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  1. Article ; Online: Predictive value of chest computed tomography for axillary lymph node metastasis in patients with breast cancer

    Chohee Kim / Myung Jin Chung / Semin Chong

    Precision and Future Medicine, Vol 5, Iss 4, Pp 190-

    A retrospective cohort study

    2021  Volume 198

    Abstract: Purpose This study aimed to evaluate the predictive value of preoperative chest computed tomography (CT) for axillary lymph node (ALN) metastasis in patients with breast cancer. Methods CT features of ALNs were retrospectively reviewed in 212 patients ... ...

    Abstract Purpose This study aimed to evaluate the predictive value of preoperative chest computed tomography (CT) for axillary lymph node (ALN) metastasis in patients with breast cancer. Methods CT features of ALNs were retrospectively reviewed in 212 patients with breast cancer who underwent preoperative chest CT examination and ALN dissection. Primary tumor size and CT characteristics of ALNs (cortical thickness, cortical shape, the presence or absence of contrast enhancement of ALNs, and the presence or absence of perinodal infiltration) were recorded and analyzed. A nomogram was developed to visualize the associations between the predictors and each ALN status endpoint. Results Of 212 patients, 95 (44.8%) had ALN metastasis. Primary tumor size and CT characteristics of ALNs were identified as predictors of ALN metastasis. The nomogram comprising primary tumor size and cortical shape was a good validation model for predicting ALN metastasis. The sensitivity, specificity, and accuracy of the nomogram for predicting ALN metastasis were 88.4%, 79.5%, and 83.5%, respectively. Conclusion Using preoperative chest CT scans, a nomogram combining the cortical shape of ALNs with the primary tumor size showed good performance in predicting ALN metastasis.
    Keywords axilla ; breast neoplasms ; lymph nodes ; lymphatic metastasis ; tomography ; x-ray computed ; Medicine ; R
    Subject code 610
    Language English
    Publishing date 2021-12-01T00:00:00Z
    Publisher Sungkyunkwan University School of Medi
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Completeness of Reporting of Systematic Reviews and Meta-Analysis of Diagnostic Test Accuracy (DTA) of Radiological Articles Based on the PRISMA-DTA Reporting Guideline.

    Kim, Wook / Kim, Jun Ho / Cha, Yoon Ki / Chong, Semin / Kim, Tae Jung

    Academic radiology

    2022  Volume 30, Issue 2, Page(s) 258–275

    Abstract: Rationale and objectives: This study evaluated the completeness of systematic reviews and meta-analyses in radiology using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses for Diagnostic Test Accuracy (PRISMA-DTA) and PRISMA-DTA ... ...

    Abstract Rationale and objectives: This study evaluated the completeness of systematic reviews and meta-analyses in radiology using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses for Diagnostic Test Accuracy (PRISMA-DTA) and PRISMA-DTA for Abstracts guidelines between articles published before and those published after the issuance of the guideline and identify areas that have been poorly reported.
    Materials and methods: PubMed were searched for systematic reviews on DTA with or without meta-analyses published in general radiology journals between January 1, 2016 and December 31, 2020. The identified articles were assessed for completeness of reporting according to the PRISMA-DTA. Subgroup analyses were performed for association of completeness of reporting with multiple cofactors.
    Results: The search identified 183 reviews from 12 journals. The mean numbers (standard deviation) of reported PRISMA-DTA and PRISMA-DTA for Abstracts items in the full texts and abstracts were 18.45 (2.02) and 5.66 (1.28), respectively. Subgroup analysis showed that compared to the corresponding reference groups, a higher mean number of reported PRISMA-DTA items was associated with publication during July 2018-December 2020 [(17.82 (2.01) vs 18.89 (1.91); p = 0.034), citation of the PRISMA-DTA [17.62 (1.86) vs 20.27 (2.02); p < 0.001], and inclusion of supplementary materials [17.64 (2) vs 19.09 (1.8); p < 0.001] on multiple-linear regression analysis.
    Conclusion: Completeness of reporting with respect to the PRISMA-DTA and PRISMA-DTA for Abstracts has improved modestly since the publication of the PRISMA-DTA guideline; however, increasing awareness of the specific weakness provides the chance for completeness improvement.
    MeSH term(s) Humans ; Radiology ; Radiography ; Diagnostic Tests, Routine
    Language English
    Publishing date 2022-04-29
    Publishing country United States
    Document type Meta-Analysis ; Journal Article
    ZDB-ID 1355509-1
    ISSN 1878-4046 ; 1076-6332
    ISSN (online) 1878-4046
    ISSN 1076-6332
    DOI 10.1016/j.acra.2022.03.028
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: A heterozygous mutation in UBE2H in a patient with developmental delay leads to an aberrant brain development in zebrafish.

    Shin, Unbeom / Choi, Yeonsong / Ko, Hwa Soo / Myung, Kyungjae / Lee, Semin / Cheon, Chong Kun / Lee, Yoonsung

    Human genomics

    2023  Volume 17, Issue 1, Page(s) 44

    Abstract: Background: Ubiquitin-related rare diseases are generally characterized by developmental delays and mental retardation, but the exact incidence or prevalence is not yet fully understood. The clinical application of next-generation sequencing for ... ...

    Abstract Background: Ubiquitin-related rare diseases are generally characterized by developmental delays and mental retardation, but the exact incidence or prevalence is not yet fully understood. The clinical application of next-generation sequencing for pediatric seizures and developmental delay of unknown causes has become common in studies aimed at identification of a causal gene in patients with ubiquitin-related rare diseases that cannot be diagnosed using conventional fluorescence in situ hybridization or chromosome microarray tests. Our study aimed to investigate the effects of ubiquitin-proteasome system on ultra-rare neurodevelopmental diseases, through functional identification of candidate genes and variants.
    Methods: In our present work, we carried out genome analysis of a patient with clinical phenotypes of developmental delay and intractable convulsion, to identify causal mutations. Further characterization of the candidate gene was performed using zebrafish, through gene knockdown approaches. Transcriptomic analysis using whole embryos of zebrafish knockdown morphants and additional functional studies identified downstream pathways of the candidate gene affecting neurogenesis.
    Results: Through trio-based whole-genome sequencing analysis, we identified a de novo missense variant of the ubiquitin system-related gene UBE2H (c.449C>T; p.Thr150Met) in the proband. Using zebrafish, we found that Ube2h is required for normal brain development. Differential gene expression analysis revealed activation of the ATM-p53 signaling pathway in the absence of Ube2h. Moreover, depletion of ube2h led to induction of apoptosis, specifically in the differentiated neural cells. Finally, we found that a missense mutation in zebrafish, ube2h (c.449C>T; p.Thr150Met), which mimics a variant identified in a patient with neurodevelopmental defects, causes aberrant Ube2h function in zebrafish embryos.
    Conclusion: A de novo heterozygous variant in the UBE2H c.449C>T (p.Thr150Met) has been identified in a pediatric patient with global developmental delay and UBE2H is essential for normal neurogenesis in the brain.
    MeSH term(s) Animals ; Humans ; Brain/metabolism ; Developmental Disabilities ; In Situ Hybridization, Fluorescence ; Mutation ; Mutation, Missense/genetics ; Rare Diseases ; Ubiquitin-Conjugating Enzymes/genetics ; Ubiquitins/genetics ; Ubiquitins/metabolism ; Zebrafish/genetics ; Zebrafish/metabolism ; Zebrafish Proteins/genetics
    Chemical Substances UBE2H protein, human (EC 2.3.2.23) ; Ubiquitin-Conjugating Enzymes (EC 2.3.2.23) ; Ubiquitins ; Zebrafish Proteins
    Language English
    Publishing date 2023-05-19
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2147618-4
    ISSN 1479-7364 ; 1479-7364
    ISSN (online) 1479-7364
    ISSN 1479-7364
    DOI 10.1186/s40246-023-00491-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Pleural Localized Malignant Mesothelioma Mimicking a Benign Solitary Fibrous Tumor of the Pleura on Chest Computed Tomography

    Hwi Ryong Park / Semin Chong / Mi Kyung Kim

    대한영상의학회지, Vol 76, Iss 6, Pp 429-

    A Case Report

    2017  Volume 433

    Abstract: Pleural malignant mesotheliomas arise from mesothelial cells in the pleura. They are characterized as diffuse or localized malignant mesotheliomas (LMM). Diffuse malignant mesotheliomas spread diffusely along pleural surfaces, while LMM are well- ... ...

    Abstract Pleural malignant mesotheliomas arise from mesothelial cells in the pleura. They are characterized as diffuse or localized malignant mesotheliomas (LMM). Diffuse malignant mesotheliomas spread diffusely along pleural surfaces, while LMM are well-circumscribed nodular lesions with no gross or microscopic diffuse pleural spreading. Therefore, LMM can be radiologically confused with solitary fibrous tumors of the pleura (SFTP), which commonly presents as a solitary, well-demarcated peripheral mass abutting the pleural surface upon the completion of a computed tomography (CT). Therefore, this study reports on a 63-year-old female patient with a pathologically-proven LMM of the pleura, mimicking a benign SFTP upon having a chest CT. Although LMM is extremely rare, FDG PET/CT should be recommended for adequate tumor management in order to avoid misdiagnosing the tumor as a benign SFTP when an interfissural or pleural-based mass is seen on the chest CT.
    Keywords pleura ; mesothelioma ; malignant ; solitary fibrous tumors ; tomography ; x-ray computed ; Medical physics. Medical radiology. Nuclear medicine ; R895-920
    Language English
    Publishing date 2017-06-01T00:00:00Z
    Publisher The Korean Society of Radiology
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Quantitative image analysis using chest computed tomography in the evaluation of lymph node involvement in pulmonary sarcoidosis and tuberculosis.

    Lee, Chang Un / Chong, Semin / Choi, Hye Won / Choi, Jae Chol

    PloS one

    2018  Volume 13, Issue 11, Page(s) e0207959

    Abstract: Purpose: To evaluate the feasibility of quantitative analysis of chest computed tomography (CT) scans for the assessment of lymph node (LN) involvement in patients with pulmonary tuberculosis and sarcoidosis.: Methods: In 47 patients with ... ...

    Abstract Purpose: To evaluate the feasibility of quantitative analysis of chest computed tomography (CT) scans for the assessment of lymph node (LN) involvement in patients with pulmonary tuberculosis and sarcoidosis.
    Methods: In 47 patients with tuberculosis (n = 26) or sarcoidosis (n = 21), 115 lymph nodes (tuberculous, 55; sarcoid, 60) were visually analyzed on chest CT scans according to their size, location, attenuation and shape. Each node was manually segmented using image analysis tool, which was quantitatively analyzed using the following variables: Feret's diameter, perimeter, area, circularity, mean grey value (Mean), standard deviation (SD) of grey value, minimum grey value (Min), maximum grey value (Max), median grey value (Median), skewness, kurtosis, and net enhancement. We statistically analyzed the visual and quantitative CT features of tuberculous and sarcoid LNs.
    Results: In visual CT analysis, the mean node size in sarcoidosis was significantly greater than that in tuberculosis. There were no statistical differences between tuberculous and sarcoid LNs in terms of location and shape. Central low attenuation and peripheral rim enhancement were more frequently observed in tuberculous LNs than in the sarcoid ones. In quantitative CT analysis, there were significant differences in the values of the Feret's diameter, perimeter, area, circularity, mean grey value, SD, median, skewness, and kurtosis between tuberculous and sarcoid LNs.
    Conclusions: Quantitative CT analysis using CT parameters with pixel-by-pixel measurements can help to differentiate of tuberculous and sarcoid LNs.
    MeSH term(s) Adult ; Aged ; Diagnosis, Differential ; Feasibility Studies ; Female ; Humans ; Image Interpretation, Computer-Assisted/methods ; Lymph Nodes/diagnostic imaging ; Lymphatic Diseases/diagnostic imaging ; Male ; Middle Aged ; Retrospective Studies ; Sarcoidosis, Pulmonary/diagnostic imaging ; Thorax/diagnostic imaging ; Tomography, X-Ray Computed/methods ; Tuberculosis/diagnostic imaging
    Language English
    Publishing date 2018-11-26
    Publishing country United States
    Document type Evaluation Studies ; Journal Article
    ISSN 1932-6203
    ISSN (online) 1932-6203
    DOI 10.1371/journal.pone.0207959
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Going Full TeRM: The Seminal Role of Tissue-Resident Macrophages in Organ Remodeling during Pregnancy and Lactation.

    Wu, Yixuan / Teh, Ye Chean / Chong, Shu Zhen

    Journal of immunology (Baltimore, Md. : 1950)

    2024  Volume 212, Issue 4, Page(s) 513–521

    Abstract: During pregnancy and lactation, the uterus and mammary glands undergo remarkable structural changes to perform their critical reproductive functions before reverting to their original dormant state upon childbirth and weaning, respectively. Underlying ... ...

    Abstract During pregnancy and lactation, the uterus and mammary glands undergo remarkable structural changes to perform their critical reproductive functions before reverting to their original dormant state upon childbirth and weaning, respectively. Underlying this incredible plasticity are complex remodeling processes that rely on coordinated decisions at both the cellular and tissue-subunit levels. With their exceptional versatility, tissue-resident macrophages play a variety of supporting roles in these organs during each stage of development, ranging from maintaining immune homeostasis to facilitating tissue remodeling, although much remains to be discovered about the identity and regulation of individual macrophage subsets. In this study, we review the increasingly appreciated contributions of these immune cells to the reproductive process and speculate on future lines of inquiry. Deepening our understanding of their interactions with the parenchymal or stromal populations in their respective niches may reveal new strategies to ameliorate complications in pregnancy and breastfeeding, thereby improving maternal health and well-being.
    MeSH term(s) Pregnancy ; Female ; Humans ; Animals ; Breast Feeding ; Lactation/physiology ; Macrophages ; Weaning ; Uterus ; Mammary Glands, Animal/physiology
    Language English
    Publishing date 2024-02-05
    Publishing country United States
    Document type Review ; Journal Article
    ZDB-ID 3056-9
    ISSN 1550-6606 ; 0022-1767 ; 1048-3233 ; 1047-7381
    ISSN (online) 1550-6606
    ISSN 0022-1767 ; 1048-3233 ; 1047-7381
    DOI 10.4049/jimmunol.2300560
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Pulmonary cryptococcosis manifesting as diffuse air-space consolidations in an immunocompetent patient.

    Choi, Hye Won / Chong, Semin / Kim, Mi Kyung / Park, In Won

    Journal of thoracic disease

    2017  Volume 9, Issue 2, Page(s) E138–E141

    Abstract: Pulmonary cryptococcosis is an opportunity infection commonly occurred in the immunocompromised patients. However pulmonary cryptococcosis in the immunocompetent was reported up to 35% and these cases tend to show confined and localized radiologic ... ...

    Abstract Pulmonary cryptococcosis is an opportunity infection commonly occurred in the immunocompromised patients. However pulmonary cryptococcosis in the immunocompetent was reported up to 35% and these cases tend to show confined and localized radiologic findings than in immunocompromised patients. To our knowledge, extensive air-space consolidations have not frequently occurred in the immunocompetent patient. Therefore, in this case, we report a rare case of a 73-year-old woman who was diagnosed with pulmonary cryptococcosis, manifesting as diffuse air-space consolidations even though normal immune status. Thus, the possibility of pulmonary cryptococcosis should be considered when a patient with a normal immune status presents without respiratory symptoms are accompanied by consolidation on imaging.
    Language English
    Publishing date 2017-01-01
    Publishing country China
    Document type Case Reports
    ZDB-ID 2573571-8
    ISSN 2077-6624 ; 2072-1439
    ISSN (online) 2077-6624
    ISSN 2072-1439
    DOI 10.21037/jtd.2017.02.11
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Assessment of spatial tumor heterogeneity using CT growth patterns estimated by tumor tracking on 3D CT volumetry of multiple pulmonary metastatic nodules.

    Jeongin Yoo / Semin Chong / Changwon Lim / Miyoung Heo / In Gyu Hwang

    PLoS ONE, Vol 14, Iss 8, p e

    2019  Volume 0220550

    Abstract: Purpose Our purpose was to assess the differences in growth rates of multiple pulmonary metastatic nodules using three-dimensional (3D) computed tomography (CT) volumetry and propose a concept of CT spatial tumor heterogeneity. Materials and methods We ... ...

    Abstract Purpose Our purpose was to assess the differences in growth rates of multiple pulmonary metastatic nodules using three-dimensional (3D) computed tomography (CT) volumetry and propose a concept of CT spatial tumor heterogeneity. Materials and methods We manually measured the largest diameter of metastatic pulmonary nodules on chest CT scans, and calculated the 3D maximum diameter and the volume using a semi-automated 3D CT volumetry of each nodule. The tumor response was assessed according to the revised RECIST 1.1. We defined a nodule as an outlier based on 1.5 times growth during follow-up. The CT spatial tumor heterogeneity was statistically analyzed by the "minimum combination t-test method" devised in our study. Results On manual measurement, the tumor response category was stable disease (SD) in all 10 patients. Of them, total 155 metastatic nodules (4-52 nodules per patient) were segmented using the 3D CT volumetry. In the 3D maximum diameter, 9 patients had SD except for one patient with partial response in the two selected nodules; for the volume, all 10 patients were SD. For the 3D maximum diameter, six patients had at least one outlier; whereas five patients had the outlier on the volume measurement. Six patients were proven to have overall CT spatial tumor heterogeneity. Conclusions The spatial tumor heterogeneity determined in a CT parametric approach could be statistically assessed. In patients with CT spatial heterogeneity, tumors with different growth rates may be neglected when the nodules are assessed according to the current guideline.
    Keywords Medicine ; R ; Science ; Q
    Subject code 610
    Language English
    Publishing date 2019-01-01T00:00:00Z
    Publisher Public Library of Science (PLoS)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article ; Online: Assessment of spatial tumor heterogeneity using CT growth patterns estimated by tumor tracking on 3D CT volumetry of multiple pulmonary metastatic nodules.

    Yoo, Jeongin / Chong, Semin / Lim, Changwon / Heo, Miyoung / Hwang, In Gyu

    PloS one

    2019  Volume 14, Issue 8, Page(s) e0220550

    Abstract: Purpose: Our purpose was to assess the differences in growth rates of multiple pulmonary metastatic nodules using three-dimensional (3D) computed tomography (CT) volumetry and propose a concept of CT spatial tumor heterogeneity.: Materials and methods! ...

    Abstract Purpose: Our purpose was to assess the differences in growth rates of multiple pulmonary metastatic nodules using three-dimensional (3D) computed tomography (CT) volumetry and propose a concept of CT spatial tumor heterogeneity.
    Materials and methods: We manually measured the largest diameter of metastatic pulmonary nodules on chest CT scans, and calculated the 3D maximum diameter and the volume using a semi-automated 3D CT volumetry of each nodule. The tumor response was assessed according to the revised RECIST 1.1. We defined a nodule as an outlier based on 1.5 times growth during follow-up. The CT spatial tumor heterogeneity was statistically analyzed by the "minimum combination t-test method" devised in our study.
    Results: On manual measurement, the tumor response category was stable disease (SD) in all 10 patients. Of them, total 155 metastatic nodules (4-52 nodules per patient) were segmented using the 3D CT volumetry. In the 3D maximum diameter, 9 patients had SD except for one patient with partial response in the two selected nodules; for the volume, all 10 patients were SD. For the 3D maximum diameter, six patients had at least one outlier; whereas five patients had the outlier on the volume measurement. Six patients were proven to have overall CT spatial tumor heterogeneity.
    Conclusions: The spatial tumor heterogeneity determined in a CT parametric approach could be statistically assessed. In patients with CT spatial heterogeneity, tumors with different growth rates may be neglected when the nodules are assessed according to the current guideline.
    MeSH term(s) Aged ; Cone-Beam Computed Tomography ; Female ; Humans ; Imaging, Three-Dimensional ; Lung/diagnostic imaging ; Lung/pathology ; Lung Neoplasms/diagnostic imaging ; Lung Neoplasms/pathology ; Male ; Middle Aged ; Multiple Pulmonary Nodules/diagnostic imaging ; Multiple Pulmonary Nodules/pathology ; Retrospective Studies
    Language English
    Publishing date 2019-08-01
    Publishing country United States
    Document type Journal Article
    ISSN 1932-6203
    ISSN (online) 1932-6203
    DOI 10.1371/journal.pone.0220550
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: A Case of Pulmonary Granulomatosis with Polyangiitis Mimicking Septic Pneumonia Resulting from Middle Ear Infection

    Seungho Lee / Semin Chong / Min Jae Cha / Mi Kyung Kim

    대한영상의학회지, Vol 77, Iss 3, Pp 177-

    2017  Volume 182

    Abstract: Granulomatosis with polyangiitis (GPA) is a multisystemic disease characterized by necrotizing granulomatous vasculitis, which histopathologically presents as vasculitis and granulomas with multinucleated giant cells. In pulmonary GPA, pulmonary cavity ... ...

    Abstract Granulomatosis with polyangiitis (GPA) is a multisystemic disease characterized by necrotizing granulomatous vasculitis, which histopathologically presents as vasculitis and granulomas with multinucleated giant cells. In pulmonary GPA, pulmonary cavity is a commonly observed imaging pattern although nodule and consolidation are the most common imaging findings. This cavitation follows a fluid-filled space within a pulmonary consolidation, a mass, or a nodule through the expulsion or drainage of a low-attenuation necrotic part of the lesion via the bronchial tree. However, in previous CT studies of pulmonary GPA, most cavitations appear as gas-filled spaces rather than accompanying necrotic fluid-attenuation areas. Therefore, we report a case of pulmonary GPA that presented with consolidations and nodules accompanied by a central low-attenuation area on CT, which mimicked septic pneumonia.
    Keywords lung ; granulomatosis with polyangiitis ; pneumonia ; ear ; middle ; infection ; Medical physics. Medical radiology. Nuclear medicine ; R895-920
    Language English
    Publishing date 2017-09-01T00:00:00Z
    Publisher The Korean Society of Radiology
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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