Journal of the Korean Society of Radiology最新文献

{"title":"Radiation-Induced Organizing Pneumonia Extending Beyond the Radiation Field After Breast Cancer Radiotherapy.","authors":"Sung Hun Kim, Jung Im Jung","doi":"10.3348/jksr.2026.0024","DOIUrl":"https://doi.org/10.3348/jksr.2026.0024","url":null,"abstract":"","PeriodicalId":101329,"journal":{"name":"Journal of the Korean Society of Radiology","volume":"87 2","pages":"290-291"},"PeriodicalIF":0.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13062388/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147680108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Predictive Factors for Distant Metastasis in Follicular Thyroid Carcinoma: Analysis of Clinical, Genetic, and Radiomics Features.","authors":"Dongjin Yang, Inpyeong Hwang, Taehyuk Ham, Ji Ye Lee, Ji-Hoon Kim, Jae-Kyung Won","doi":"10.3348/jksr.2025.0034","DOIUrl":"https://doi.org/10.3348/jksr.2025.0034","url":null,"abstract":"<p><strong>Purpose: </strong>Distant metastasis in follicular thyroid carcinoma (FTC) significantly affects prognosis and treatment strategies. This study aimed to identify the most effective predictors of distant metastasis in patients with FTC.</p><p><strong>Materials and methods: </strong>We conducted a retrospective analysis of 105 FTC cases (8 with distant metastasis and 97 without) from 1997 to 2018 at a single tertiary hospital. We analyzed the clinicopathological characteristics, genetic markers (RAS and telomerase reverse transcriptase [TERT] promoter mutations), and various US features. Radiomics features were extracted from the US images and assessed using five classifier models. Variables with <i>p</i> < 0.20 in univariable analysis were entered into the multivariable logistic regression model.</p><p><strong>Results: </strong>The metastasis group showed significant age differences (61.1 ± 12.2 vs. 43.8 ± 13.5 years, <i>p</i> = 0.001), tumor volume (44.7 ± 42.7 cm³ vs. 15.9 ± 29.8 cm³, <i>p</i> = 0.013), and maximal size (5.1 ± 2.1 cm vs. 3.5 ± 1.9 cm, <i>p</i> = 0.020). The genetic analysis revealed significantly higher rates of TERT and RAS mutations in the metastatic group (75.0%, 6/8 patients) compared to the non-metastatic group (3.1%, 3/97 patients) (<i>p</i> < 0.001). Radiomics texture analysis demonstrated poor predictive performance (mean area under the receiver operating characteristic curve, 0.53). In multivariate analysis, age (odds ratio [OR] = 1.08, 95% confidence interval [CI] = 1.00-1.20, <i>p</i> = 0.040) and TERT and RAS co-mutations (OR = 52.1, 95% CI = 7.21-822.5, <i>p</i> < 0.001) remained independent predictors. Tumor size was not significant in multivariate analysis.</p><p><strong>Conclusion: </strong>Advanced age patients with FTC and positive TERT and RAS mutations require vigilant management. Currently, radiomics texture analysis has limited value for metastasis prediction.</p>","PeriodicalId":101329,"journal":{"name":"Journal of the Korean Society of Radiology","volume":"87 2","pages":"353-365"},"PeriodicalIF":0.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13062369/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147680118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Feasibility of Using an AI System for Breast Ultrasonography Interpretation According to Clinical Expertise: Results of a Pilot Study.","authors":"Jeeyoun Kim, Kyungwha Han, Keum Won Kim, Won Hwa Kim, Jaeil Kim, Jung Hyun Yoon","doi":"10.3348/jksr.2024.0144","DOIUrl":"https://doi.org/10.3348/jksr.2024.0144","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the benefits of using a commercially available AI system for breast ultrasonography (US) among readers with varying levels of expertise.</p><p><strong>Materials and methods: </strong>A total of 285 breast lesions from 141 women who underwent breast US between February 2012 and April 2015 were retrospectively analyzed using a deep-learning-based AI system for lesion detection and diagnosis. Five readers, comprising experienced (two breast radiologists and one breast surgeon) and inexperienced (one gynecologist and one radiology resident) groups, reviewed the grayscale US images in two sessions: without AI assistance (session 1) and with AI assistance after a two-week washout period (session 2). Diagnostic performance was compared between sessions.</p><p><strong>Results: </strong>The mean area under the curve for all readers significantly improved with AI, increasing from 0.885 to 0.927 (<i>p</i> < 0.001). The inexperienced group demonstrated significant improvements in mean sensitivity (56.9%-87.5%, <i>p</i> < 0.001), negative predictive value (NPV) (77.9%-90.1%, <i>p</i> < 0.001), and accuracy (76.1%-84.4%, <i>p</i> = 0.005). However, no significant improvements were observed for the experienced readers (all <i>p</i>-values > 0.05).</p><p><strong>Conclusion: </strong>The AI system for breast US significantly enhanced the diagnostic performance of inexperienced readers, augmenting sensitivity, NPV, and accuracy, while experienced readers demonstrated minimal improvement, likely due to their already high baseline performance.</p>","PeriodicalId":101329,"journal":{"name":"Journal of the Korean Society of Radiology","volume":"87 2","pages":"314-327"},"PeriodicalIF":0.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13062396/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147679974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gun-Sight Technique for Transjugular Intrahepatic Portosystemic Shunt Creation: Two Case Reports and Review of the Literature.","authors":"In Chul Nam, Hyoung Nam Lee, Sung-Joon Park, Youngjong Cho, Doo Ri Kim","doi":"10.3348/jksr.2025.0059","DOIUrl":"https://doi.org/10.3348/jksr.2025.0059","url":null,"abstract":"<p><p>Transjugular intrahepatic portosystemic shunt (TIPS) creation is an established treatment for complications of portal hypertension; however, the procedure can be technically challenging in patients with distorted vascular anatomy or severe hepatic fibrosis. Conventional techniques may fail to achieve portal vein access in certain patients; therefore, various modifications have been introduced to improve success rates. We present two cases of successful TIPS creation using the gun-sight technique, which entails placing snares in the hepatic and portal veins, followed by percutaneous needle advancement under fluoroscopic guidance to traverse both snares. This study also discusses the advantages, limitations, and technical considerations of the gun-sight technique through a literature review.</p>","PeriodicalId":101329,"journal":{"name":"Journal of the Korean Society of Radiology","volume":"87 2","pages":"375-382"},"PeriodicalIF":0.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13062374/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147679987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular Markers in Follicular Thyroid Carcinoma: Moving Toward Better Prediction of Distant Metastasis.","authors":"Jeong Seon Park","doi":"10.3348/jksr.2026.0032","DOIUrl":"https://doi.org/10.3348/jksr.2026.0032","url":null,"abstract":"","PeriodicalId":101329,"journal":{"name":"Journal of the Korean Society of Radiology","volume":"87 2","pages":"366-368"},"PeriodicalIF":0.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13062366/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147680124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hepatocellular Carcinoma Arising from Ectopic Liver Tissue in the Left Triangular Ligament: A Case Report.","authors":"Yun Kyoung Shin, Je Ryung Gil, Hyun Jung Yoon, Yeo Jin Kim","doi":"10.3348/jksr.2024.0103","DOIUrl":"https://doi.org/10.3348/jksr.2024.0103","url":null,"abstract":"<p><p>Accessory liver lobes represent an infrequent anatomical anomaly. The probability of hepatocellular carcinoma (HCC) developing in these accessory lobes remains exceptionally rare. Herein we report a case of a HCC arising from accessory liver lobe. A 63-year-old man came to our institution because of an abnormally elevated level of alpha-fetoprotein (AFP). There were no previous medical issues related to chronic liver disease or cirrhosis. Initially, MRI, PET-CT, and preventive interventions failed to detect tumor lesions. After conducting three follow-ups, it was concluded that the elliptical HCC was linked to the mother liver through a linear structure. This report shows when AFP levels continue to escalate without apparent etiology and routine examinations of the main liver reveal no conspicuous pathology, fastidious retrospective scrutiny of the anatomical elements encompassing the ectopic HCC or accessory liver should be undertaken.</p>","PeriodicalId":101329,"journal":{"name":"Journal of the Korean Society of Radiology","volume":"87 2","pages":"369-374"},"PeriodicalIF":0.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13062373/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147680070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"후뇌염의 영상 소견 스펙트럼: 임상 화보.","authors":"Ebinesh Arulnathan, Sathya Sree, Mohan Venugopal, Praislin Gideon, Lokesh Murali, Shanmugam R","doi":"10.3348/jksr.2024.0129","DOIUrl":"https://doi.org/10.3348/jksr.2024.0129","url":null,"abstract":"<p><p>Rhombencephalitis is a rare clinical syndrome characterized by inflammation or infection involving the hindbrain, or rhombencephalon. This syndrome is also clinically diverse, with a wide range of etiologies and varying prognoses. The causes of rhombencephalitis include infections, paraneoplastic syndromes, demyelinating disorders, and autoimmune conditions. Neuroimaging, especially MRI, plays an indispensable role in the diagnosis and topographic evaluation of abnormalities. Bacterial rhombencephalitis, particularly that caused by <i>Listeria monocytogenes</i>, commonly affects the dorsal brainstem and proximal cervical spinal cord. Viral rhombencephalitis caused by pathogens such as enterovirus 71 and herpes simplex virus manifests with distinct imaging patterns that aid in differentiating it from other causes. Paraneoplastic rhombencephalitis is associated with malignancies such as small cell lung carcinoma, neuroendocrine tumors, and lymphoma. Demyelinating conditions such as acute disseminated encephalomyelitis, multiple sclerosis, neuromyelitis optica spectrum disorder, and myelin oligodendrocyte glycoprotein antibody-associated disease also demonstrate brainstem involvement with distinctive characteristics. Other uncommon causes of rhombencephalitis include autoimmune diseases such as Bickerstaff brainstem encephalitis and Neuro-Behçet's disease. Understanding these imaging patterns is crucial for timely diagnosis and differentiation of underlying causes, improving patient management and outcomes. This pictorial review provides a comprehensive overview of the imaging characteristics of various causes of rhombencephalitis.</p>","PeriodicalId":101329,"journal":{"name":"Journal of the Korean Society of Radiology","volume":"87 2","pages":"292-424"},"PeriodicalIF":0.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13062371/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147680150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Buried Balloon Syndrome After Percutaneous Radiologic Gastrostomy: Two Case Reports and a Literature Review.","authors":"Ik-Tae Kwon, Hyoung Nam Lee, Youngjong Cho, Seung Soo Kim, Chan Ho Park, Hyerim Park","doi":"10.3348/jksr.2025.0042","DOIUrl":"10.3348/jksr.2025.0042","url":null,"abstract":"<p><p>Buried balloon syndrome is a rare condition in which a balloon-retained gastrostomy catheter becomes embedded within the gastric or abdominal wall, potentially leading to catheter dysfunction, leakage, local infection, or even peritonitis. Despite its clinical significance, this complication remains under-recognized and has been reported only in anecdotal case studies. In Korea, the shift from pigtail-retained to balloon-retained catheters for percutaneous radiologic gastrostomy has increased awareness of this uncommon adverse event. This report presents two cases of buried balloon syndrome following percutaneous radiologic gastrostomy and outlines their clinical features, imaging findings, and management approaches. Given the potential for serious consequences if unrecognized, increased awareness of this condition among healthcare providers-particularly interventional radiologists-is essential.</p>","PeriodicalId":101329,"journal":{"name":"Journal of the Korean Society of Radiology","volume":"87 1","pages":"157-164"},"PeriodicalIF":0.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12883935/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146159800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Endovascular Treatment of Extensive Acute Thrombosis Involving the Iliocaval and Renal Veins Associated with Chronic Caval Occlusion: A Case Report.","authors":"Sang Woo Cho, Suyoung Park, Jeong Ho Kim, Jung Han Hwang, Dai Sik Ko, Chanyeong Park, Hyeon Kyu Shin","doi":"10.3348/jksr.2025.0043","DOIUrl":"10.3348/jksr.2025.0043","url":null,"abstract":"<p><p>Deep venous thrombosis (DVT) may present with a wide spectrum of clinical manifestations, ranging from asymptomatic cases to signs and symptoms associated with pulmonary embolism, depending on the location and extent of the thrombus. Extensive acute DVT accompanied by chronic caval occlusion may not be adequately treated with anticoagulation or catheter-directed thrombolysis alone. We present a case of extensive acute iliocaval and renal vein thrombosis associated with chronic inferior vena cava occlusion that was successfully treated using endovascular techniques, including rheolytic thrombectomy and stent insertion.</p>","PeriodicalId":101329,"journal":{"name":"Journal of the Korean Society of Radiology","volume":"87 1","pages":"165-170"},"PeriodicalIF":0.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12883939/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146159852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"상직장동맥에서 기원한 드문 해부학적 변이에서의 전립선 동맥 색전술: 증례 보고.","authors":"Dang Khoa Tran, The Anh Nguyen, Thi Thanh Thanh Tran, Hoang Dat Le, Thanh Dung Le, Van Sy Than","doi":"10.3348/jksr.2025.0055","DOIUrl":"10.3348/jksr.2025.0055","url":null,"abstract":"<p><p>This case report describes a rare vascular variant identified during preparation for prostatic artery embolization (PAE), in which the right prostatic artery originated from the superior rectal artery (SRA). An 84-year-old man with benign prostatic hyperplasia and severe lower urinary tract symptoms (International Prostate Symptom Score [IPSS] 24, prostate volume 108 mL) underwent PAE after failure of medical therapy. Preprocedural CT angiography (CTA) identified the right prostatic artery originating from the SRA and the left prostatic artery originating from the internal pudendal artery. Embolization was successfully performed via left distal radial access, using 250-µm microspheres and a mixture of n-butyl cyanoacrylate and ethiodized oil. At six-month follow-up, the patient's IPSS improved to 12, Qmax increased to 21 mL/sec, and prostate volume decreased to 74 mL. Postprocedural MRI confirmed transitional zone infarction without complications. This case highlights the critical role of CTA in identifying rare anatomical variants to ensure safe and effective PAE.</p>","PeriodicalId":101329,"journal":{"name":"Journal of the Korean Society of Radiology","volume":"87 1","pages":"152-156"},"PeriodicalIF":0.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12883937/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146159835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}