1.Diagnosis and Treatment of Eosinophilic Esophagitis
Su Jin KIM ; Cheol Woong CHOI ; Cheong Su HWANG
The Korean Journal of Gastroenterology 2022;79(3):99-108
Eosinophilic esophagitis (EoE) is a chronic, immune/antigen-mediated esophageal disease characterized by symptoms of esophageal dysfunction and eosinophil-predominant inflammation. The diagnostic criteria for EoE have changed with our growing knowledge over the past two decades. Esophageal eosinophilia, which responds histologically to a proton pump inhibitor (PPI) is not a distinct disease but a subset of EoE. An endoscopic scoring system that relies on the assessment of exudates, rings, edema, furrows, and strictures is a useful tool for assessing endoscopic severity. PPIs are regarded as safe and effective first-line treatments for EoE. Oral topical corticosteroids or dietary therapy are also options for first-line treatment. Endoscopic dilation is effective for relieving the dysphagia symptoms of a patient with an esophageal stricture.
4.Analysis of Predictive Factors for Lung Injury after Forward-Planned Intensity-Modulated Radiotherapy in Whole Breast Irradiation.
Haeyoung KIM ; Hoonsik BAE ; Me Yeon LEE ; Kwang Ho CHEONG ; Kyoung Ju KIM ; Taejin HAN ; Sei Kwon KANG ; Soah PARK ; Taejin HWANG ; Jai Woong YOON ; Lee Su KIM
Journal of Breast Cancer 2014;17(1):69-75
PURPOSE: This study was performed to assess frequency, timings of occurrence, and predictors of radiologic lung damage (RLD) after forward-planned intensity-modulated radiotherapy (FIMRT) for whole breast irradiation. METHODS: We retrospectively reviewed medical records of 157 breast cancer patients and each of their serial chest computed tomography (CT) taken 4, 10, 16, and 22 months after completion of breast radiotherapy (RT). FIMRT was administered to whole breast only (n=152), or whole breast and supraclavicular regions (n=5). Dosimetric parameters, such as mean lung dose and lung volume receiving more than 10 to 50 Gy (V10-V50), and clinical parameters were analyzed in relation to radiologic lung damage. RESULTS: In total, 104 patients (66.2%) developed RLD after whole breast FIMRT. Among the cases of RLD, 84.7% were detected at 4 months, and 15.3% at 10 months after completion of RT. More patients of 47 or younger were found to have RLD at 10 months after RT than patients older than the age (11.7% vs. 2.9%, p=0.01). In univariate and multivariate analyses, age >47 and V40 >7.2% were significant predictors for higher risk of RLD. CONCLUSION: RLD were not infrequently detected in follow-up CT after whole breast FIMRT. More detected cases of RLD among younger patients are believed to have developed at later points after RT than those of older patients. Age and V40 were significant predictors for RLD after whole breast intensity-modulated radiotherapy.
Breast Neoplasms
;
Breast*
;
Follow-Up Studies
;
Humans
;
Lung Injury*
;
Lung*
;
Medical Records
;
Multivariate Analysis
;
Radiotherapy
;
Radiotherapy, Intensity-Modulated*
;
Retrospective Studies
;
Thorax
5.Proteomic analysis of liver in miniature pigs according to developmental stages using two-dimensional electrophoresis and matrix-assisted laser desorption/ionization-time of flight mass spectrometry.
Sun Shin YI ; Sae Jin OH ; Il Yong KIM ; Hye Jung YEOM ; Su Cheong YEOM ; Seung Yong HWANG ; Je Kyung SEONG
Laboratory Animal Research 2013;29(3):162-167
Due to the shortage of human organ donors for transplant, various studies of xenotransplantation, or the use of animal organs instead of human organs, have been carried out. The organs of porcine are thought to be safer and of a more suitable size for xenotransplantationthan those of nonhuman primates. Understanding the levels of expression of proteins, and their post-translational regulation, would be very practical between different species and among developing stages, though the molecular profiling for xenotransplantation has been rarely studied for porcine, while that of human and rodent is well known. Here, in this present study, we report protein regulation of the developing stages of liver (4-day old neonate, 19-day old piglet and 14-month old adult miniature pigs) using 2-DE and MALDI-TOF. From images of the three different stages, a total of 8 spotswhich were differently regulated were identified, and 5 spots were identified with MALDI-TOF MS. The data presented within this study provides critical direction relating to the development of livers of miniature pigs, which will assist future proteome analysis of the liver, and advance our understanding of the hurdles facing xenotransplantaion.
Adult
;
Animal Structures
;
Electrophoresis
;
Humans
;
Infant, Newborn
;
Liver
;
Mass Spectrometry
;
Primates
;
Proteins
;
Proteome
;
Rodentia
;
Swine
;
Tissue Donors
;
Transplantation, Heterologous
;
Transplants
6.Left Adrenal Sarcoidosis.
Yu Sun CHA ; Hyung Jin KIM ; Jae Cheong LEE ; Jinyoung YOO ; Seong Su HWANG ; Hyeon Min CHO
Journal of the Korean Surgical Society 2010;79(4):306-309
We present a 50-year-old woman with left adrenal sarcoidosis. She visited our hospital for right upper quadrant discomfort; she was then evaluated for right upper quadrant discomfort. She had no abnormal findings in the laboratory examination, including hormone study, but a mass was detected at left adrenal gland, incidentally. Initially, we thought the mass as nonfunction adrenal adenoma. After she had undergone laparoscopic left adrenalectomy, she was diagnosed with left adrenal sarcoidosis from her histological findings. Adrenal sarcoidosis is a very rare disease. This case provides insight to the experience of left adrenal sarcoidosis.
Adenoma
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Adrenal Glands
;
Adrenalectomy
;
Female
;
Humans
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Middle Aged
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Rare Diseases
;
Sarcoidosis
7.Proteomic analysis of pancreas in miniature pigs according to developmental stages using two-dimensional electrophoresis and matrix-assisted laser desorption/ionization-time of flight mass spectrometry.
Sun Shin YI ; Il Yong KIM ; Sae Jin OH ; Hye Jung YEOM ; Su Cheong YEOM ; Seung Yong HWANG ; Je Kyung SEONG
Laboratory Animal Research 2014;30(1):1-7
Organ transplantation is limited by the shortage of human organs. Many studies have sought to overcome this hurdle by using animal organs. Porcine organs, especially from miniature pigs, have been used for organ xenotransplantation rather than nonhuman primates. While the molecular profiling for transplantation is well known in humans and rodents, the situation for pigs is almost completely unknown. The present study examined protein regulation of the developing stages of the pancreatic proteome (4 day-old miniature neonate, 19 day-old miniature piglet, and 14 month-old miniature adult pigs) using two-dimensional gel electrophoresis and matrix assisted laser desorption/ionization-time of flight mass spectrometry. Thirteen different expressed spots were observed and nine were identified. The data presented within this study provides critical direction relating to the development of pancreas of miniature pigs, which will assist future proteome analysis of the pancreas, and advance our understanding of the hurdles facing xenotransplantation.
Adult
;
Animal Structures
;
Electrophoresis*
;
Electrophoresis, Gel, Two-Dimensional
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Humans
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Infant
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Infant, Newborn
;
Mass Spectrometry*
;
Organ Transplantation
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Pancreas*
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Primates
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Proteome
;
Rodentia
;
Swine*
;
Transplantation, Heterologous
;
Transplants
8.Negative pathology after endoscopic resection of gastric epithelial neoplasms: importance of pit dysplasia.
Joon Hyung JHI ; Gwang Ha KIM ; Ahrong KIM ; Young Geum KIM ; Cheong Su HWANG ; Sojeong LEE ; Bong Eun LEE ; Geun Am SONG ; Do Youn PARK
The Korean Journal of Internal Medicine 2017;32(4):647-655
BACKGROUND/AIMS: Endoscopic resection (ER) is a well-established treatment modality for gastric epithelial neoplasm. However, there is a discrepancy between forceps biopsy and ER specimen pathology, including a negative pathologic diagnosis (NPD) after ER. It has been suggested that pit dysplasia (PD) is a subtype of gastric dysplasia, and the aim of this study was to assess the significance of PD in cases with NPD after ER for early gastric neoplasms. METHODS: After ER, 29 NPD lesions that had an associated pretreatment forceps biopsy specimen, were correctly targeted during ER, and had no cautery artifact on the resected specimen were included in this study. RESULTS: Sixteen lesions showed PD and 13 had no neoplastic pathology. The initial pretreatment forceps biopsy diagnoses of 29 NPD lesions were low-grade dysplasia (LGD) in 17 lesions, high-grade dysplasia (HGD) in seven lesions, and adenocarcinoma in five lesions, which after review were revised to PD in 19 lesions, LGD in four lesions, adenocarcinoma in two lesions, and no neoplastic pathology in four lesions. Overall, nine lesions (31%) were small enough to be removed by forceps biopsy, four NPD lesions (14%) were initially misinterpreted as neoplastic lesions, and 16 PD lesions (55%) were misinterpreted as NPD lesions on ER slides. CONCLUSIONS: Approximately half of the lesions initially diagnosed as LGD or HGD were subsequently classified as PD. Therefore, including PD as a subtype of gastric dysplasia could reduce the diagnostic discrepancy between initial forceps biopsy and ER specimens.
Adenocarcinoma
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Artifacts
;
Biopsy
;
Cautery
;
Diagnosis
;
Neoplasms, Glandular and Epithelial*
;
Pathology*
;
Stomach
;
Stomach Neoplasms
;
Surgical Instruments
9.Factors Associated with Renal Failure in Children with Primary Vesicoureteral Reflux.
Kyung Mi PARK ; Kyung Hoon PAEK ; Jae Hong MIN ; Jung Su KIM ; Il Soo HA ; Kwang Myung KIM ; Hae Il CHEONG ; Hwang CHOI ; Yong CHOI
Journal of the Korean Pediatric Society 1999;42(7):959-965
PURPOSE: The pathophysiologic mechanisms and risk factors of renal functional deterioration are still controversial. We analyzed the factors associated with renal failure in children with primary vesicoureteral reflux. METHODS: The medical records of 166 children who were diagnosed with primary vesicoureteral reflux from Jan. 1985 to Dec. 1996 in the Department of Pediatrics, Seoul National University Children's Hospital were reviewed retrospectively. The patients were divided into two groups according to renal function: patients with renal failure(RF group) and patients with normal renal function(NRF group). RESULTS: Eighteen(11%) were classified as RF group, and 16(89%) of them were male. Sixteen (89%) of RF group revealed decreased renal function at the time of diagnosis. There was no past history of documented urinary tract infection in 16(89%) of RF group. Patients of RF group had a higher grade of reflux as compared with those of NRF group. Proteinuria and hypertension were found in 16(89%) and 6(33%) of RF group, respectively, while no NRF patients had proteinuria or hypertension. Renal functional deterioration had progressed to end-stage renal disease in 6(33%) of RF group during a mean follow-up of 4.4+/-2.7(range 0.5-12) years. CONCLUSION: Reflux nephropathy and renal scar in children can be prevented, in some cases, by early diagnosis of vesicoureteral reflux and prophylaxis of urinary tract infection. Regular check up for proteinuria and hypertension is essential for early detection of renal dysfunction. However, in other patients, especially in male, renal dysfunction can develop independently on urinary tract infection.
Child*
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Cicatrix
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Diagnosis
;
Early Diagnosis
;
Follow-Up Studies
;
Humans
;
Hypertension
;
Kidney Failure, Chronic
;
Male
;
Medical Records
;
Pediatrics
;
Proteinuria
;
Renal Insufficiency*
;
Retrospective Studies
;
Risk Factors
;
Seoul
;
Urinary Tract Infections
;
Vesico-Ureteral Reflux*
10.Experiences of Renal Transplantation after Correction of Dysfunctional Contracted Bladder.
Yang Jin PARK ; Jongwon HA ; Seung Kee MIN ; Yon Su KIM ; Kwang Myung KIM ; Seung June OH ; Hwang CHOI ; Il Soo HA ; Yong CHOI ; Hae Il CHEONG ; Sang Joon KIM
The Journal of the Korean Society for Transplantation 2008;22(2):220-225
BACKGROUND: There is some controversy about the safety of renal transplantation in patients with an augmentation cystoplasty. The purpose of this study is to assess the early and long-term results of renal transplantation in 6 patients who underwent augmentation cystoplasty to correct bladder dysfunction. METHODS: We retrospectively reviewed the surgical outcome of renal transplants in 6 recipients with augmentation cystoplasty including one ileal conduit. The etiology of bladder dysfunction was neurogenic bladder with detrusor hyperreflexia (4 pediatric patients) and renal tuberculosis (2 adult patients). Augmentation cystoplasty was performed before transplantation in all patients. The bowel segments used in the augmentation cystoplasty included stomach in 2 (including one revision case with ileum), ileum in 3, ileocecal segments in 1, and sigmoid colon in 1 patients. The mean patient's age at transplantation was 25.5 years. Four transplants were from living donors. The donor ureter was anastomosed to ileal conduit in 1, native bladder in 2, and the bowel segment in 3 patients. RESULTS: All transplanted kidneys were functioning at a mean follow-up of 103 months (range 5 to 220). The mean serum creatinine level was 1.0 mg/dl (range 0.7 to 1.8). Acute rejection was diagnosed in protocol biopsy in one patient without graft function deterioration. Four patients admitted for febrile urinary infection during the follow up periods. CONCLUSIONS: Augmentation cystoplasty is a safe and effective method to restore the renal function in patients who have noncompliant bladders. Renal transplantation can be performed safely after augmentation cystoplasty.
Adult
;
Biopsy
;
Colon, Sigmoid
;
Contracts
;
Creatinine
;
Follow-Up Studies
;
Humans
;
Ileum
;
Kidney
;
Kidney Transplantation
;
Living Donors
;
Reflex, Abnormal
;
Rejection (Psychology)
;
Retrospective Studies
;
Stomach
;
Tissue Donors
;
Transplants
;
Tuberculosis, Renal
;
Ureter
;
Urinary Bladder
;
Urinary Bladder, Neurogenic
;
Urinary Diversion