1.Radioactive Iodine-Induced Graves' Disease in a Patient with Toxic Adenoma.
Seokyoung YOON ; Kichul SHIN ; Eirie CHO ; Min Joo KIM
Journal of Korean Thyroid Association 2015;8(1):98-102
We report a rare case of radioactive iodine (RAI)-induced Graves' disease in a patient with toxic adenoma. A 42-year-old woman presented with neck masses. A hot nodule was detected on a thyroid scan, which suggested toxic adenoma. She was treated with RAI. Three months after the treatment, she complained of thyrotoxic symptoms such as weight loss, palpitation, diarrhea, and menstrual irregularity. A new thyroid scan showed diffuse increased uptake, while the toxic adenoma previously detected was now a cold nodule. Moreover, an increased level of antibodies against the thyroid-stimulating hormone receptor was detected. These findings indicated Graves' disease. Hence she was treated with anti-thyroid drug. This case serves as a reminder for physicians to consider RAI-induced Graves' disease if thyrotoxicosis is noted after RAI treatment.
Adenoma*
;
Adult
;
Antibodies
;
Diarrhea
;
Female
;
Graves Disease*
;
Humans
;
Iodine
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Neck
;
Radioisotopes
;
Thyroid Gland
;
Thyroid Nodule
;
Thyrotoxicosis
;
Thyrotropin
;
Weight Loss
2.Machine Learning Model for Classifying the Results of Fetal Cardiotocography Conducted in High-Risk Pregnancies
Tae Jun PARK ; Hye Jin CHANG ; Byung Jin CHOI ; Jung Ah JUNG ; Seongwoo KANG ; Seokyoung YOON ; Miran KIM ; Dukyong YOON
Yonsei Medical Journal 2022;63(7):692-700
Purpose:
Fetal well-being is usually assessed via fetal heart rate (FHR) monitoring during the antepartum period. However, the interpretation of FHR is a complex and subjective process with low reliability. This study developed a machine learning model that can classify fetal cardiotocography results as normal or abnormal.
Materials and Methods:
In total, 17492 fetal cardiotocography results were obtained from Ajou University Hospital and 100 fetal cardiotocography results from Czech Technical University and University Hospital in Brno. Board-certified physicians then reviewed the fetal cardiotocography results and labeled 1456 of them as gold-standard; these results were used to train and validate the model. The remaining results were used to validate the clinical effectiveness of the model with the actual outcome.
Results:
In a test dataset, our model achieved an area under the receiver operating characteristic curve (AUROC) of 0.89 and area under the precision-recall curve (AUPRC) of 0.73 in an internal validation dataset. An average AUROC of 0.73 and average AUPRC of 0.40 were achieved in the external validation dataset. Fetus abnormality score, as calculated from the continuous fetal cardiotocography results, was significantly associated with actual clinical outcomes [intrauterine growth restriction: odds ratio, 3.626 (p=0.031); Apgar score 1 min: odds ratio, 9.523 (p<0.001), Apgar score 5 min: odds ratio, 11.49 (p=0.001), and fetal distress: odds ratio, 23.09 (p<0.001)].
Conclusion
The machine learning model developed in this study showed precision in classifying FHR signals. This suggests that the model can be applied to medical devices as a screening tool for monitoring fetal status.
3.Long-term Complete Response with Lapatinib Plus Capecitabine in a Patient with HER2-Positive Breast Cancer Metastasized to the Pancreas.
Kichul SHIN ; Jinsu KIM ; Seokyoung YOON ; Eung Ho CHO ; Changwon JUNG ; Hye Jin KANG
The Ewha Medical Journal 2015;38(3):138-143
A 37-year-old woman underwent a total mastectomy and adjuvant chemotherapy for HER2-positive breast cancer (pT1N0M), and then recurred in the right lung followed by the pancreas. Lung lobectomy and pylorus-preserving pancreaticoduodenectomy were performed, and systemic chemotherapies including trastuzumab were sequentially administered. However, metastasis to the pancreatic tail was detected. She underwent image-guided radiation therapy, but this was not effective. Lapatinib plus capecitabine combination was administered as forth-line treatment and the metastatic lesion was disappeared. She is continuing this regimen with a complete response for 48 months until now.
Adult
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Breast Neoplasms*
;
Breast*
;
Chemotherapy, Adjuvant
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Drug Therapy
;
Female
;
Humans
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Lung
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Mastectomy, Simple
;
Neoplasm Metastasis
;
Pancreas*
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Pancreaticoduodenectomy
;
Radiotherapy, Image-Guided
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Tail
;
Capecitabine
;
Trastuzumab
4.Clinicopathologic characteristics of ovarian clear cell carcinoma in the background of endometrioma: a surveillance strategy for an early detection of malignant transformation in patients with asymptomatic endometrioma.
Joo Hyuk SON ; Seokyoung YOON ; Seokyung KIM ; Tae Wook KONG ; Jiheum PAEK ; Suk Joon CHANG ; Hee Sug RYU
Obstetrics & Gynecology Science 2019;62(1):27-34
OBJECTIVE: This study aimed to analyze the clinical features of clear cell carcinoma in relation to endometriosis and to determine an appropriate surveillance strategy for the early detection of malignant transformation of endometrioma in asymptomatic patients. METHODS: We retrospectively reviewed the clinicopathologic data of 50 patients with ovarian clear cell carcinoma. Clinicopathologic characteristics, treatment outcomes, and the association between endometriosis and the risk of malignant transformation were analyzed. RESULTS: Ten (20%) patients had been diagnosed with endometrioma before the diagnosis of clear cell carcinoma. The median period from the diagnosis of endometrioma to clear cell carcinoma diagnosis was 50 months (range, 12–213 months). After complete staging surgery, histological confirmation of endometriosis was possible in 35 (70%) patients. Of the 50 patients, 39 (78%) had not undergone any gynecologic surveillance until the onset of symptoms, at which time many of them presented with a rapidly growing pelvic mass (median 10 cm, range 4.6–25 cm). With the exception of 2 patients, all cancer diagnoses were made when the patients were in their late thirties, and median tumor size was found to increase along with age. Asymptomatic patients (n=11) who had regular gynecologic examinations were found to have a relatively smaller tumor size, lesser extent of tumor spread, and lower recurrence rate (P=0.011, 0.283, and 0.064, respectively). The presence of endometriosis was not related to the prognosis. CONCLUSION: Considering the duration of malignant transformation and the timing of cancer diagnosis, active surveillance might be considered from the age of the mid-thirties, with at least a 1-year interval, in patients with asymptomatic endometrioma.
Cell Transformation, Neoplastic
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Diagnosis
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Endometriosis*
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Female
;
Humans
;
Prognosis
;
Recurrence
;
Retrospective Studies
5.An Open Label Multi-Center Prospective Observational Study of Paliperidone Extended Release to Assess the Medication Satisfaction and Treatment Response in Patients with Schizophrenia.
Bong Ju LEE ; Donghwan SHIN ; Mankil SEO ; Yohan LEE ; Dongseok YANG ; Jinwoo PAC ; Juyeon LEE ; Won Myong BAHK ; Tae Youn JUN ; Sangkyu LEE ; Byungjin CHAE ; Kyungsik KIM ; Eunjung JEONG ; Seokyoung DO ; Yong Lee JANG ; Jongil LEE ; Jaeyeol JEONG ; Sanghoon KIM ; Bo Hyun YOON ; Shingyeom KIM ; Moonsoo LEE ; Jaewoo ROH ; Minsook GIM ; Sung Ku CHOI ; Young Hoon KIM
Korean Journal of Psychopharmacology 2012;23(3):88-96
OBJECTIVE: The aim of this study was to demonstrate changes of subjective medication satisfaction and clinical benefit after once-daily paliperidone extended release (ER) in treatment of schizophrenia. METHODS: In an open-label, observational, and multicenter study, 374 patients with schizophrenia who switched to paliperidone ER due to any reason were recruited. Medication Satisfaction Questionnaire (MSQ), Clinical Global Impression-Severity (CGI-S), Clinical Global Impression-Improvement and visual analogue scale for sleep (VAS) were assessed at baseline, 4 weeks and 8 weeks after treatment. We also examined the type, frequency, and severity of adverse events newly formed. RESULTS: Among 374 patients, 320 patients (76.5%) were included in the intent-to-treat analysis set. The mean dose of paliperidone ER was 5.33+/-2.31 mg/day at the initiation. At the endpoint, the mean dose of paliperidone ER was 6.68+/-3.13 mg/day. The percentages of patients satisfied with medication were changed from 40.9% at baseline to 67.8% at endpoint (p<0.001). Both CGI-S scores and VAS for daytime drowsiness were significantly decreased after 8 weeks (both p<0.0001) and mean scores of MSQ and VAS for sleep quality were improved after 8 weeks (both p<0.0001). CONCLUSION: After switching to paliperidone ER, 67.8% of patients with schizophrenia who had any reason to switch medication showed subjective satisfaction for medication and clinical improvement without significant adverse events. Regarding that medication satisfaction was associated with changes of clinical states, medication satisfaction can be used for measures for clinical scales in the treatment of schizophrenia.
Humans
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Isoxazoles
;
Prospective Studies
;
Pyrimidines
;
Surveys and Questionnaires
;
Schizophrenia
;
Sleep Stages
;
Weights and Measures
6.Lazertinib versus Gefitinib as First-Line Treatment for EGFR-mutated Locally Advanced or Metastatic NSCLC: LASER301 Korean Subset
Ki Hyeong LEE ; Byoung Chul CHO ; Myung-Ju AHN ; Yun-Gyoo LEE ; Youngjoo LEE ; Jong-Seok LEE ; Joo-Hang KIM ; Young Joo MIN ; Gyeong-Won LEE ; Sung Sook LEE ; Kyung-Hee LEE ; Yoon Ho KO ; Byoung Yong SHIM ; Sang-We KIM ; Sang Won SHIN ; Jin-Hyuk CHOI ; Dong-Wan KIM ; Eun Kyung CHO ; Keon Uk PARK ; Jin-Soo KIM ; Sang Hoon CHUN ; Jangyoung WANG ; SeokYoung CHOI ; Jin Hyoung KANG
Cancer Research and Treatment 2024;56(1):48-60
Purpose:
This subgroup analysis of the Korean subset of patients in the phase 3 LASER301 trial evaluated the efficacy and safety of lazertinib versus gefitinib as first-line therapy for epidermal growth factor receptor mutated (EGFRm) non–small cell lung cancer (NSCLC).
Materials and Methods:
Patients with locally advanced or metastatic EGFRm NSCLC were randomized 1:1 to lazertinib (240 mg/day) or gefitinib (250 mg/day). The primary endpoint was investigator-assessed progression-free survival (PFS).
Results:
In total, 172 Korean patients were enrolled (lazertinib, n=87; gefitinib, n=85). Baseline characteristics were balanced between the treatment groups. One-third of patients had brain metastases (BM) at baseline. Median PFS was 20.8 months (95% confidence interval [CI], 16.7 to 26.1) for lazertinib and 9.6 months (95% CI, 8.2 to 12.3) for gefitinib (hazard ratio [HR], 0.41; 95% CI, 0.28 to 0.60). This was supported by PFS analysis based on blinded independent central review. Significant PFS benefit with lazertinib was consistently observed across predefined subgroups, including patients with BM (HR, 0.28; 95% CI, 0.15 to 0.53) and those with L858R mutations (HR, 0.36; 95% CI, 0.20 to 0.63). Lazertinib safety data were consistent with its previously reported safety profile. Common adverse events (AEs) in both groups included rash, pruritus, and diarrhoea. Numerically fewer severe AEs and severe treatment–related AEs occurred with lazertinib than gefitinib.
Conclusion
Consistent with results for the overall LASER301 population, this analysis showed significant PFS benefit with lazertinib versus gefitinib with comparable safety in Korean patients with untreated EGFRm NSCLC, supporting lazertinib as a new potential treatment option for this patient population.