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S-363 Chemical pleurodesis using mistletoe extracts via spray catheter during medical thoracoscopy
( Sun Hack Lee ),( Jung Seop Eom ),( Tae Hwa Kim ),( Kyu Min Lee ),( Ji Yeon Shin ),( Han Na Lee ),( Bo Hye Song ),( Yong Ki Sim ),( Geewon Lee ),( Jeong Ha Mok ),( Hyo Yeong Ahn ),( Min Ki Lee ) 대한내과학회 2016 대한내과학회 추계학술발표논문집 Vol.2016 No.1
We present three cases of successful chemical pleurodesis with a liquid solution of mistletoe extract using a spray catheter during medical thoracoscopy. The medical thoracoscopy was performed in all presented cases to remove pleural effusion and conduct chemical pleurodesis to manage symptomatic malignant pleural effusion. A spray catheter was used to instill the mistletoe extract evenly into the pleural cavity, and there were no pleurodesis-related complications. Respiratory symptoms caused by pleural effusion improved after pleurodesis, and successful pleurodesis was maintained for more than 3 months after medical thoracoscopy in all three patients. Lee and Colt reported that instilling lidocaine via a spray catheter is effective for pain control before chemical pleurodesis during medical thoracoscopy. Using a spray catheter in the same way, we performed pleurodesis with a mistletoe extract via a spray catheter in three patients with MPE. A complete response, defined as no pleural effusion within 4 weeks after the last pleurodesis6, was achieved in all three patients. Several studies have used liquid mistletoe extract via a chest tube for chemical pleurodesis. Stumpf et al. reported that the overall response to mistletoe extract pleurodesis was 72% in 20 patients with MPE. Mistletoe extract, which was previously verified as an effective sclerosant for pleurodesis via a chest tube, could be evenly sprayed into the pleural cavity during thoracoscopy using a spray catheter. Distributing the sclerosant evenly into the pleural cavity with a spray catheter may lead to successful pleurodesis, particularly in patients who underwent medical thoracoscopy. In conclusion, We found that instilling the mistletoe extract using a spray catheter was an effective pleurodesis method and could possibly be performed as an alternative to talc poudrage.
Lee, Kyu Min,Jang, Sun Mi,Oh, Seo Young,Kim, Do Young,Lee, Geewon,Kim, Ahrong,Kim, Min Ji,Kim, Tae Hwa,Park, Joon Woo,Lee, Kwangha,Kim, Ki Uk,Lee, Min Ki,Eom, Jung Seop The Korean Academy of Tuberculosis and Respiratory 2015 Tuberculosis and Respiratory Diseases Vol.78 No.4
We presented a case of unusual endobronchial inflammatory polyps as a complication following endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) in a patient with tuberculous lymphadenitis. EBUSTBNA of the right hilar lymph node was performed in a 29-year-old, previously healthy man. The patient was confirmed with tuberculous lymphadenitis and received antituberculosis medication over the course of 6 months. Chest computed tomography, after 6 months of antituberculosis therapy following the EBUS-TBNA showed nodular bronchial wall thickening of the right main bronchus. Histological and microbiological examinations revealed inflammatory polyps. After 7 months, the inflammatory polyps regressed almost completely without need for removal.
( Kyu Min Lee ),( Sun Mi Jang ),( Seo Young Oh ),( Do Young Kim ),( Geewon Lee ),( Ahrong Kim ),( Min Ji Kim ),( Tae Hwa Kim ),( Joon Woo Park ),( Kwangha Lee ),( Ki Uk Kim ),( Min Ki Lee ),( Jung Seo 대한결핵 및 호흡기학회 2015 Tuberculosis and Respiratory Diseases Vol.78 No.4
We presented a case of unusual endobronchial inflammatory polyps as a complication following endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) in a patient with tuberculous lymphadenitis. EBUSTBNA of the right hilar lymph node was performed in a 29-year-old, previously healthy man. The patient was confirmed with tuberculous lymphadenitis and received antituberculosis medication over the course of 6 months. Chest computed tomography, after 6 months of antituberculosis therapy following the EBUS-TBNA showed nodular bronchial wall thickening of the right main bronchus. Histological and microbiological examinations revealed inflammatory polyps. After 7 months, the inflammatory polyps regressed almost completely without need for removal.
Lee, Geewon,I, Hoseok,Kim, Seong-Jang,Jeong, Yeon Joo,Kim, In Joo,Pak, Kyoungjune,Park, Do Yun,Kim, Gwang Ha Society of Nuclear Medicine 2014 The Journal of nuclear medicine Vol.55 No.8
<P>This was a study to compare the diagnostic efficacies of endoscopic ultrasonography (EUS), CT, PET/MR imaging, and PET/CT for the preoperative local and regional staging of esophageal cancer, with postoperative pathologic stage used as the reference standard. <B>Methods:</B> During 1 y, 19 patients with resectable esophageal cancer were enrolled and underwent preoperative EUS, CT, PET/CT, and PET/MR imaging. A chest radiologist and nuclear medicine physician retrospectively reviewed the images and assigned tumor and lymph node stages according to the seventh version of the TNM system and the American Joint Committee on Cancer staging system. Four patients who were treated nonsurgically were excluded from data analysis. The efficacies of EUS, CT, PET/CT, and PET/MR imaging were compared. <B>Results:</B> Primary tumors were correctly staged in 13 (86.7%), 10 (66.7%), and 5 (33.3%) patients at EUS, PET/MR imaging, and CT, respectively (<I>P</I> value ranging from 0.021 to 0.375). The accuracy of determining T1 lesions was 86.7%, 80.0%, and 46.7% for EUS, PET/MR imaging, and CT, respectively. For distinguishing T3 lesions, the accuracy was 93.3% for EUS and 86.7% for both PET/MR imaging and CT. For lymph node staging, the accuracy was 83.3%, 75.0%, 66.7%, and 50.0% for PET/MR imaging, EUS, PET/CT, and CT, respectively. In addition, area-under-the-curve values were 0.800, 0.700, 0.629, and 0.543 for PET/MR imaging, EUS, PET/CT, and CT, respectively. <B>Conclusion:</B> PET/MR imaging demonstrated acceptable accuracy for T staging compared with EUS and, although not statistically significant, even higher accuracy than EUS and PET/CT for prediction of N staging. With adjustments in protocols, PET/MR imaging may provide an important role in preoperative esophageal cancer staging in the future.</P>
CT Radiomics in Thoracic Oncology: Technique and Clinical Applications
Lee, Geewon,Bak, So Hyeon,Lee, Ho Yun The Korea Society of Nuclear Medicine 2018 핵의학 분자영상 Vol.52 No.2
Precision medicine offers better treatment options and improved survival for cancer patients based on individual variability. As the success of precision medicine depends on robust biomarkers, the requirement for improved imaging biomarkers that reflect tumor biology has grown exponentially. Radiomics, the field of study in which high-throughput data are generated and large amounts of advanced quantitative features are extracted from medical images, has shown great potential as a source of quantitative biomarkers in the field of oncology. Radiomics provides quantitative information about the morphology, texture, and intratumoral heterogeneity of the tumor itself as well as features related to pulmonary function. Hence, radiomics data can be used to build descriptive and predictive clinical models that relate imaging characteristics to tumor biology phenotypes. In this review, we describe the workflow of CT radiomics, types of CT radiomics, and its clinical application in thoracic oncology.
Lee Jimin,Choo Ki Seok,Jeong Yeon Joo,Lee Geewon,Hwang Minhee,Abraham Maria Roselle,Lee Ji Won 대한영상의학회 2023 Korean Journal of Radiology Vol.24 No.6
Objective: There is increasing recognition that left atrial (LA) strain can be a prognostic marker of various cardiac diseases. However, its prognostic value in acute myocarditis remains unclear. Therefore, this study aimed to evaluate whether cardiovascular magnetic resonance (CMR)-derived parameters of LA strain can predict outcomes in patients with acute myocarditis. Materials and Methods: We retrospectively analyzed the data of 47 consecutive patients (44.2 ± 18.3 years; 29 males) with acute myocarditis who underwent CMR in 13.5 ± 9.7 days (range, 0–31 days) of symptom onset. Various parameters, including feature-tracked CMR-derived LA strain, were measured using CMR. The composite endpoints included cardiac death, heart transplantation, implantable cardioverter-defibrillator or pacemaker implantation, rehospitalization following a cardiac event, atrial fibrillation, or embolic stroke. The Cox regression analysis was performed to identify associations between the variables derived from CMR and the composite endpoints. Results: After a median follow-up of 37 months, 20 of the 47 (42.6%) patients experienced the composite events. In the multivariable Cox regression analysis, LA reservoir and conduit strains were independent predictors of the composite endpoints, with an adjusted hazard ratio per 1% increase of 0.90 (95% confidence interval [CI], 0.84–0.96; P = 0.002) and 0.91 (95% CI, 0.84–0.98; P = 0.013), respectively. Conclusion: LA reservoir and conduit strains derived from CMR are independent predictors of adverse clinical outcomes in patients with acute myocarditis.
Lee, Geewon,Lee, Ho Yun,Park, Hyunjin,Schiebler, Mark L.,van Beek, Edwin J.R.,Ohno, Yoshiharu,Seo, Joon Beom,Leung, Ann Elsevier 2017 European journal of radiology Vol.86 No.-
<P><B>Abstract</B></P> <P>With the development of functional imaging modalities we now have the ability to study the microenvironment of lung cancer and its genomic instability. <I>Radiomics</I> is defined as the use of automated or semi-automated post-processing and analysis of large amounts of quantitative imaging features that can be derived from medical images. The automated generation of these analytical features helps to quantify a number of variables in the imaging assessment of lung malignancy. These imaging features include: tumor spatial complexity, elucidation of the tumor genomic heterogeneity and composition, subregional identification in terms of tumor viability or aggressiveness, and response to chemotherapy and/or radiation. Therefore, a radiomic approach can help to reveal unique information about tumor behavior. Currently available radiomic features can be divided into four major classes: (a) morphological, (b) statistical, (c) regional, and (d) model-based. Each category yields quantitative parameters that reflect specific aspects of a tumor. The major challenge is to integrate radiomic data with clinical, pathological, and genomic information to decode the different types of tissue biology. There are many currently available radiomic studies on lung cancer for which there is a need to summarize the current state of the art.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Radiomics is the post-processing and analysis of large amounts of quantitative imaging features that can be derived from medical images. </LI> <LI> Radiomics features can reflect the spatial complexity, genomic heterogeneity, and subregional identification of lung cancer. </LI> <LI> Currently available radiomic features can be divided into four major categories. </LI> <LI> The major challenge is to integrate radiomic data with clinical, pathological, and genomic information. </LI> </UL> </P>
Hoon Kwon,Yeon Joo Jeong,Geewon Lee,Minhee Hwang,Jin You Kim,Nam Kyung Lee,Ji Won Lee 대한영상의학회 2024 대한영상의학회지 Vol.85 No.3
A pulmonary artery periadventitial hematoma is a rare complication of a Stanford type A intramural hematoma. As the proximal ascending aorta and pulmonary artery share a common adventitial layer, extravasated blood from the intramural hematoma in the ascending thoracic aorta may extend to beneath the adventitia of the pulmonary artery. The authors describe a case involving a 66-year-old male with acute chest pain who presented with a pulmonary artery periadventitial hematoma associated with a Stanford type A intramural hematoma.
Imaging Phenotyping Using Radiomics to Predict Micropapillary Pattern within Lung Adenocarcinoma
Song, So Hee,Park, Hyunjin,Lee, Geewon,Lee, Ho Yun,Sohn, Insuk,Kim, Hye Seung,Lee, Seung Hak,Jeong, Ji Yun,Kim, Jhingook,Lee, Kyung Soo,Shim, Young Mog Elsevier 2017 Journal of thoracic oncology Vol.12 No.4