Brunn nests are the most common proliferative lesions of the bladder uroepithelium, but exuberant proliferation can mimic bladder tumor on radiologic imaging and cystoscopy. We describe a case of pathologically proven Brunn nests in a 34-year-old man, misdiagnosed as bladder tumor on preoperative imaging studies.
Adult ; Cystoscopy ; Humans ; Urinary Bladder Neoplasms* ; Urinary Bladder*

Human-derived materials are a crucial element of research in the life sciences. The Korea Biobank Network (KBN) portal is a shared open platform that provides the nationʼs most extensive disease resources, possessed by Human Bioresource Unit Banks of the KBN, to the public, including those in the fields of industry, academia, and research.This platform was developed to increase the efficient use of national disease resources. In the KBN portal, the current status of disease resources collected in Korea can be checked online. Human bioresources and clinical information are provided to consumers through systematic search and efficient distribution programs. Additionally, by simultaneously operating the KBN Distribution Support Center, we are working to support the rapid and convenient distribution of human resources in response to the needs of consumers. To effectively utilize the open human bioresource sharing platform, it is necessary to introduce an integrated clinical information management system. Currently, the KBN is in the process of establishing standard terminology for data and applying a common data model for the integrated management of various clinical information held by the KBN. We provide communications through the KBN portal, which is interconnected with the distribution support center, regional biobanks, and consumers. In conclusion, the KBN portal will provide open innovation by creating a business or service model by delivering shared open data and internalizing external innovative capabilities.

OBJECTIVE: To compare the efficacy of GnRH antagonist multi dose protocol in controlled ovarian hyperstimulation (COH) for IVF-ET or ICSI with GnRH agonist long protocol. METHODS: From January 2003 to December 2004, total of 583 cycles which underwent IVF-ET or ICSI using r-FSH were enrolled in this study. 447 cycles of the study group were performed in controlled ovarian hyperstimulation by using GnRH antagonist multi dose protocol and 136 cycles of the control group were performed by using GnRH long protocol. We compared patients characteristics, controlled ovarian hyperstimulation outcomes and IVF-ET outcomes between two groups. RESULTS: Patients characteristics and baseline hormone levels were not different between the two groups. The duration of stimulation was significantly shorter in study group comparing with control group (12.8+/-1.5 days vs 13.7+/-1.7 days, p<0.05). There were no differences between the two groups in the number of follicles, endometrial thickness and serum E2 level on hCG day. The pregnancy rate seemed to be lower in the study group (32.4% vs 35.4%), but the difference was not statistically significant. There were also no differences in number of oocytes retrieved, matured oocytes, fertilized oocytes and transferred embryos between two groups. CONCLUSION: GnRH antagonist multi dose protocol in COH might be a simple and effective method compared with GnRH agonist long protocol.
Embryonic Structures ; Gonadotropin-Releasing Hormone* ; Humans ; Oocytes ; Pregnancy Rate ; Sperm Injections, Intracytoplasmic

Background/Aims: Chronic gastroesophageal reflux disease (GERD) requires symptom relief and treatment of associated conditions. In this study, we aimed to compare anti-reflux mucosectomy (ARMS) and Stretta radiofrequency (SRF) for treating patients with chronic GERD who are unresponsive to proton pump inhibitors (PPIs) and to identify the indications for each procedure. Methods: Data of patients who underwent ARMS or SRF between March 2021 and April 2023 were analyzed. Changes in GERD questionnaire (GERDQ) scores, endoscopic Los Angeles (LA) grade, flap valve grade (FVG) based on Hill’s type, EndoFLIP distensibility index (DI), endoscopic Barrett’s epithelium (BE) resolution rate, and PPI withdrawal rate were compared between the two groups. Results: Improvements in the GERDQ scores and PPI withdrawal rates were similar between the groups. The ARMS group showed significantly better changes in endoscopic LA grade, FVG, and EndoFLIP DI than the SRF group. The complications were more prevalent in the ARMS group than in the SRF group. Conclusions The change in endoscopic LA grade before and after the procedure was significantly higher in the ARMS group than in the SRF group. Significant improvements in endoscopic FVG, BE resolution, and EndoFLIP DI were observed only with the ARMS group.

Background/Aims: Chronic gastroesophageal reflux disease (GERD) requires symptom relief and treatment of associated conditions. In this study, we aimed to compare anti-reflux mucosectomy (ARMS) and Stretta radiofrequency (SRF) for treating patients with chronic GERD who are unresponsive to proton pump inhibitors (PPIs) and to identify the indications for each procedure. Methods: Data of patients who underwent ARMS or SRF between March 2021 and April 2023 were analyzed. Changes in GERD questionnaire (GERDQ) scores, endoscopic Los Angeles (LA) grade, flap valve grade (FVG) based on Hill’s type, EndoFLIP distensibility index (DI), endoscopic Barrett’s epithelium (BE) resolution rate, and PPI withdrawal rate were compared between the two groups. Results: Improvements in the GERDQ scores and PPI withdrawal rates were similar between the groups. The ARMS group showed significantly better changes in endoscopic LA grade, FVG, and EndoFLIP DI than the SRF group. The complications were more prevalent in the ARMS group than in the SRF group. Conclusions The change in endoscopic LA grade before and after the procedure was significantly higher in the ARMS group than in the SRF group. Significant improvements in endoscopic FVG, BE resolution, and EndoFLIP DI were observed only with the ARMS group.

Background/Aims: Chronic gastroesophageal reflux disease (GERD) requires symptom relief and treatment of associated conditions. In this study, we aimed to compare anti-reflux mucosectomy (ARMS) and Stretta radiofrequency (SRF) for treating patients with chronic GERD who are unresponsive to proton pump inhibitors (PPIs) and to identify the indications for each procedure. Methods: Data of patients who underwent ARMS or SRF between March 2021 and April 2023 were analyzed. Changes in GERD questionnaire (GERDQ) scores, endoscopic Los Angeles (LA) grade, flap valve grade (FVG) based on Hill’s type, EndoFLIP distensibility index (DI), endoscopic Barrett’s epithelium (BE) resolution rate, and PPI withdrawal rate were compared between the two groups. Results: Improvements in the GERDQ scores and PPI withdrawal rates were similar between the groups. The ARMS group showed significantly better changes in endoscopic LA grade, FVG, and EndoFLIP DI than the SRF group. The complications were more prevalent in the ARMS group than in the SRF group. Conclusions The change in endoscopic LA grade before and after the procedure was significantly higher in the ARMS group than in the SRF group. Significant improvements in endoscopic FVG, BE resolution, and EndoFLIP DI were observed only with the ARMS group.

Catamenial hemoptysis is a rare condition, characterized by recurrent hemoptysis associated with the presence of intrapulmonary or endobronchial endometrial tissue. Therapeutic strategies proposed for intrapulmonary endometriosis with catamenial hemoptysis consist of medical treatments and surgery. Bronchial artery embolization is a well-established modality in the management of massive or recurrent hemoptysis, but has seldom been used for the treatment of catamenial hemoptysis. We report a case of catamenial hemoptysis associated with pulmonary parenchymal endometriosis, which was successfully treated by a bronchial artery embolization.
Bronchial Arteries* ; Embolization, Therapeutic ; Endometriosis ; Female ; Hemoptysis*

Esophageal duplication (ED) is rarely diagnosed in adults and is usually asymptomatic. Especially, ED that is connected to the esophagus through a tubular communication and combined with bronchoesophageal fistula (BEF) is extremely rare and has never been reported in the English literature. This condition is very difficult to diagnose. Although some combinations of several modalities, such as upper gastrointestinal endoscopy, esophagography, computed tomography, magnetic resonance imaging, and endoscopic ultrasonography, can be used for the diagnosis, the results might be inconclusive. Here, we report on a patient with communicating tubular ED that was incidentally diagnosed on the basis of endoscopy and esophagography during the postoperational evaluation of BEF.
Adult ; Bronchial Fistula ; Diagnosis ; Endoscopy ; Endoscopy, Gastrointestinal ; Endosonography ; Esophageal Fistula ; Esophagus ; Fistula* ; Humans ; Magnetic Resonance Imaging

The congenital nasal piriform aperture stenosis (CNPAS) is a rare cause of neonatal airway obstruction and could be easily mistaken as the choanal stenosis or atresia. The piriform aperture is a term used to refer to the anterior nasal openings. The nasal airway obstruction in the neonate can result in respiratory difficulties and may be going to life threatening consequences. Computed tomography demonstrates in detail the underlying anatomic abnormalities which allows differentiation of the CNPAS from other upper airway abnormalities. We reported a case of CNPAS, a 1-month-old male infant presented with respiratory difficulties. Shortly after birth, he had mild respiratory difficulties and there was difficulty passing a nasal catheter intranasally. But he was improved through only conservative management and discharged at the age of 5 days. At the age of 1 month, CT scan revealed bilateral CNPAS.
Airway Obstruction ; Catheters ; Constriction, Pathologic* ; Humans ; Infant ; Infant, Newborn ; Male ; Nasal Obstruction ; Parturition ; Tomography, X-Ray Computed

To evaluate the effectiveness of the human umbilical cord blood (HUCB) transplantation for the treatment of intrinsic sphincter deficiency (ISD), we analyzed the short term effects of HUCB mononuclear cell transplantation in rats with induced-ISD. ISD was induced in rats by electro-cauterization of periurethral soft tissue with HUCB mononuclear cell injection after 1 week. The sphincter function measured by mean leak point pressure was significantly improved in the experimental group compared to the control group at 4 weeks. (91.75+/-18.99 mmHg vs. 65.02+/-22.09 mmHg, P=0.001). Histologically, the sphincter muscle was restored without damage while in the control group it appeared markedly disrupted with atrophic muscle layers and collagen deposit. We identified injected HUCB cells in the tissue sections by Di-I signal and Prussian blue staining. HUCB mononuclear cell injection significantly improved urethral sphincter function, suggesting its potential efficacy in the treatment of ISD.
Animals ; Cells, Cultured ; Cord Blood Stem Cell Transplantation/*methods ; Humans ; Leukocytes, Mononuclear/*transplantation ; Rats ; Rats, Sprague-Dawley ; Treatment Outcome ; Urinary Incontinence, Stress/diagnosis/*physiopathology/*surgery ; Urologic Surgical Procedures/*methods