1.Primary Mucosa-Associated Lymphoid Tissue Lymphoma of the Breast with Synchronous Contralateral Invasive Breast Cancer:A Case Report
Kyeong Jin LEE ; Yoon Yeong CHOI ; Suk Jin CHOI ; Min Sun BAE
Journal of the Korean Society of Radiology 2025;86(2):272-278
Primary breast lymphoma is a rare malignant breast tumor, accounting for <1% of all breast cancers. Among them, diffuse large B-cell lymphoma is the most common histologic subtype.However, primary mucosa-associated lymphoid tissue (MALT) lymphoma is less common and more indolent than diffuse large B-cell lymphoma, and primary MALT lymphoma of the breast is extremely rare. We report a case of bilateral breast cancer in a 62-year-old woman with primary MALT lymphoma in right braest and contralateral invasive breast cancer in left breast. The patient presented with a palpable right breast lump, which appeared as a noncalcified mass on mammography and an indistinct irregular hypoechoic mass with internal vascularity on breast ultrasonography. The mass was pathologically confirmed by excisional biopsy as primary MALT lymphoma. The patient underwent dynamic contrast-enhanced breast MRI, which additionally detected a small suspicious mass in the left breast. This was a clinically and mammographically occult breast cancer diagnosed as invasive ductal carcinoma.
2.Primary Mucosa-Associated Lymphoid Tissue Lymphoma of the Breast with Synchronous Contralateral Invasive Breast Cancer:A Case Report
Kyeong Jin LEE ; Yoon Yeong CHOI ; Suk Jin CHOI ; Min Sun BAE
Journal of the Korean Society of Radiology 2025;86(2):272-278
Primary breast lymphoma is a rare malignant breast tumor, accounting for <1% of all breast cancers. Among them, diffuse large B-cell lymphoma is the most common histologic subtype.However, primary mucosa-associated lymphoid tissue (MALT) lymphoma is less common and more indolent than diffuse large B-cell lymphoma, and primary MALT lymphoma of the breast is extremely rare. We report a case of bilateral breast cancer in a 62-year-old woman with primary MALT lymphoma in right braest and contralateral invasive breast cancer in left breast. The patient presented with a palpable right breast lump, which appeared as a noncalcified mass on mammography and an indistinct irregular hypoechoic mass with internal vascularity on breast ultrasonography. The mass was pathologically confirmed by excisional biopsy as primary MALT lymphoma. The patient underwent dynamic contrast-enhanced breast MRI, which additionally detected a small suspicious mass in the left breast. This was a clinically and mammographically occult breast cancer diagnosed as invasive ductal carcinoma.
3.Primary Mucosa-Associated Lymphoid Tissue Lymphoma of the Breast with Synchronous Contralateral Invasive Breast Cancer:A Case Report
Kyeong Jin LEE ; Yoon Yeong CHOI ; Suk Jin CHOI ; Min Sun BAE
Journal of the Korean Society of Radiology 2025;86(2):272-278
Primary breast lymphoma is a rare malignant breast tumor, accounting for <1% of all breast cancers. Among them, diffuse large B-cell lymphoma is the most common histologic subtype.However, primary mucosa-associated lymphoid tissue (MALT) lymphoma is less common and more indolent than diffuse large B-cell lymphoma, and primary MALT lymphoma of the breast is extremely rare. We report a case of bilateral breast cancer in a 62-year-old woman with primary MALT lymphoma in right braest and contralateral invasive breast cancer in left breast. The patient presented with a palpable right breast lump, which appeared as a noncalcified mass on mammography and an indistinct irregular hypoechoic mass with internal vascularity on breast ultrasonography. The mass was pathologically confirmed by excisional biopsy as primary MALT lymphoma. The patient underwent dynamic contrast-enhanced breast MRI, which additionally detected a small suspicious mass in the left breast. This was a clinically and mammographically occult breast cancer diagnosed as invasive ductal carcinoma.
4.Use of oxygen reserve index during bronchoscopic balloon dilation for subglottic stenosis in a patient with left ventricular assist device implantation -a case report-
Jimin LEE ; Minwoo CHUNG ; Eui-Suk SUNG ; Jung-Pil YOON ; Yeong Min YOO ; Jaesang BAE ; Hee Young KIM
Korean Journal of Anesthesiology 2024;77(2):273-277
Background:
Monitoring the oxygenation status is crucial during general anesthesia to ensure patient safety. Although noninvasive pulse oximetry is commonly used to monitor percutaneous oxygen saturation (SpO2), it may not accurately reflect changes in oxygen partial pressure when the latter is excessively high or low. The oxygen reserve index (ORi) provides real-time information about the oxygen reserve status.Case: We present a case of successful management of subglottic stenosis using balloon bronchoscopy in an infant with a left ventricular assist device implantation under ORi monitoring to predict hypoxemia during the surgical procedure.
Conclusions
Utilizing ORi monitoring during anesthesia for procedures involving apnea in critically ill infants can help predict impending desaturation before a drop in SpO2 occurs, allowing anesthesiologists to effectively anticipate and manage the apnea period. Continuous ORi monitoring offers valuable insights during surgical procedures, especially in infants with compromised respiratory and cardiovascular functions.
5.Comparison of Glecaprevir/Pibrentasvir and Sofosbuvir/Ledipasvir in Patients with Hepatitis C Virus Genotype 1 and 2 in South Korea
Hyun Deok SHIN ; Il Han SONG ; Sae Hwan LEE ; Hong Soo KIM ; Tae Hee LEE ; Hyuk Soo EUN ; Seok Hyun KIM ; Byung Seok LEE ; Hee Bok CHAE ; Seok Hwan KIM ; Myung Joon SONG ; Soon Yeong KO ; Suk Bae KIM
The Korean Journal of Gastroenterology 2024;83(3):111-118
Background/Aims:
This study compared the effectiveness and safety of glecaprevir/pibrentasvir (GLE/PIB) and sofosbuvir/ledipasvir (SOF/LDV) in real-life clinical practice.
Methods:
The data from genotype 1 or 2 chronic hepatitis C patients treated with GLE/PIB or sofosbuvir + ribavirin or SOF/LDV in South Korea were collected retrospectively. The analysis included the treatment completion rate, sustained virologic response at 12 weeks (SVR12) test rate, treatment effectiveness, and adverse events.
Results:
Seven hundred and eighty-two patients with genotype 1 or 2 chronic hepatitis C who were treated with GLE/PIB (n=575) or SOF/LDV (n=207) were included in this retrospective study. The baseline demographic and clinical characteristics revealed significant statistical differences in age, genotype, ascites, liver cirrhosis, and hepatocellular carcinoma between the GLE/PIB and SOF/LDV groups. Twenty-two patients did not complete the treatment protocol. The treatment completion rate was high for both regimens without statistical significance (97.7% vs. 95.7%, p=0.08). The overall SVR12 of intention-to-treat analysis was 81.2% vs. 80.7% without statistical significance (p=0.87). The overall SVR12 of per protocol analysis was 98.7% vs. 100% without statistical significance (p=0.14). Six patients treated with GLE/PIB experienced treatment failure. They were all male, genotype 2, and showed a negative hepatitis C virus RNA level at the end of treatment. Two patients treated with GLE/PIB stopped medication because of fever and abdominal discomfort.
Conclusions
Both regimens had similar treatment completion rates, effectiveness, and safety profiles. Therefore, the SOF/LDV regimen can also be considered a viable DAA for the treatment of patients with genotype 1 or 2 chronic hepatitis C.
6.Eosinophil activation markers in blood and urine in preterms developing bronchopulmonary dysplasia
Sun-Hee CHOI ; Sung-Hoon CHUNG ; Kyung-Suk LEE ; Chong-Woo BAE ; Yeong-Ho RHA
Allergy, Asthma & Respiratory Disease 2022;10(1):40-44
Purpose:
Eosinophil-derived neurotoxin (EDN) is not the only a marker for eosinophil activation, but also acts as an alarm protein.Very few studies have examined the potential role of eosinophils in the development of bronchopulmonary dysplasia (BPD). This study aims to address the roles of eosinophil and EDN in the early phase of BPD development.
Methods:
Patients were preterm neonates with respiratory distress syndrome (RDS) born at 36 weeks of gestation or less. Blood and urine samples were collected to measure total eosinophil count in the blood, serum eosinophil cationic protein (ECP), serum EDN, and urinary EDN during the first week of life.
Results:
Fifty-two preterms were recruited, of whom 43 infants were analyzed. Comparisons were made between the RDS (n = 16) and non-RDS groups (n = 27) and between the BPD (n = 6) and non-BPD groups (n = 26). There were no differences between RDS and non-RDS group in total eosinophil count, serum ECP, serum EDN, or urinary EDN, except when compared by gestational age, birth weight and prenatal dexamethasone use. Urinary EDN was increased significantly in the BPD group compared to the non-BPD group.
Conclusion
We demonstrated the roles of eosinophil and EDN in the development of BPD and suggest that urinary EDN may be utilized as a noninvasive factor predicting the development of BPD.
7.A Single Arm, Phase II Study of Simvastatin Plus XELOX and Bevacizumab as First-Line Chemotherapy in Metastatic Colorectal Cancer Patients
Youjin KIM ; Tae Won KIM ; Sae Won HAN ; Joong Bae AHN ; Seung Tae KIM ; Jeeyun LEE ; Joon Oh PARK ; Young Suk PARK ; Ho Yeong LIM ; Won Ki KANG
Cancer Research and Treatment 2019;51(3):1128-1134
PURPOSE: Simvastatin has demonstrated anti-tumor activity in preclinical studies via tumor cell senescence, apoptosis, and anti-angiogenesis. This phase II trial evaluated the efficacy and toxicity profile of conventional XELOX and bevacizumab chemotherapy plus simvastatin in metastatic colorectal cancer patients (MCRC). MATERIALS AND METHODS: Patients with MCRC received first-line XELOX in 3-week treatment cycles of intravenous oxaliplatin 130 mg/m² plus bevacizumab 7.5 mg/kg (day 1), followed by oral capecitabine 1,000 mg/m² twice daily (day 1-14). Simvastatin 80 mg tablets were taken orally once daily every day during the period of chemotherapy. The primary endpoint was progression-free survival (PFS). Secondary endpoints were response rate, duration of response, overall survival (OS), time to progression, and toxicity. RESULTS: From January 2014 to April 2015, 60 patients were enrolled and 55 patients were evaluable for tumor response. The median follow-up duration was 30.1 months (range, 28.5 to 31.7 months). The median PFS was 10.4 months (95% confidence interval [CI], 9.6 to 11.1). The median OS of all patients was 19.0 months (95% CI, 11.9 to 26.0). The disease-control rate and overall response rate were 88.3% (95% CI, 74 to 96) and 58.3% (95% CI, 44 to 77), respectively, by intent-to-treat protocol analysis. There was one complete response and 34 partial responses. One patient experienced grade 3 creatine kinase elevation and liver enzyme elevation. CONCLUSION: Based on the current study, the addition of 80 mg simvastatin to XELOX and bevacizumab showed comparable clinical efficacy in patients with MCRC as first-line chemotherapy and did not increase toxicity.
Apoptosis
;
Arm
;
Bevacizumab
;
Capecitabine
;
Cell Aging
;
Colorectal Neoplasms
;
Creatine Kinase
;
Disease-Free Survival
;
Drug Therapy
;
Follow-Up Studies
;
Humans
;
Liver
;
Simvastatin
;
Tablets
;
Treatment Outcome
8.Comparison of the 7th and the 8th AJCC Staging System for Non-metastatic D2-Resected Lymph Node–Positive Gastric Cancer Treated with Different Adjuvant Protocols
Jeong Il YU ; Do Hoon LIM ; Jeeyun LEE ; Won Ki KANG ; Se Hoon PARK ; Joon Oh PARK ; Young Suk PARK ; Ho Yeong LIM ; Seung Tae KIM ; Su Jin LEE ; Sung KIM ; Tae Sung SOHN ; Jun Ho LEE ; Ji Yeong AN ; Min Gew CHOI ; Jae Moon BAE ; Heejin YOO ; Kyunga KIM
Cancer Research and Treatment 2019;51(3):876-885
PURPOSE: The purpose of this study was to compare prognostic differentiation performances of the 7th and the 8th edition of American Joint Committee on Cancer (AJCC) staging system for gastric cancer (GC) patients. MATERIALS AND METHODS: A total of 1,633 GC patients who underwent curative D2 resection followed by adjuvant chemotherapy alone (CA) or concurrent chemo-radiotherapy (CCRT) from 2004 to 2013 were included. Concordance index (c-index) was applied to compare the discriminatory ability. RESULTS: In the 8th edition, migration of stage was detected in 248 patients (15.2%). Among them, 121 patients were up-staged while 127 patients were down-staged. Overall, there was no statistically significant difference in the discriminatory ability between the 7th and 8th editions. The new edition of staging system, however, showed a trend of better prognostic performance not only in recurrence-free survival (c-index=0.734; 95% confidence interval [CI], 0.706 to 0.762 in the 7th edition vs. c-index=0.740; 95% CI, 0.712 to 0.768 in the 8th edition; p=0.14), but also in overall survival (c-index=0.717; 95% CI, 0.688 to 0.745 in the 7th edition vs. c-index=0.722; 95% CI, 0.694 to 0.751 in the 8th edition; p=0.19), especially in stage III. This finding was repeated in the subgroup analysis regardless of adjuvant CA or CCRT. CONCLUSION: Generally, the 8th edition of AJCC staging system had failed to show a superior discriminatory ability for curatively D2 resected GC patients than the 7th edition, although there was a trend of better prognostic performance of the new edition, regardless of adjuvant treatment method.
Chemotherapy, Adjuvant
;
Humans
;
Joints
;
Methods
;
Neoplasm Staging
;
Prognosis
;
Radiotherapy
;
Recurrence
;
Stomach Neoplasms
9.The Prevalence of Rapid Eye Movement Sleep Behavior Disorder in Amyloid Positron Emission Tomography Positive Alzheimer's Disease
Hyun Suk KIM ; Hyun Joon LEE ; Dong Jin SHIN ; Yeong Bae LEE ; Young NOH ; Kee Hyung PARK
Journal of Sleep Medicine 2019;16(2):102-108
OBJECTIVES:
Rapid eye movement (REM) sleep behavior disorder (RBD) is well known as a prodromal symptom of neurodegenerative disease, especially α-synucleinopathy. In the previous literature, it has been reported the incidence rate of RBD in Alzheimer's disease (AD) is about 10%. This incidence rate is relatively low, if we consider that nearly half of AD patients also have Lewy body pathology. The objective of this study is to determine the incidence rate of RBD among patients with AD, confirmed by amyloid positron emission tomography (PET) image.
METHODS:
We enrolled 57 patients with clinically probable AD patients who identified AD pathology in amyloid PET scan. RBD was evaluated with REM sleep behavior disorder questionnaire-Korean vesion (RBDQ-KR), which validated the RBD screening questionnaire as Korean version to confirm RBD. Detailed neuropsychological tests were measured using the Seoul Neuropsychological Screening Battery (SNSB).
RESULTS:
We analyzed RBDQ-KR data collected from 57 AD patients. Dementia due to AD was 36 patients (63.2%) and mild cognitive impairment (MCI) due to AD was 21 (36.8%). AD with RBD was 14 (24.6%). Among these, AD dementia with RBD was 13 (36.1%), and MCI due to AD with RBD was 1 (4.8%). There were no significant differences in cognitive function between the patients with or without RBD, evaluated by detailed neuropsychological test.
CONCLUSIONS
In this study, the incidence of RBD in AD was not rare; therefore, if the patient shows symptoms of RBD, we should not rule out AD.
10.Rapid onset of efficacy predicts response to therapy with certolizumab plus methotrexate in patients with active rheumatoid arthritis.
Young Mo KANG ; Young Eun PARK ; Won PARK ; Jung Yoon CHOE ; Chul Soo CHO ; Seung Cheol SHIM ; Sang Cheol BAE ; Chang Hee SUH ; Hoon Suk CHA ; Eun Mi KOH ; Yeong Wook SONG ; Bin YOO ; Shin Seok LEE ; Min Chan PARK ; Sang Heon LEE ; Catherine ARENDT ; Willem KOETSE ; Soo Kon LEE
The Korean Journal of Internal Medicine 2018;33(6):1224-1233
BACKGROUND/AIMS: The objective of this study was to determine the efficacy and safety of add-on therapy with certolizumab pegol (CZP) in active rheumatoid arthritis (RA) patients of a single ethnicity. METHODS: In this 24-week, phase 3, randomized, double-blind, placebo-controlled trial, eligible patients (n = 127) were randomized 2:1 to subcutaneous CZP + methotrexate (MTX; 400 mg at week 0, 2, and 4 followed by 200 mg every 2 weeks) or placebo + MTX. RESULTS: At week 24, the American College of Rheumatology criteria for 20% (ACR20) response rate was significantly greater with CZP + MTX than with placebo (66.7% vs. 27.5%, p < 0.001). Differences in ACR20 response rates for CZP vs. placebo were significant from week 1 (p < 0.05) and remained significant through week 24. The CZP group reported significant improvement in physical function and disability compared to the placebo group (p < 0.001) at week 24, as assessed by Korean Health Assessment Questionnaire-Disability Index (KHAQ-DI). Post hoc analysis indicated that the proportion of patients who had ACR70 responses, Disease Activity Score 28 (DAS28) low disease activity, and DAS28 remission at week 24 was greater in CZP + MTX-treated patients who achieved a decrease in DAS28 ≥ 1.2 (43.8%) at week 4 than in nonresponders. Among 18 (22.2%) and 14 patients (35.0%) in CZP and placebo groups who had latent tuberculosis (TB), none developed active TB. Most adverse events were mild or moderate. CONCLUSIONS: CZP treatment combined with MTX in active RA patients with moderate to severe disease activity and an inadequate response to MTX resulted in rapid onset of efficacy, which is associated with better clinical outcome at week 24 and has an acceptable safety profile, especially in an intermediate TB-burden population.
Arthritis, Rheumatoid*
;
Certolizumab Pegol
;
Humans
;
Latent Tuberculosis
;
Methotrexate*
;
Rheumatology

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