responses in HepG2 Cells with Induced Paraquat Resistance

PURPOSE: To date, paraquat poisoning has almost universally resulted in unfavorable outcomes, and it has become a big issue in clinical toxicology. Current efforts to overcome its toxicity have focused on drugs with anti-oxidant capacity such as ascorbic acid in order to combat over-production of reactive oxygen species (ROS) by paraquat radicals, which are mainly induced by NADPH-cytochrome P450 reductase. Unfortunately, this strategy of treatment has not yielded satisfactory results. In search of a new approach to cope with PQ toxicity, we developed an in vitro culture model of cells resistant to lethal doses of PQ, and we then investigated resistance mechanisms using DNA microarray technology, a tool for simultaneously measuring a number of gene expression changes. METHODS: This experiment was conducted in vitro using the hepatocelluar carcinoma cell line (HepG2) to assay xenobitotics metabolism. We induced resistant of these cells to up to 100 uM PQ by treating with escalating doses of PQ for about 5 months. Cytotoxicity was studied using the MTT method, and optical density was measured at 540 nm using an ELISA reader. We examined morphological changes in cells after drug treatment using an inverted microscope, and we investigated gene expression profiles in control and resistant cells by use of DNA microarray. RESULTS: Results of MTT assays indicated that resistant cells showed relatively high survivals against a 100 mM dose, but that the control group had zero percents of survival at a 1 mM dose. In the comparing gene expression levels between the control group and the resistant group, 6,717 genes found to be differentially expressed. In the analysis of anti-apoptosis genes in particular, the resistant group showed more expression of genes with anti-apoptotic functions than did the control group. In examining the expression of cytochrome P450 genes related to xenobiotic metabolism and PQ radical induction, expression of the cytochrome P450 1B1 gene was significantly higher in the resistant group than in the control group. CONCLUSION: Although cytochrome P450 is known to be responsible for redox cycling of PQ as an electron transferor, this study suggest that up-regulation of the cytochrome P450 1B1 gene can corelate with PQ resistance. Therefore, induction of cytochrome P450 1B1 can be a new therapeutic approach to reduce PQ toxicity through actual PQ degradation, rather than simply through neutralization of ROS.