1.Correction: Characteristics of Pediatric Pancreatitis on Magnetic Resonance Cholangiopancreatography.
Jae Yeon HWANG ; Hye Kyung YOON ; Kyung Mo KIM
Pediatric Gastroenterology, Hepatology & Nutrition 2015;18(3):216-216
The errors were discovered after publication: missing references and missing words.
2.Response and Toxicity of Chemotherapy in 78Cases of Malignant Ovarian Tumors.
Jae yeon WON ; Il Soo PARK ; Soon Gu HWANG
Korean Journal of Gynecologic Oncology and Colposcopy 1996;7(2):127-134
For evaluation of the response and toxicity of the combination chemotherapy, forty six patients with malignant ovarian tumors who had prior surgery were treated with combination chemotherapy from January 1985 to March 1991 at the Department of Obstetrics and Gynecology, Kyung-pook National University Hospital. The results were as follows : 1. The responses were in complete 20 cases(43.5%), in partial 9 cases(19,6%), in stable 6 cases(13.0%), in progressive 11 cases(23.9%) among 46 patients. 2. By the response rates of various combination chemotherapy regimens, the response rate of CAP was 64%(16/25), CP 57.1%(8/14), VAC 100%(3/3), VBP 50%(1/2), FAM 0%(0/1), and Melphalan 100%(1/1) respectively. 3. As the chemotoxicities of combination chemotherapy, leukopenia 20 cases(46.5%), thrombocytopenia 2 cases(4.7%), anemia 20 cases(46.5%), nephrotoxity 6 cases(14.6%), hepatotoxicity 7 cases(18.4%) were observed.
Anemia
;
Drug Therapy*
;
Drug Therapy, Combination
;
Gynecology
;
Humans
;
Leukopenia
;
Melphalan
;
Obstetrics
;
Thrombocytopenia
3.Significance of thymidine kinase activity in the gastrointestinal cancers.
Sung Kyun ROH ; Yeon Woong CHUNG ; Jae Hwang KIM ; Soo Jung LEE ; Koing Bo KWUN
Journal of the Korean Cancer Association 1991;23(2):230-236
No abstract available.
Gastrointestinal Neoplasms*
;
Thymidine Kinase*
;
Thymidine*
4.Emergency ultrasonography of the gastrointestinal tract of children.
Ultrasonography 2017;36(3):204-221
Ultrasonography (US) is widely used to evaluate most body parts in pediatric patients because it is simple, noninvasive, easy to use, and applicable in a wide variety of clinical situations. US is the modality of choice for the initial evaluation of acute abdominal pain in pediatric patients because of their small body habitus and the presence of less fat tissue in the abdominal wall and peritoneal cavity. The most important factor in performing pediatric emergency US is the graded compression technique and selection of the proper transducer. The careful evaluation of bowel wall thickening combined with ancillary findings such as fluid collection, increased echogenicity of the mesenteric fat tissue, enlarged lymph nodes, hyperemic bowel changes, and abnormal bowel peristalsis can increase the diagnostic capability of US.
Abdominal Pain
;
Abdominal Wall
;
Child*
;
Emergencies*
;
Gastrointestinal Diseases
;
Gastrointestinal Tract*
;
Human Body
;
Humans
;
Lymph Nodes
;
Pediatrics
;
Peristalsis
;
Peritoneal Cavity
;
Transducers
;
Ultrasonography*
5.Diagnostic Value of Zero Echo Time Magnetic Resonance Imaging for Pediatric Osseous Pathologies
Soojin KIM ; Young Hun CHOI ; Jae Won CHOI ; Yeon Jin CHO ; Seunghyun LEE ; Jae Yeon HWANG ; Jung-Eun CHEON
Investigative Magnetic Resonance Imaging 2024;28(4):184-192
Purpose:
This study aimed to determine whether zero echo time magnetic resonance imaging (ZTE-MRI), as an alternative imaging modality, and conventional computed tomography (CT) have similar diagnostic qualities for assessing pediatric osseous pathologies.
Materials and Methods:
Twenty-six sets of pediatric musculoskeletal CT and MRI scans (15 boys and 11 girls; mean age, 12 ± 4 years; range, 5–23 years) acquired at Seoul National University Children’s Hospital (January 2021 to November 2023) were retrospectively evaluated. CT-like images from ZTE-MRI were generated using grayscale inversion. Two radiologists independently assessed ZTE-MRI image quality (S anat) on a 5-point scale (1 = nondiagnostic, 5 = excellent) and a comparative scale (–2 = CT greater, 0 = same, 2 = ZTE-MRI greater) for lesion delineation (Scomp). The confidence interval of proportions and intraclass correlation coefficient were calculated to assess inter-rater agreement, and Wilcoxon rank-sum test, Mann–Whitney U test, or paired t-test was used to compare image quality or cortical thickness between the modalities.
Results:
ZTE-MRI demonstrated diagnostic quality (S anat ≥ 3) in 85%–96% of the cases, 89%–96% for cortical delineation, 92%–100% for intramedullary cavity (IMC) delineation, and 92% for lesion delineation. Compared with conventional CT, ZTE-MRI showed comparable diagnostic power (Scomp ≥ –1) in 92%–96% of the cases, with Scomp scores indicating no significant difference in lesion delineation (p = 0.53 in reader 1 and p = 0.25 in reader 2). There was a preference for CT over ZTE-MRI in terms of overall image quality and delineation of the cortex and IMC (p < 0.001). Cortical thickness was not significantly different (p = 0.11) between ZTE-MRI and CT.
Conclusion
ZTE-MRI demonstrated diagnostic quality comparable to that of CT, particularly in lesion delineation. In addition to the unique information that conventional MRI can provide, ZTE-MRI can provide additional information about osseous structures similar to that provided by CT, which we believe will be valuable in the future.
6.Diagnostic Value of Zero Echo Time Magnetic Resonance Imaging for Pediatric Osseous Pathologies
Soojin KIM ; Young Hun CHOI ; Jae Won CHOI ; Yeon Jin CHO ; Seunghyun LEE ; Jae Yeon HWANG ; Jung-Eun CHEON
Investigative Magnetic Resonance Imaging 2024;28(4):184-192
Purpose:
This study aimed to determine whether zero echo time magnetic resonance imaging (ZTE-MRI), as an alternative imaging modality, and conventional computed tomography (CT) have similar diagnostic qualities for assessing pediatric osseous pathologies.
Materials and Methods:
Twenty-six sets of pediatric musculoskeletal CT and MRI scans (15 boys and 11 girls; mean age, 12 ± 4 years; range, 5–23 years) acquired at Seoul National University Children’s Hospital (January 2021 to November 2023) were retrospectively evaluated. CT-like images from ZTE-MRI were generated using grayscale inversion. Two radiologists independently assessed ZTE-MRI image quality (S anat) on a 5-point scale (1 = nondiagnostic, 5 = excellent) and a comparative scale (–2 = CT greater, 0 = same, 2 = ZTE-MRI greater) for lesion delineation (Scomp). The confidence interval of proportions and intraclass correlation coefficient were calculated to assess inter-rater agreement, and Wilcoxon rank-sum test, Mann–Whitney U test, or paired t-test was used to compare image quality or cortical thickness between the modalities.
Results:
ZTE-MRI demonstrated diagnostic quality (S anat ≥ 3) in 85%–96% of the cases, 89%–96% for cortical delineation, 92%–100% for intramedullary cavity (IMC) delineation, and 92% for lesion delineation. Compared with conventional CT, ZTE-MRI showed comparable diagnostic power (Scomp ≥ –1) in 92%–96% of the cases, with Scomp scores indicating no significant difference in lesion delineation (p = 0.53 in reader 1 and p = 0.25 in reader 2). There was a preference for CT over ZTE-MRI in terms of overall image quality and delineation of the cortex and IMC (p < 0.001). Cortical thickness was not significantly different (p = 0.11) between ZTE-MRI and CT.
Conclusion
ZTE-MRI demonstrated diagnostic quality comparable to that of CT, particularly in lesion delineation. In addition to the unique information that conventional MRI can provide, ZTE-MRI can provide additional information about osseous structures similar to that provided by CT, which we believe will be valuable in the future.
7.Diagnostic Value of Zero Echo Time Magnetic Resonance Imaging for Pediatric Osseous Pathologies
Soojin KIM ; Young Hun CHOI ; Jae Won CHOI ; Yeon Jin CHO ; Seunghyun LEE ; Jae Yeon HWANG ; Jung-Eun CHEON
Investigative Magnetic Resonance Imaging 2024;28(4):184-192
Purpose:
This study aimed to determine whether zero echo time magnetic resonance imaging (ZTE-MRI), as an alternative imaging modality, and conventional computed tomography (CT) have similar diagnostic qualities for assessing pediatric osseous pathologies.
Materials and Methods:
Twenty-six sets of pediatric musculoskeletal CT and MRI scans (15 boys and 11 girls; mean age, 12 ± 4 years; range, 5–23 years) acquired at Seoul National University Children’s Hospital (January 2021 to November 2023) were retrospectively evaluated. CT-like images from ZTE-MRI were generated using grayscale inversion. Two radiologists independently assessed ZTE-MRI image quality (S anat) on a 5-point scale (1 = nondiagnostic, 5 = excellent) and a comparative scale (–2 = CT greater, 0 = same, 2 = ZTE-MRI greater) for lesion delineation (Scomp). The confidence interval of proportions and intraclass correlation coefficient were calculated to assess inter-rater agreement, and Wilcoxon rank-sum test, Mann–Whitney U test, or paired t-test was used to compare image quality or cortical thickness between the modalities.
Results:
ZTE-MRI demonstrated diagnostic quality (S anat ≥ 3) in 85%–96% of the cases, 89%–96% for cortical delineation, 92%–100% for intramedullary cavity (IMC) delineation, and 92% for lesion delineation. Compared with conventional CT, ZTE-MRI showed comparable diagnostic power (Scomp ≥ –1) in 92%–96% of the cases, with Scomp scores indicating no significant difference in lesion delineation (p = 0.53 in reader 1 and p = 0.25 in reader 2). There was a preference for CT over ZTE-MRI in terms of overall image quality and delineation of the cortex and IMC (p < 0.001). Cortical thickness was not significantly different (p = 0.11) between ZTE-MRI and CT.
Conclusion
ZTE-MRI demonstrated diagnostic quality comparable to that of CT, particularly in lesion delineation. In addition to the unique information that conventional MRI can provide, ZTE-MRI can provide additional information about osseous structures similar to that provided by CT, which we believe will be valuable in the future.
8.Relapse Rates of Ulcerative Colitis in Remission and Factors Related to Relapse.
Byoung Joon PARK ; Kwang Jae LEE ; Jae Chul HWANG ; Sung Jae SIN ; Jae Yeon CHUNG ; Sung Won CHO
The Korean Journal of Gastroenterology 2008;52(1):21-26
BACKGROUND/AIMS: Ulcerative colitis (UC) is a chronic inflammatory bowel disease with heterogeneous clinical features. Data on the disease course and prognosis of UC patients who have been regularly treated are lacking. We aimed to investigate relapse rates of UC in remission and factors related to relapse. METHODS: We retrospectively analyzed clinical courses of 84 patients (43 males, median age 43 years, ranged 20-73 years) diagnosed as UC at Ajou University Hospital between January 1997 and December 2005 based on clinical, endoscopic and pathologic findings, and who were regularly followed for at least one year after the remission. RESULTS: Study subjects consisted of 32 proctitis (38%), 21 left-sided colitis (25%), and 31 subtotal or total colitis (37%). Of 84 patients, relapse was observed in 52 patients (62%) during the follow-up period (ranged 1-9 years). The relapse rate was 24%, 41%, 51%, 65%, 71%, and 79% at 1 year, 2 years, 3 years, 4 years, 5 years and 6 years, respectively. Among sex, age, hemoglobin, ESR, and the extent of disease on admission, decrease of hemoglobin level was the only independent factor related to relapse (odds ratio=2.67, 95% CI (1.32-5.42), p<0.01). CONCLUSIONS: In Korea, relapse of UC in remission is not rare. Decrease of hemoglobin level is an independent risk factor related to its relapse, while the extent of disease is not.
Adult
;
Aged
;
Anti-Inflammatory Agents, Non-Steroidal/therapeutic use
;
Antimetabolites/therapeutic use
;
Azathioprine/therapeutic use
;
Chronic Disease
;
Colitis, Ulcerative/*diagnosis/*epidemiology/therapy
;
Data Interpretation, Statistical
;
Female
;
Follow-Up Studies
;
Hemoglobins/analysis
;
Humans
;
Male
;
Mesalamine/therapeutic use
;
Middle Aged
;
Odds Ratio
;
Recurrence
;
Retrospective Studies
;
Risk Factors
;
Time Factors
9.A case of Intramural Pregnancy following currettage , treated with Laparoscopic exicision and MTX .
Jae Yeon KIM ; Jae Joo LEE ; Jung Ho SONG ; Jae Gyung YOO ; Young Ryul CHOI ; Mi Sun LEE ; young Mi LEE ; In Soo HWANG
Korean Journal of Obstetrics and Gynecology 2000;43(11):2045-2049
Intramural pregnancy is one of the rarest form of ectopic pregnancy that only 20 cases have been reported in the world so far. Pathologically, the location of the gestational sac is completely isolated from the uterine cavity and entirely surrounded by myometrium without any contact of endometrium. Many reports noted that there would be possible relationship between the intramural pregnancy and prior uterine traumatic factor- curettage, cesarean section, myomectomy, salpingectomy, and manual removal of the placenta and so on. We have recently experienced a case of intramural pregnancy following curettage, managed completely by the laparoscopic excision and additive single dose intramuscular MTX treatment. So, we report this case with a brief review of the literature.
Animals
;
Cesarean Section
;
Curettage
;
Endometrium
;
Female
;
Gestational Sac
;
Mice
;
Myometrium
;
Placenta
;
Pregnancy*
;
Pregnancy, Ectopic
;
Salpingectomy
10.A Clinical Study of Periventricular-Intraventricular Hemorrhage in Very Low Birth Weight Infants.
Myoung Jae CHEY ; Young Pyo CHANG ; Jung Hwan CHOI ; Yong Seung HWANG ; Chong Ku YUN ; In One KIM ; Kyung Mo YEON
Journal of the Korean Pediatric Society 1990;33(10):1341-1352
No abstract available.
Hemorrhage*
;
Humans
;
Infant*
;
Infant, Very Low Birth Weight*