1.Ultrasonographic Finding of Mondor's Disease: A Case Report.
Myungsu LEE ; Min Jung KIM ; Eun Kyung KIM
Journal of the Korean Society of Medical Ultrasound 2011;30(1):55-57
Mondor's disease is a rare condition involving the breast and anterior chest wall and it is characterized by superficial thrombophlebitis. The usual clinical manifestation of the disease is the acute development of a painful and palpable cord or mass on the breast, and it shows a benign process, but it can be accompanied with malignant disease. On ultrasonography, the lesion is seen as a long tubular anechoic structure with a beaded appearance, and this should be differentiated from a dilated duct or sparganosis. We report here on our experience with a 35-year-old woman who had Mondor's disease with the typical clinical presentation and imaging findings.
Adult
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Breast
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Female
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Humans
;
Sparganosis
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Thoracic Wall
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Thrombophlebitis
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Ultrasonography, Mammary
2.Full-arch accuracy of five intraoral scanners:In vivo analysis of trueness and precision
Miran KWON ; Youngmok CHO ; Dong-Wook KIM ; MyungSu KIM ; Yoon-Ji KIM ; Minho CHANG
The Korean Journal of Orthodontics 2021;51(2):95-104
Objective:
To evaluate the trueness and precision of full-arch scans acquired using five intraoral scanners and investigate the factors associated with the dimensional accuracy of the intraoral scan data.
Methods:
Nine adult participants (mean age, 34.3 ± 8.3 years) were recruited. Four zirconium spheres (Ø 6 mm) were bonded to the canines and the molars. Following acquisition of reference scans using an industrial-grade scanner, five intraoral scanners, namely i500, CS3600, Trios 3, iTero, and CEREC Omnicam, were used to scan the arches. Linear distances between the four reference spheres were automatically calculated, and linear mixed model analysis was performed to compare the trueness and precision of the intraoral scan data among the different scanners.
Results:
The absolute mean trueness and precision values for all intraoral scanners were 76.6 ± 79.3 and 56.6 ± 52.4 µm, respectively. The type of scanner and the measured linear distances had significant effects on the accuracy of the intraoral scan data. With regard to trueness, errors in the intermolar dimension and the distance from the canine to the contralateral molar were greater with Omnicam than with the other scanners. With regard to precision, the error in the linear distance from the canine to the molar in the same quadrant was greater with Omnicam and CS3600 than with the other scanners.
Conclusions
The dimensional accuracy of intraoral scan data may differ significantly according to the type of scanner, with the amount of error in terms of trueness being clinically significant.
3.Full-arch accuracy of five intraoral scanners:In vivo analysis of trueness and precision
Miran KWON ; Youngmok CHO ; Dong-Wook KIM ; MyungSu KIM ; Yoon-Ji KIM ; Minho CHANG
The Korean Journal of Orthodontics 2021;51(2):95-104
Objective:
To evaluate the trueness and precision of full-arch scans acquired using five intraoral scanners and investigate the factors associated with the dimensional accuracy of the intraoral scan data.
Methods:
Nine adult participants (mean age, 34.3 ± 8.3 years) were recruited. Four zirconium spheres (Ø 6 mm) were bonded to the canines and the molars. Following acquisition of reference scans using an industrial-grade scanner, five intraoral scanners, namely i500, CS3600, Trios 3, iTero, and CEREC Omnicam, were used to scan the arches. Linear distances between the four reference spheres were automatically calculated, and linear mixed model analysis was performed to compare the trueness and precision of the intraoral scan data among the different scanners.
Results:
The absolute mean trueness and precision values for all intraoral scanners were 76.6 ± 79.3 and 56.6 ± 52.4 µm, respectively. The type of scanner and the measured linear distances had significant effects on the accuracy of the intraoral scan data. With regard to trueness, errors in the intermolar dimension and the distance from the canine to the contralateral molar were greater with Omnicam than with the other scanners. With regard to precision, the error in the linear distance from the canine to the molar in the same quadrant was greater with Omnicam and CS3600 than with the other scanners.
Conclusions
The dimensional accuracy of intraoral scan data may differ significantly according to the type of scanner, with the amount of error in terms of trueness being clinically significant.
4.Efficacy of Retrievable Metallic Stent with Fixation String for Benign Stricture after Upper Gastrointestinal Surgery.
Jeong Eun KIM ; Hyo Cheol KIM ; Myungsu LEE ; Saebeom HUR ; Minuk KIM ; Sang Hwan LEE ; Soo Buem CHO ; Chan Sun KIM ; Joon Koo HAN
Korean Journal of Radiology 2016;17(6):893-902
OBJECTIVE: To determine the efficacy of retrievable metallic stent with fixation string for benign anastomotic stricture after upper gastrointestinal (UGI) surgery. MATERIALS AND METHODS: From June 2009 to May 2015, a total of 56 retrievable metallic stents with fixation string were placed under fluoroscopy guidance in 42 patients who were diagnosed with benign anastomotic stricture after UGI surgery. Clinical success was defined as achieving normal regular diet (NRD). RESULTS: The clinical success rate after the first stent placement was 57.1% (24/42). After repeated stent placement and/or balloon dilation, the clinical success rate was increased to 83.3% (35/42). Six (14.3%) patients required surgical revision to achieve NRD. One (2.4%) patient failed to achieve NRD. Stent migration occurred in 60.7% (34/56) of patients. Successful rate of removing the stent using fixation string and angiocatheter was 94.6% (53/56). Distal migration occurred in 12 stents. Of the 12 stents, 10 (83.3%) were successfully removed whereas 2 could not be removed. No complication occurred regarding distal migration. CONCLUSION: Using retrievable metallic stent with a fixation string is a feasible option for managing early benign anastomotic stricture after UGI surgery. It can reduce complications caused by distal migration of the stent.
Constriction, Pathologic*
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Diet
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Fluoroscopy
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Humans
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Reoperation
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Stents*
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Upper Gastrointestinal Tract
5.The Safety and Clinical Outcomes of Chemoembolization in Child-Pugh Class C Patients with Hepatocellular Carcinomas.
Tae Won CHOI ; Hyo Cheol KIM ; Jeong Hoon LEE ; Su Jong YU ; Beomsik KANG ; Saebeom HUR ; Myungsu LEE ; Hwan Jun JAE ; Jin Wook CHUNG
Korean Journal of Radiology 2015;16(6):1283-1293
OBJECTIVE: To evaluate the safety and clinical outcomes of chemoembolization in Child-Pugh class C patients with hepatocellular carcinomas (HCC). MATERIALS AND METHODS: The study comprised 55 patients with HCC who were classified as Child-Pugh class C and who underwent initial chemoembolization between January 2003 and December 2012. Selective chemoembolization was performed in all technically feasible cases to minimize procedure-related complications. All adverse events within 30 days were recorded using the Common Terminology Criteria for Adverse Events (CTCAE). The tumor response to chemoembolization was evaluated using the modified Response Evaluation Criteria In Solid Tumors. RESULTS: Thirty (54.5%) patients were within the Milan criteria, and 25 (45.5%) were beyond. The mortality of study subjects at 30 days was 5.5%. Major complications were observed in five (9.1%) patients who were all beyond the Milan criteria: two hepatic failures, one hepatic encephalopathy, and two CTCAE grade 3 increases in aspartate aminotransferase/alanine aminotransferase abnormality. The mean length of hospitalization was 6.3 ± 8.3 days (standard deviation), and 18 (32.7%) patients were discharged on the next day after chemoembolization. The tumor responses of the patients who met the Milan criteria were significantly higher (p = 0.014) than those of the patients who did not. The overall median survival was 7.1 months (95% confidence interval: 4.4-9.8 months). CONCLUSION: Even in patients with Child-Pugh class C, chemoembolization can be performed safely with a selective technique in selected cases with a small tumor burden.
Adult
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Aged
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Alanine Transaminase/metabolism
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Aspartate Aminotransferases/metabolism
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Carcinoma, Hepatocellular/mortality/*pathology/therapy
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Chemoembolization, Therapeutic/adverse effects
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Female
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Hepatic Encephalopathy/etiology
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Humans
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Length of Stay
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Liver Neoplasms/mortality/*pathology/therapy
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Liver Transplantation
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Male
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Middle Aged
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Proportional Hazards Models
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Severity of Illness Index
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Survival Rate
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Treatment Outcome
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Tumor Burden
6.Uterine Artery Embolization for Symptomatic Fibroids with High Signal Intensity on T2-Weighted MR Imaging.
Suyon CHANG ; Man Deuk KIM ; Myungsu LEE ; Mu Sook LEE ; Sung Il PARK ; Jong Yun WON ; Do Yun LEE ; Kwang Hun LEE
Korean Journal of Radiology 2012;13(5):618-624
OBJECTIVE: To evaluate the effectiveness of uterine artery embolization (UAE) for treating symptomatic fibroids with high signal intensity (SI) on magnetic resonance (MR) T2-weighted imaging (T2WI). MATERIALS AND METHODS: A total of 537 cases, consisting of 14 patients with high SI fibroids on T2WI (T2 high group), were retrospectively included and compared with 28 randomly selected patients with low SI fibroids on T2WI (control group). High SI of a predominant fibroid on T2WI was defined as having the same or higher SI than the myometrium. Patient ages ranged from 28 to 52 years (mean, 38.1 years). All patients underwent MRI before and after UAE. Predominant fibroid and uterine volumes were calculated with MR images. Symptom status in terms of menorrhagia and dysmenorrhea was scored on a scale of 0-10, with 0 being no symptoms and 10 being the baseline, or initial symptoms. RESULTS: Of the patients in the T2 high group, 13 out of 14 (92.9%) patients demonstrated complete necrosis of the predominant fibroids. The mean volume reduction rates of the predominant fibroids in the T2 high group was 61.7% at three months after UAE, which was significantly higher than the volume reduction rates of 42.1% noted in the control group (p < 0.05). Changes in symptom scores for menorrhagia and dysmenorrhea after UAE (baseline score minus follow-up score) were 4.9 and 7.5 in T2 high group and they were 5.0 and 7.7 in control group, suggesting a significant resolution of symptoms (p < 0.01) in both groups but no significant difference between the two groups. CONCLUSION: UAE is effective for uttering fibroids showing high SI on T2WI. The mean volume reduction rate of the predominant fibroids three months after UAE was greater in the T2 high group than in the control group.
Adult
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Case-Control Studies
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Contrast Media/diagnostic use
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Female
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Humans
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Leiomyoma/*therapy
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Magnetic Resonance Imaging, Interventional/*methods
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Meglumine/diagnostic use
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Middle Aged
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Organometallic Compounds/diagnostic use
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Questionnaires
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Retrospective Studies
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Treatment Outcome
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Uterine Artery Embolization/*methods
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Uterine Neoplasms/*therapy
7.Prospective Multi-Center Korean Registry of Transcatheter Arterial Chemoembolization with Drug-Eluting Embolics for Nodular Hepatocellular Carcinoma: A Two-Year Outcome Analysis
Myungsu LEE ; Jin Wook CHUNG ; Kwang-Hun LEE ; Jong Yun WON ; Ho Jong CHUN ; Han Chu LEE ; Jin Hyoung KIM ; In Joon LEE ; Saebeom HUR ; Hyo-Cheol KIM ; Yoon Jun KIM ; Gyoung Min KIM ; Seung-Moon JOO ; Jung Suk OH
Korean Journal of Radiology 2021;22(10):1658-1670
Objective:
To assess the two-year treatment outcomes of chemoembolization with drug-eluting embolics (DEE) for nodular hepatocellular carcinoma (HCC).
Materials and Methods:
This study was a prospective, multicenter, registry-based, single-arm trial conducted at five university hospitals in Korea. Patients were recruited between May 2011 and April 2013, with a target population of 200. A DC Bead loaded with doxorubicin was used as the DEE agent. Patients were followed up for two years. Per-patient and perlesion tumor response analysis, per-patient overall survival (OS) and progression-free survival (PFS) analysis, and per-lesion tumor control analysis were performed.
Results:
The final study population included 152 patients, with 207 target lesions for the per-lesion analysis. At one-month, six-month, one-year, and two-year per-patient assessments, complete response (CR) rates were 40.1%, 43.0%, 33.3%, and 19.6%, respectively. The objective response (OR) rates were 91.4%, 55.4%, 35.1%, and 19.6%, respectively. The cumulative two-year OS rate was 79.7%. The cumulative two-year PFS rate was 22.4% and the median survival was 9.3 months. In multivariable analysis, the Child-Pugh score (p = 0.019) was an independent predictor of OS, and tumor multiplicity (p < 0.001), tumor size (p = 0.020), and Child-Pugh score (p = 0.006) were independent predictors of PFS. In per-lesion analysis, one-month, six-month, one-year and two-year CR rates were 57.5%, 58.5%, 45.2%, and 33.3%, respectively, and the OR rates were 84.1%, 65.2%, 46.6%, and 33.3%, respectively. The cumulative two-year per-lesion tumor control rate was 36.2%, and the median time was 14.1 months. The Child-Pugh score (p < 0.001) was the only independent predictor of tumor control. Serious adverse events were reported in 11 patients (7.2%).
Conclusion
DEE chemoembolization for nodular HCCs in the Korean population showed acceptable survival, tumor response, and safety profiles after a two-year follow-up. Good liver function (Child-Pugh score A5) was a key predictor of per-patient OS, PFS, and per-lesion tumor control.
8.Prospective Multi-Center Korean Registry of Transcatheter Arterial Chemoembolization with Drug-Eluting Embolics for Nodular Hepatocellular Carcinoma: A Two-Year Outcome Analysis
Myungsu LEE ; Jin Wook CHUNG ; Kwang-Hun LEE ; Jong Yun WON ; Ho Jong CHUN ; Han Chu LEE ; Jin Hyoung KIM ; In Joon LEE ; Saebeom HUR ; Hyo-Cheol KIM ; Yoon Jun KIM ; Gyoung Min KIM ; Seung-Moon JOO ; Jung Suk OH
Korean Journal of Radiology 2021;22(10):1658-1670
Objective:
To assess the two-year treatment outcomes of chemoembolization with drug-eluting embolics (DEE) for nodular hepatocellular carcinoma (HCC).
Materials and Methods:
This study was a prospective, multicenter, registry-based, single-arm trial conducted at five university hospitals in Korea. Patients were recruited between May 2011 and April 2013, with a target population of 200. A DC Bead loaded with doxorubicin was used as the DEE agent. Patients were followed up for two years. Per-patient and perlesion tumor response analysis, per-patient overall survival (OS) and progression-free survival (PFS) analysis, and per-lesion tumor control analysis were performed.
Results:
The final study population included 152 patients, with 207 target lesions for the per-lesion analysis. At one-month, six-month, one-year, and two-year per-patient assessments, complete response (CR) rates were 40.1%, 43.0%, 33.3%, and 19.6%, respectively. The objective response (OR) rates were 91.4%, 55.4%, 35.1%, and 19.6%, respectively. The cumulative two-year OS rate was 79.7%. The cumulative two-year PFS rate was 22.4% and the median survival was 9.3 months. In multivariable analysis, the Child-Pugh score (p = 0.019) was an independent predictor of OS, and tumor multiplicity (p < 0.001), tumor size (p = 0.020), and Child-Pugh score (p = 0.006) were independent predictors of PFS. In per-lesion analysis, one-month, six-month, one-year and two-year CR rates were 57.5%, 58.5%, 45.2%, and 33.3%, respectively, and the OR rates were 84.1%, 65.2%, 46.6%, and 33.3%, respectively. The cumulative two-year per-lesion tumor control rate was 36.2%, and the median time was 14.1 months. The Child-Pugh score (p < 0.001) was the only independent predictor of tumor control. Serious adverse events were reported in 11 patients (7.2%).
Conclusion
DEE chemoembolization for nodular HCCs in the Korean population showed acceptable survival, tumor response, and safety profiles after a two-year follow-up. Good liver function (Child-Pugh score A5) was a key predictor of per-patient OS, PFS, and per-lesion tumor control.
9.Degeneration of Leiomyoma in Patients Referred for Uterine Fibroid Embolization: Incidence, Imaging Features and Clinical Characteristics.
Seung Chul HAN ; Man Deuk KIM ; Dae Chul JUNG ; Myungsu LEE ; Mu Sook LEE ; Sung Il PARK ; Jong Yun WON ; Do Yun LEE ; Kwang Hun LEE
Yonsei Medical Journal 2013;54(1):215-219
PURPOSE: Imaging features and clinical characteristics of degenerated leiomyoma in patients referred for uterine fibroid embolization (UFE) were analyzed to assess the incidence of degenerated leiomyoma. MATERIALS AND METHODS: Patients referred for UFE between 2008 and 2009 were retrospectively analyzed (n=276). Patients ranged in age from 27 to 51 years (mean 38.0 years). All patients underwent screening MRI with contrast enhancement. Medical histories and clinical symptoms were evaluated. RESULTS: Among the 276 patients who underwent MRI, 14 (5.1%) showed degenerated leiomyomas. Symptoms were abdominal pain (n=4, 26.7%), menorrhagia (n=5, 35.7%) and bulk-related symptoms (n=5, 35.7%) and no symptoms (n=5, 35.7%). Of the 14 patients with degenerated leiomyomas, 5 (42.9%) had a history of pregnancy in the past two years. For T1-weighted imaging (T1WI), a high signal intensity (SI) of the leiomyoma was the most common finding (n=9, 64.3%) and a hyperintense rim (n=4, 28.6%) was the second most common. On T2-weighted imaging (T2WI), a low SI of the leiomyoma was found in six patients (42.9%), a high SI in four (28.6%) and a heterogeneous SI in four (28.6%) patients. Conservative management was performed in 11 (78.6%) patients, surgery in 3 (21.4%) and uterine artery embolization in one (7.1%) patient. CONCLUSION: The incidence of degeneration of leiomyoma in patients referred for UFE was 5.1%. Patients presented with variable clinical symptoms with or without a history of pregnancy. MR imaging showed a high SI on T1WI and various SIs on T2WI without contrast enhancement. An understanding of the degeneration of leiomyomata is essential when considering UFE.
Abdominal Pain/therapy
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Adult
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Female
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Follow-Up Studies
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Humans
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Incidence
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Leiomyoma/*complications/epidemiology/*pathology/*surgery
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Magnetic Resonance Imaging
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Menorrhagia/therapy
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Middle Aged
;
Pregnancy
;
Retrospective Studies
;
Treatment Outcome
;
*Uterine Artery Embolization