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  1. Article: An update on the role of bronchoscopy in the diagnosis of pulmonary disease.

    Ahn, June Hong

    Yeungnam University journal of medicine

    2020  Volume 37, Issue 4, Page(s) 253–261

    Abstract: Bronchoscopy has evolved over the past few decades and has been used by respiratory physicians to diagnose various airway and lung diseases. With the popularization of medical check-ups and growing interest in health, early diagnosis of lung diseases is ... ...

    Abstract Bronchoscopy has evolved over the past few decades and has been used by respiratory physicians to diagnose various airway and lung diseases. With the popularization of medical check-ups and growing interest in health, early diagnosis of lung diseases is essential. With the development of endobronchial ultrasound, ultrathin bronchoscopy, and electromagnetic navigational bronchoscopy, bronchoscopy has been able to widen its scope in diagnosing pulmonary diseases. In this review, we have described the brief history, role, and complications of bronchoscopy used in diagnosing pulmonary lesions, from simple flexible bronchoscopy to bronchoscopy combined with several up-to-date technologies.
    Language English
    Publishing date 2020-08-28
    Publishing country Korea (South)
    Document type Journal Article
    ISSN 2384-0293
    ISSN 2384-0293
    DOI 10.12701/yujm.2020.00584
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Successful osimertinib retreatment after extremely early onset severe pneumonitis in first-line treatment of lung adenocarcinoma.

    Ahn, June Hong

    Thoracic cancer

    2020  Volume 11, Issue 9, Page(s) 2713–2716

    Abstract: Drug-induced pneumonitis is rare, and can result in death. Here, we present a report of a patient with adenocarcinoma harboring EGFR exon 19 deletion mutation treated with osimertinib as first-line treatment. After six days of treatment, extremely early ... ...

    Abstract Drug-induced pneumonitis is rare, and can result in death. Here, we present a report of a patient with adenocarcinoma harboring EGFR exon 19 deletion mutation treated with osimertinib as first-line treatment. After six days of treatment, extremely early onset severe pneumonitis was diagnosed. Discontinuation of osimertinib as well as administration of corticosteroid, and retreatment with osimertinib were successful. This case report highlights that extremely early onset severe pneumonitis can occur after osimertinib administration, and retreatment of osimertinib may be a useful treatment option after resolution of pneumonitis.
    MeSH term(s) Acrylamides/adverse effects ; Acrylamides/pharmacology ; Acrylamides/therapeutic use ; Adenocarcinoma of Lung/complications ; Adenocarcinoma of Lung/drug therapy ; Adenocarcinoma of Lung/pathology ; Aniline Compounds/adverse effects ; Aniline Compounds/pharmacology ; Aniline Compounds/therapeutic use ; Female ; Humans ; Lung Neoplasms/complications ; Lung Neoplasms/drug therapy ; Lung Neoplasms/pathology ; Middle Aged ; Pneumonia/drug therapy
    Chemical Substances Acrylamides ; Aniline Compounds ; osimertinib (3C06JJ0Z2O)
    Language English
    Publishing date 2020-07-15
    Publishing country Singapore
    Document type Case Reports ; Journal Article
    ZDB-ID 2625856-0
    ISSN 1759-7714 ; 1759-7706
    ISSN (online) 1759-7714
    ISSN 1759-7706
    DOI 10.1111/1759-7714.13565
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Delayed sarcoidosis onset mimicking mediastinal lymphoma recurrence after complete remission of diffuse large B cell lymphoma: A case report.

    Ahn, June Hong / Jang, Min Hye

    Thoracic cancer

    2021  Volume 12, Issue 8, Page(s) 1231–1233

    Abstract: Sarcoidosis-lymphoma syndrome describes a pathological state wherein both sarcoidosis and lymphoma are present. Sarcoidosis and lymphoma may occur concurrently, or sarcoidosis may precede lymphoma. There are few reports which have previously described ... ...

    Abstract Sarcoidosis-lymphoma syndrome describes a pathological state wherein both sarcoidosis and lymphoma are present. Sarcoidosis and lymphoma may occur concurrently, or sarcoidosis may precede lymphoma. There are few reports which have previously described the temporal progression from lymphoma to sarcoidosis. Here, we present a patient with stage II diffuse large B-cell lymphoma in the right breast. The patient achieved complete remission after chemotherapy. Five years after remission, the patient visited our clinic with newly developed enlarged mediastinal lymph nodes; lymphoma recurrence was suspected. However, mediastinal lymph node biopsy showed numerous noncaseating granulomas with no evidence of malignancy in the mediastinal lymph nodes. Consequently, a diagnosis of sarcoidosis was made. This case report highlights the need for pathological confirmation following biopsy when recurrence of lymphoma is suspected.
    MeSH term(s) Female ; Humans ; Lymphoma, Large B-Cell, Diffuse/complications ; Middle Aged ; Neoplasm Recurrence, Local ; Sarcoidosis/etiology ; Sarcoidosis/pathology
    Language English
    Publishing date 2021-02-21
    Publishing country Singapore
    Document type Case Reports ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2625856-0
    ISSN 1759-7714 ; 1759-7706
    ISSN (online) 1759-7714
    ISSN 1759-7706
    DOI 10.1111/1759-7714.13885
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Endobronchial Ultrasound Using Guide Sheath-Guided Transbronchial Lung Biopsy in Ground-Glass Opacity Pulmonary Lesions without Fluoroscopic Guidance.

    Park, Jongsoo / Kim, Changwoon / Jang, Jong Geol / Lee, Seok Soo / Hong, Kyung Soo / Ahn, June Hong

    Cancers

    2024  Volume 16, Issue 6

    Abstract: Diagnosing ground-glass opacity (GGO) pulmonary lesions poses challenges. This study evaluates the utility of radial probe endobronchial ultrasound-guided transbronchial lung biopsy (RP-EBUS-TBLB) in diagnosing GGO pulmonary lesions. A total of 1651 RP- ... ...

    Abstract Diagnosing ground-glass opacity (GGO) pulmonary lesions poses challenges. This study evaluates the utility of radial probe endobronchial ultrasound-guided transbronchial lung biopsy (RP-EBUS-TBLB) in diagnosing GGO pulmonary lesions. A total of 1651 RP-EBUS procedures were performed during the study period. This study analyzed 115 GGO lesions. The EBUS visualization yield was 80.1%. Of 115 lesions, 69 (60%) were successfully diagnosed. The average size of diagnosed lesions was significantly larger than that of undiagnosed lesions (21.9 ± 7.3 vs. 17.1 ± 6.6 mm,
    Language English
    Publishing date 2024-03-19
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2527080-1
    ISSN 2072-6694
    ISSN 2072-6694
    DOI 10.3390/cancers16061203
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: The Author's Response: Prognostic Accuracy of the SIRS, qSOFA, and NEWS for Early Detection of Clinical Deterioration in SARS-CoV-2 Infected Patients.

    Jang, Jong Geol / Ahn, June Hong

    Journal of Korean medical science

    2020  Volume 35, Issue 30, Page(s) e275

    MeSH term(s) Betacoronavirus ; COVID-19 ; Clinical Deterioration ; Coronavirus Infections ; Humans ; Organ Dysfunction Scores ; Pandemics ; Pneumonia, Viral ; Prognosis ; SARS-CoV-2 ; Systemic Inflammatory Response Syndrome
    Keywords covid19
    Language English
    Publishing date 2020-08-03
    Publishing country Korea (South)
    Document type Letter ; Comment
    ZDB-ID 639262-3
    ISSN 1598-6357 ; 1011-8934
    ISSN (online) 1598-6357
    ISSN 1011-8934
    DOI 10.3346/jkms.2020.35.e275
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Reasons and Risk Factors for Readmission Following Hospitalization for Community-acquired Pneumonia in South Korea.

    Jang, Jong Geol / Ahn, June Hong

    Tuberculosis and respiratory diseases

    2020  Volume 83, Issue 2, Page(s) 147–156

    Abstract: Background: Limited studies have been performed to assess readmission following hospitalization for community-acquired pneumonia (CAP) in an Asian population. We evaluated the rates, reasons, and risk factors for 30-day readmission following ... ...

    Abstract Background: Limited studies have been performed to assess readmission following hospitalization for community-acquired pneumonia (CAP) in an Asian population. We evaluated the rates, reasons, and risk factors for 30-day readmission following hospitalization for CAP in the general adult population of Korea.
    Methods: We performed a retrospective observational study of 1,021 patients with CAP hospitalized at Yeungnam University from March 2012 to February 2014. The primary end point was all-cause hospital readmission within 30 days following discharge after the initial hospitalization. Hospital readmission was classified as pneumonia-related or pneumonia-unrelated readmission.
    Results: During the study period, 862 patients who survived to hospital discharge were eligible for inclusion and among them 72 (8.4%) were rehospitalized within 30 days. In the multivariable analysis, pneumonia-related readmission was associated with para/hemiplegia, malignancy, pneumonia severity index class ≥4 and clinical instability ≥1 at hospital discharge. Comorbidities such as chronic lung disease and chronic kidney disease, treatment failure, and decompensation of comorbidities were associated with the pneumonia-unrelated 30-day readmission rate.
    Conclusion: Rehospitalizations within 30 days following discharge were frequent among patients with CAP. The risk factors for pneumonia-related and -unrelated readmission were different. Aspiration prevention, discharge at the optimal time, and close monitoring of comorbidities may reduce the frequency of readmission among patients with CAP.
    Language English
    Publishing date 2020-03-10
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2161256-0
    ISSN 1738-3536 ; 0378-0066
    ISSN 1738-3536 ; 0378-0066
    DOI 10.4046/trd.2019.0073
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Brain FDG PET for visualizing the relation between impaired lung function and cognitive decline in lung cancer: a preliminary study.

    Son, Seung Hyun / Ahn, June Hong / Shin, Kyeong Cheol / Kim, Hae Won / Kong, Eunjung

    Nuclear medicine communications

    2023  Volume 44, Issue 6, Page(s) 488–494

    Abstract: Objective: Impaired lung function is associated with an increased risk for cognitive decline. F-18 fluorodeoxyglucose (FDG) PET is a well-known neurodegenerative biomarker for dementia. We investigated the association between lung and brain function ... ...

    Abstract Objective: Impaired lung function is associated with an increased risk for cognitive decline. F-18 fluorodeoxyglucose (FDG) PET is a well-known neurodegenerative biomarker for dementia. We investigated the association between lung and brain function using FDG PET in patients with lung cancer.
    Methods: A random sub-sample of 102 patients with lung cancer and without a self-reported history of neuropsychiatric disorders were recruited and underwent both lung function tests and FDG PET scans before treatment. Lung function was analyzed as the percentage predicted value (% pred) of forced vital capacity (FVC) and forced expiratory volume in the first second (FEV1). FDG uptake was measured as standardized uptake values (SUVs) in the frontal, parietal, temporal, and occipital cortices and cognition-related regions. Regional SUV ratios (SUVRs) were calculated by dividing the SUV in each region by the whole-brain SUV and were then evaluated against lung function indices and clinical variables.
    Results: After excluding five patients with brain metastases, 97 patients were included in the final analysis (mean age, 67.7 ± 10.3 years). Mean FVC and mean FEV1 were 80.0% ± 15.4% and 77.6% ± 17.8%, respectively. Both FVC and FEV1 were positively correlated with SUVRs in all brain regions after adjusting the data for clinical variables. The degree of decrease in SUVRs related to lung function was not significantly different between cognition-related regions and other regions.
    Conclusion: Impaired lung function was associated with decreased glucose metabolism in all regions of the brain, indicating that cognitive decline related to decreased glucose metabolism may be due to reduced perfusion.
    MeSH term(s) Humans ; Middle Aged ; Aged ; Fluorodeoxyglucose F18/metabolism ; Lung Neoplasms/complications ; Lung Neoplasms/diagnostic imaging ; Lung Neoplasms/drug therapy ; Positron-Emission Tomography ; Brain/metabolism ; Lung/pathology ; Cognitive Dysfunction/diagnostic imaging ; Cognitive Dysfunction/metabolism ; Glucose/metabolism ; Radiopharmaceuticals/therapeutic use
    Chemical Substances Fluorodeoxyglucose F18 (0Z5B2CJX4D) ; Glucose (IY9XDZ35W2) ; Radiopharmaceuticals
    Language English
    Publishing date 2023-03-21
    Publishing country England
    Document type Journal Article
    ZDB-ID 758141-5
    ISSN 1473-5628 ; 0143-3636
    ISSN (online) 1473-5628
    ISSN 0143-3636
    DOI 10.1097/MNM.0000000000001686
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Low diffusion capacity predicts poor prognosis in extensive stage small cell lung cancer: a single-center analysis of 10 years.

    Kim, Jee Seon / Kim, Eun Ji / Jang, Jong Geol / Hong, Kyung Soo / Ahn, June Hong

    Journal of cancer research and clinical oncology

    2023  Volume 149, Issue 10, Page(s) 7275–7283

    Abstract: Background: Poor pulmonary function and chronic obstructive pulmonary disease (COPD) are associated with poorer overall survival (OS) in non-small-cell lung cancer (NSCLC) patients. Few studies have investigated the association between pulmonary ... ...

    Abstract Background: Poor pulmonary function and chronic obstructive pulmonary disease (COPD) are associated with poorer overall survival (OS) in non-small-cell lung cancer (NSCLC) patients. Few studies have investigated the association between pulmonary function and OS in small-cell lung cancer (SCLC) patients. We compared the clinical characteristics of extensive disease SCLC (ED-SCLC) with or without moderately impaired diffusion capacity for carbon monoxide (DLco) and investigated the factors associated with survival in ED-SCLC patients.
    Methods: This retrospective single-center study was performed between January 2011 and December 2020. Of the 307 SCLC patients who received cancer therapy during the study, 142 with ED-SCLC were analyzed. The patients were divided into DLco < 60% group and DLco ≥ 60% groups. OS and predictors of poor OS were analyzed.
    Results: The median OS of the 142 ED-SCLC patients was 9.3 months and the median age was 68 years. In total, 129 (90.8%) patients had a history of smoking, and 60 (42.3%) had COPD. Thirty-five (24.6%) patients were assigned to the DLco < 60% group. Multivariate analysis revealed that DLco < 60% (odds ratio [OR], 1.609; 95% confidence interval [CI], 1.062-2.437; P = 0.025), number of metastases (OR, 1.488; 95% CI, 1.262-1.756; P < 0.001), and < 4 cycles of first-line chemotherapy (OR, 3.793; 95% CI, 2.530-5.686; P < 0.001) were associated with poor OS. Forty (28.2%) patients received < 4 cycles of first-line chemotherapy; the most common reason for this was death (n = 22, 55%) from grade 4 febrile neutropenia (n = 15), infection (n = 5), or massive hemoptysis (n = 2). The DLco < 60% group had a shorter median OS than the DLco ≥ 60% group (10.6 ± 0.8 vs. 4.9 ± 0.9 months, P = 0.003).
    Conclusions: In this study, approximately one quarter of the ED-SCLC patients had DLco < 60%. Low DLco (but not forced expiratory volume in 1 s or forced vital capacity), a large number of metastases, and < 4 cycles of first-line chemotherapy were independent risk factors for poor survival outcomes in patients with ED-SCLC.
    MeSH term(s) Humans ; Aged ; Small Cell Lung Carcinoma/drug therapy ; Lung Neoplasms/pathology ; Carcinoma, Non-Small-Cell Lung/drug therapy ; Carcinoma, Non-Small-Cell Lung/complications ; Retrospective Studies ; Pulmonary Disease, Chronic Obstructive ; Prognosis
    Language English
    Publishing date 2023-03-13
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 134792-5
    ISSN 1432-1335 ; 0171-5216 ; 0084-5353 ; 0943-9382
    ISSN (online) 1432-1335
    ISSN 0171-5216 ; 0084-5353 ; 0943-9382
    DOI 10.1007/s00432-023-04686-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Incidence and Prognostic Factors of Respiratory Viral Infections in Severe Acute Exacerbation of Chronic Obstructive Pulmonary Disease.

    Jang, Jong Geol / Ahn, June Hong / Jin, Hyun Jung

    International journal of chronic obstructive pulmonary disease

    2021  Volume 16, Page(s) 1265–1273

    Abstract: Purpose: Severe acute exacerbations of chronic obstructive pulmonary disease (AECOPD) that require hospitalization and emergency department visits are associated with considerable morbidity and mortality. Respiratory viral infection is an important ... ...

    Abstract Purpose: Severe acute exacerbations of chronic obstructive pulmonary disease (AECOPD) that require hospitalization and emergency department visits are associated with considerable morbidity and mortality. Respiratory viral infection is an important cause of severe AECOPD. We evaluated the incidence and prognostic factors of viral infection in severe AECOPD.
    Patients and methods: We performed a retrospective study of 262 cases of severe AECOPD in 192 patients who required hospitalization and emergency department visits at a tertiary teaching hospital in Daegu, Korea. A multiplex polymerase chain reaction panel using a nasopharyngeal swab sample was performed to detect viral infection.
    Results: Viral infection was detected in 108 events (41.2%) from 96 patients. The most common virus was rhinovirus/enterovirus (27.5%), followed by influenza virus (22.5%), respiratory syncytial virus (13.3%), parainfluenza virus (12.5%), coronavirus (12.5%), metapneumovirus (7.5%), and adenovirus (4.2%). Virus-positive exacerbations, compared to virus-negative exacerbations, had a higher frequency of symptoms of rhinopharyngitis, higher neutrophil count and C-reactive protein (CRP) level, and lower eosinophil count. Multivariate analysis demonstrated that elevated CRP levels (odds ratio [OR], 2.76; 95% confidence interval [CI], 1.24-6.15), symptoms of rhinopharyngitis (OR, 1.98; 95% CI, 1.03-3.78), low eosinophil count (OR, 1.74; 95% CI, 1.03-2.92), and inhaled corticosteroid (ICS) use (OR, 1.70; 95% CI 1.04-2.80) were associated with viral infection in severe AECOPD.
    Conclusion: The incidence of viral infection in severe AECOPD was 41.2%, and the most commonly detected virus was rhinovirus/enterovirus. Increased CRP level, symptoms of rhinopharyngitis, low eosinophil count, and use of ICS were associated with viral infection in severe AECOPD.
    MeSH term(s) Acute Disease ; Humans ; Incidence ; Prognosis ; Pulmonary Disease, Chronic Obstructive/diagnosis ; Pulmonary Disease, Chronic Obstructive/epidemiology ; Republic of Korea/epidemiology ; Respiratory Tract Infections/diagnosis ; Respiratory Tract Infections/epidemiology ; Retrospective Studies ; Virus Diseases/diagnosis ; Virus Diseases/epidemiology
    Language English
    Publishing date 2021-05-07
    Publishing country New Zealand
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1178-2005
    ISSN (online) 1178-2005
    DOI 10.2147/COPD.S306916
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Initial Experience in CT-Guided Percutaneous Transthoracic Needle Biopsy of Lung Lesions Performed by a Pulmonologist.

    Ahn, June Hong / Jang, Jong Geol

    Journal of clinical medicine

    2019  Volume 8, Issue 6

    Abstract: In the diagnosis of lung lesions, computed tomography (CT)-guided percutaneous transthoracic needle biopsy (PTNB) has a high diagnostic yield and a low complication rate. The procedure is usually performed by interventional radiologists, but the ... ...

    Abstract In the diagnosis of lung lesions, computed tomography (CT)-guided percutaneous transthoracic needle biopsy (PTNB) has a high diagnostic yield and a low complication rate. The procedure is usually performed by interventional radiologists, but the diagnostic yield and safety of CT-guided PTNB when performed by pulmonologists have not been evaluated. A retrospective study of 239 patients who underwent CT-guided PTNB at Yeungnam University Hospital between March 2017 and April 2018 was conducted. A pulmonologist performed the procedure using a co-axial technique with a 20-gauge needle. Then diagnostic yield and safety were assessed. The overall sensitivity, specificity, positive predictive value, and negative predictive value for the diagnosis of malignancy were 96.1% (171/178), 100% (46/46), 100% (171/171), and 86.8% (46/53), respectively. The diagnostic accuracy was 96.9% (217/224) and the overall complication rate was 33.1% (82/248). Pneumothorax, hemoptysis, and hemothorax occurred in 27.0% (67/248), 5.2% (13/248), and 0.8% (2/248) of the patients, respectively. Univariate analyses revealed that pneumothorax requiring chest tube insertion was a significant risk factor (odds ratio, 25.0;
    Language English
    Publishing date 2019-06-08
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662592-1
    ISSN 2077-0383
    ISSN 2077-0383
    DOI 10.3390/jcm8060821
    Database MEDical Literature Analysis and Retrieval System OnLINE

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