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Lee Ji Ye,Baek Jung Hwan,Ha Eun Ju,Sung Jin Yong,Shin Jung Hee,김지훈,Lee Min Kyoung,Jung So Lyung,Lee Young Hen,Ahn Hye Shin,Yoon Jung Hyun,Choi Yoon Jung,Park Jeong Seon,Lee Yoo Jin,Choi Miyoung,Na Don 대한영상의학회 2021 Korean Journal of Radiology Vol.22 No.5
Imaging plays a key role in the diagnosis and characterization of thyroid diseases, and the information provided by imaging studies is essential for management planning. A referral guideline for imaging studies may help physicians make reasonable decisions and minimize the number of unnecessary examinations. The Korean Society of Thyroid Radiology (KSThR) developed imaging guidelines for thyroid nodules and differentiated thyroid cancer using an adaptation process through a collaboration between the National Evidence-based Healthcare Collaborating Agency and the working group of KSThR, which is composed of radiologists specializing in thyroid imaging. When evidence is either insufficient or equivocal, expert opinion may supplement the available evidence for recommending imaging. Therefore, we suggest rating the appropriateness of imaging for specific clinical situations in this guideline.
Choi, Kyu-Ho,Yoo, Ie-Ryung,Han, Eun-Ji,Kim, Yeon-Sil,Kim, Gi-Won,Na, Sae-Jung,Sun, Dong-Il,Jung, So-Lyung,Jung, Chan-Kwon,Kim, Min-Sik,Lee, So-Yeon,Kim, Sung-Hoon The Korea Society of Nuclear Medicine 2011 핵의학 분자영상 Vol.45 No.1
Purpose We assessed the prognostic value of metabolic tumor volume (MTV) measured using$^{18}F$-fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) inpatients with locally advanced head and neck squamous cell carcinoma (HNSCC). $Methods$ We retrospectively reviewed 56 patients (51 men, five women; mean age $56.0{\pm}8.8$years) who had locally advanced HNSCC and underwent FDG PET/CT for initial evaluation. All patients had surgical resection and radiotherapy with or without concurrent chemotherapy. The peak standardized uptake value ($SUV_{peak}$) and MTV of the target lesion, including primary HNSCC andmetastatic cervical lymph nodes, were measured from FDG PET/CT images. We compared $SUV_{peak}$, MTV, and clinicopathologic variables such as age, Eastern Cooperative Oncology Group (ECOG) performance status, pN stage, pT stage, TNM stage, histologic grade and treatment modality to disease-free survival (DFS) and overall survival (OS). Results On the initial FDG PET/CT scans, the median $SUV_{peak}$ was 7.8 (range, 1.8-19.0) and MTV was17.0 $cm^3$ (range, 0.1-131.0 $cm^3$). The estimated 2-year DFS and OS rates were 67.2% and 81.8%. The cutoff points of $SUV_{peak}$ 6.2 and MTV 20.7 $cm^3$ were the best discriminative values for predicting clinical outcome. MTV and ECOG performance status were significantly related to DFS and OS on univariate and multivariate analyses (p<0.05). Conclusion The MTV obtained from initial FDG PET/CT scan is a significant prognostic factor for disease recurrence and mortality in locally advanced HNSCC treated with surgery and radiotherapy with or without chemotherapy.
Lee, Yoon Jung,Lee, Song,Jang, Jinhee,Choi, Hyun Seok,Jung, So Lyung,Ahn, Kook-Jin,Kim, Bum-soo,Lee, Kang Hoon Korean Society of Magnetic Resonance in Medicine 2015 Investigative Magnetic Resonance Imaging Vol.19 No.2
Purpose: Susceptibility weighted imaging (SWI) is a new magnetic resonance technique that can exploit the magnetic susceptibility differences of various tissues. Intracranial hemorrhage (ICH) looks a dark blooming on the magnitude images of SWI. However, the pattern of ICH on phase images is not well known. The purpose of this study is to characterize hemorrhagic lesions on the phase images of SWI. Materials and Methods: We retrospectively enrolled patients with ICH, who underwent both SWI and precontrast CT, between 2012 and 2013 (n = 95). An SWI was taken, using the 3-tesla system. A phase map was generated after postprocessing. Cases with an intracranial hemorrhage were reviewed by an experienced neuroradiologist and a trainee radiologist, with 10 years and 3 years of experience, respectively. The types and stages of the hemorrhages were determined in correlation with the precontrast CT, the T1- and T2-weighted images, and the FLAIR images. The size of the hemorrhage was measured by a one- directional axis on a magnitude image of SWI. The phase values of the ICH were qualitatively evaluated: hypo-, iso-, and hyper-intensity. We summarized the imaging features of the intracranial hemorrhage on the phase map of the SWI. Results: Four types of hemorrhage are observed: subdural and epidural; subarachnoid; parenchymal hemorrhage; and microbleed. The stages of the ICH were classified into 4 groups: acute (n = 34); early subacute (n = 11); late subacute (n = 15); chronic (n = 8); stage-unknown microbleeds (n = 27). The acute and early subacute hemorrhage showed heterogeneous mixed hyper-, iso-, and hypo-signal intensity; the late subacute hemorrhage showed homogeneous hyper-intensity, and the chronic hemorrhage showed a shrunken iso-signal intensity with the hyper-signal rim. All acute subarachnoid hemorrhages showed a homogeneous hyper-signal intensity. All parenchymal hemorrhages (> 3 mm) showed a dipole artifact on the phase images; however, microbleeds of less than 3 mm showed no dipole artifact. Larger hematomas showed a heterogeneous mixture of hyper-, iso-, and hypo-signal intensities. Conclusion: The pattern of the phase value of the SWI showed difference, according to the type, stage, and size.
조우진,Sim Jung Suk,Jung So Lyung 대한초음파의학회 2021 ULTRASONOGRAPHY Vol.40 No.3
Purpose: The aim of this study was to evaluate the efficacy of ethanol ablation (EA) in the treatment of cystic thyroid nodules using low-dose ethanol regardless of the initial volume of the nodule or properties of the aspirate. Methods: Sixty-one nodules in 60 patients were treated with EA from October 2013 to January 2020. In each patient, EA was performed only once, using less than 5 mL of ethanol (99.5%) instilled and removed completely after a few minutes of retention. Nodule volume, the symptom score, the cosmetic score, and complications were evaluated before and after treatment. The therapeutic success rate (TSR) and volume reduction rate (VRR) according to nodule volume and properties of the aspirate were evaluated. Therapeutic success was defined as the absence of any residual fluid or sufficient volume reduction (≥50%) with improvement of nodule-related symptoms. Results: The 61 nodules comprised 38 pure cysts and 23 predominantly cystic nodules. The initial nodule volume was 21.9±15.2 mL (range, 4.4 to 77.2 mL). The TSR was 88.5% (100% in pure cysts and 69.6% in predominantly cystic nodules, P<0.001). The TSR of pure cysts was 100% regardless of nodule volume and properties of the aspirate. In predominantly cystic nodules, the TSR and VRR gradually decreased as volume increased. One patient experienced arrhythmia during the procedure, but completely recovered without sequelae. Conclusion: Single-session EA using low-dose ethanol might be effective for the treatment of symptomatic cystic thyroid nodules regardless of the initial cyst volume and properties of the aspirate, especially in pure cysts.
신영신,이정민,박경수,김창환,유혜영,장은덕,방병기,정소령,박철휘 대한신장학회 1999 Kidney Research and Clinical Practice Vol.18 No.1
Eosinophilic cystitis is an uncommon disease which is characterized by eosinophilic infiltration into all layers of bladder. It was first described in 1959 by Brown and 50 cases have been reported in the literature. The presenting symptoms are frequency, urgency, dysuria and hematuria. It is chronic disease with remission and exacerbation and mimics other forms of chronic cystitis, such as interstitial cystitis, tuberculosis and bladder neoplasm. Diagnosis is made by biopsy. Treatment consists of removal of inciting allergens, corticosteroids, antihistamines, and antibiotics for secondary bacterial infection. Most women and children with eosinophilic cystitis had the history of allergic disease or asthma and most male patients had bladder or prostatic disorders, such as benign prostatic hypertrophy, bladder carcinoma, and congenital anomalies. But eosinophilic cystitis has not been found in diabetic patients yet. We report a case of eosinophilic cystitis in a 59-year-old diabetic patient with brief review of the literature.
Jeh, Su-kyoung,Jung, So Lyung,Kim, Bum Soo,Lee, Yoen Soo unknown 2007 KOREAN JOURNAL OF RADIOLOGY Vol.8 No.3
<P><B>Objective</B></P><P>We wanted to evaluate the degree of conformity of papillary carcinoma and follicular carcinoma to the reported ultrasonographic findings of malignant thyroid tumor.</P><P><B>Materials and Methods</B></P><P>Between January 2003 and December 2004, fine needle aspiration biopsy was performed in 1,036 patients with palpable and nonpalpable thyroid lesions. We retrospectively reviewed the ultrasonographic findings of patients with papillary carcinomas (n = 127) and follicular carcinomas (n = 23) that were proven by operation or fine needle aspiration biopsy. We analyzed the ultrasonographic findings of these nodules based on the reported ultrasonographic findings of malignant thyroid tumor: hypoechogenicity, a taller than wide orientation, a microlobulated or irregular margin, a thick hypoechoic rim (halo sign), microcalcification and cystic change.</P><P><B>Results</B></P><P>The echogenicity was hypoechoic in 72.4% (92/127) of the papillary carcinomas, but it was isoechoic in 65.2% (15/23) of the follicular carcinomas (<I>p</I> < 0.001). The nodule shape was tall or round in 74.1% of the papillary carcinomas, but it was flat in 72.7% of the follicular carcinomas (<I>p</I> < 0.001). The tumor margin was microlobulated or irregular in 92.9% of the papillary carcinomas and in 60.9% of the follicular carcinomas (<I>p</I> < 0.001). A hypoechoic rim was seen in 26% of the papillary carcinomas (thin rim: 13.4%, thick rim: 12.6%) and in 86.6% of the follicular carcinomas (thin rim: 39.1%, thick rim: 47.8%, <I>p</I> < 0.001). Microcalcifications were demonstrated in 33.9% of the papillary carcinomas and in none of the cases of follicular carcinoma (<I>p</I> < 0.001). A solid mass without cystic change were seen in 98.4% of the papillary carcinomas and in 82.6% of the follicular carcinomas (<I>p</I> < 0.001).</P><P><B>Conclusion</B></P><P>The previously reported ultrasonography findings of malignant thyroid tumor are in conformity with most of the papillary carcinomas, but not with follicular carcinomas. The current ultrasonographic features for thyroid malignancy should be cautiously applied as the indication for needle aspiration biopsy so that follicular carcinomas are not missed by too narrow and strict biopsy criteria.</P>
국내의 갑상선 고주파 절제술에 대한 교육: 현황 및 미래 전망
Hye Shin Ahn,So Lyung Jung,Jung Hwan Baek,Jin Yong Sung,Ji-hoon Kim 대한영상의학회 2023 대한영상의학회지 Vol.84 No.5
Radiofrequency ablation (RFA) is a minimally invasive treatment modality used as an alternative to surgery in patients with benign thyroid nodules and recurrent thyroid cancers. In Korea, RFA for thyroid nodules was first performed in 2002, and a large population study was published in 2008. The Task Force Committee of the Korean Society of Thyroid Radiology (KSThR) developed its first recommendations for RFA in 2009, which were revised in 2012 and 2018. The KSThR guideline was the first guideline for RFA of thyroid nodules worldwide and has become a guideline for physicians to perform thyroid RFA in Korea and other countries around the world. These guidelines have contributed significantly to the establishment and widespread use of RFA worldwide. In addition, since 2015, the KSThR has conducted intensive hands-on courses depending on the level of the participants. In this article, the authors introduce the history of eduction for RFA conducted by the KSThR and describe the learning curve of RFA and current training programs in Korea, along with future directions for training programs.