1.A Case of Gastric Carcinosarcoma with Neuroendocrine and Smooth Muscle Differentiation.
Se Min JANG ; Si Hyong JANG ; Kyueng Whan MIN ; Woong NA ; Young Jin JUN ; Seung Sam PAIK
Korean Journal of Pathology 2010;44(1):87-91
Carcinosarcoma of the stomach is a rarely occurring malignant biphasic tumor that consists of both carcinomatous and sarcomatous components simultaneously in a single tumor. The common carcinoma component is tubular or papillary adenocarcinoma and the mesenchymal sarcomatous components are variable and these include leiomyosarcoma, rhabdomyosarcoma, osteosarcoma and chondrosarcoma. However, neuroendocrine carcinomatous differentiation in the carcinomatous component is extremely rare. We present here a rare gastric carcinosarcoma that demonstrated neuroendocrine carcinomatous and leiomyosarcomatous differentiation in a 47-year-old man.
Adenocarcinoma, Papillary
;
Carcinosarcoma
;
Chondrosarcoma
;
Humans
;
Leiomyosarcoma
;
Middle Aged
;
Muscle, Smooth
;
Neurosecretory Systems
;
Osteosarcoma
;
Rhabdomyosarcoma
;
Stomach
2.An Unusual Meningothelial Element in a Hairy Polyp of the Hard Palate.
Si Hyong JANG ; Kyueng Whan MIN ; Woong NA ; Se Min JANG ; Seung Sam PAIK
Korean Journal of Pathology 2008;42(5):311-313
Hairy polyps are a rare malformations of bigerminal origin that comprise of both ectodermal and mesodermal elements. Meningothelial elements are an extremely rare pathologic finding in hairy polyps. Here we report a case of a hairy polyp with a meningothelial element, which originated from the hard palate. A 1-year-old boy was evaluated for an intraoral mass accompanied by multiple congenital anomalies. A small polypoid mass was noted at the midline of the hard palate. The lesion had central fibroconnective tissue with an unusual stromal component showing reticulated anastomosing pseudovascular patterns. Immunohistochemical staining of the cells lining the pseudovascular spaces and the interstitial cells revealed vimentin and epithelial membrane antigen positivity.
3.Cystic Lymphangioma of the Breast in an Adult Woman.
Kyueng Whan MIN ; Si Hyong JANG ; Woong NA ; Se Min JANG ; Young Jin JUN ; Ki Seok JANG ; Seung Sam PAIK
Korean Journal of Pathology 2008;42(4):244-246
Cystic lymphangioma is also known as cystic hygroma, and this is a congenital malformation of the lymphatic system. Most lymphangiomas are present at birth and they are diagnosed by the age of 2. They are mostly located in the neck or axillary region. The breast as a site of origin is an extremely unusual location, and especially in adults. We report here on a case of cystic lymphangioma in a 36-year-old woman. Physical examination revealed a tender cystic mass in the upper outer quadrant of the right breast. Ultrasonography revealed an irregular hypoechoic mass lesion that was associated with irregular duct dilatation and several enlarged axillary lymph nodes. After the operation, the mass was revealed to be a cystic lymphangioma. Although it is very rare, cystic lymphangioma should be considered in the differential diagnosis of a breast mass in adults.
Adult
;
Male
;
Female
;
Humans
;
Diagnosis, Differential
4.Changes of Intracellular Water by Hemodialysis in Diabetic and Non-diabetic ESRD Patients: Analysis with MF-BIA.
Se Na JANG ; Hyung Wook KIM ; Young Shin SHIN ; Dong Chan JIN
Korean Journal of Nephrology 2009;28(6):603-609
PURPOSE: During hemodialysis, various methods are used to evaluate adequate water removal; however, few of them are currently clinically applicable. To evaluate the differences of body fluid changes, we have compared changes of ICW (intracellular water) and ECW (extracellular water) before and after hemodialysis in diabetic and non-diabetic patients with MF-BIA. Also various factors influencing in this transcellular body fluid shift were evaluated. METHODS: TBW (total body water), ICW, ECW were measured before and after hemodialysis by using MF-BIA in 85 stable maintenance hemodialysis patients in a university hospital. Among these patients, 30 patients (mean age 55.6+/-12.4 year-old, average dialysis duration 26 months) were diabetic, while 55 patients (mean age 47.1+/-13.0 year-old, average dialysis duration 69 months) were non-diabetic. RESULTS: ECW/TBW in diabetic and non-diabetic patients were 0.338+/-0.02, 0.334+/-0.02, respectively. There was no significant difference between two groups. There were also no significant differences in the sex, age, duration of dialysis, BMI, hemoglobin, total protein, osmolarity of ICW loss/TBW removal. But there was a significant positive correlation between the increase in ultrafiltration volume (UFV:%) and ICW loss in diabetic patients (R=0.51, p=0.019); however, such correlation was not observed in non-diabetic patients. CONCLUSION: We found that ICW of diabetic patients moved to extracellular spaces even before achieving appropriate dry body weight or less amount of fluid was removed compared to non-diabetic patients. This finding might imply diabetic ESRD patient has relatively low cellular membrane integrity and oncotic pressure maintenance ability to physical transmembrane pressure.
Body Fluids
;
Body Weight
;
Diabetes Mellitus
;
Dialysis
;
Electric Impedance
;
Extracellular Space
;
Hemoglobins
;
Humans
;
Kidney Failure, Chronic
;
Maintenance
;
Membranes
;
Osmolar Concentration
;
Renal Dialysis
;
Ultrafiltration
5.Induction of Animal Model of Scleroderma with Repeated Injection of Bleomycin.
Sang Koo LEE ; Young In NA ; Se Min JANG ; Seung Sam PAIK ; Yoon Kyoung SUNG ; Jae Bum JUN
The Journal of the Korean Rheumatism Association 2009;16(2):95-99
OBJECTIVE: To induce a mouse model of scleroderma with repeated bleomycin injections for research into human scleroderma at our research laboratory. METHODS: The protocol of Yamamoto et al. was replicated to establish the bleomycin-induced mouse model of scleroderma. RESULTS: A mouse model of scleroderma was induced by repeated subcutaneous injections of bleomycin. The dermal thickness increased with homogeneous and thickened collagen bundles. Semiquantitative measurements of dermal fibrosis were prominent in bleomycin-treated mice. CONCLUSION: A mouse model of scleroderma was induced with repeated injections of bleomycin at our laboratory.
Animals
;
Bleomycin
;
Collagen
;
Fibrosis
;
Humans
;
Injections, Subcutaneous
;
Mice
;
Models, Animal
6.Assessing Trainee Needs for Developing Response Scenarios and Training Manuals for Unknown Infectious Diseases: Insights From a Focus Group Interview
Wooyoung JANG ; Jinnam KIM ; Dabin EOM ; Yeseul NA ; Choseok YOON ; Se Yoon PARK ; Bongyoung KIM
Journal of Korean Medical Science 2025;40(3):e81-
This study employed focus group interviews (FGIs) to evaluate the preparedness and training requirements for an emerging infectious disease response system in the Republic of Korea.Based on the FGIs, the critical role of interdepartmental cooperation in responding to emerging infectious diseases was identified, with agencies such as public health centers, police, and fire services playing key roles in scene control, decontamination, and patient transport. Frequent staff turnover and a lack of trained personnel at local government levels were significant challenges, necessitating the development of training materials for unskilled workers. Civil complaints, common during outbreaks, require public officials to be educated on legal frameworks and the management of patients’ rights. The absence of standardized procedures for managing patients, such as bed assignments considering underlying conditions and sample collection, underscores the need for comprehensive guidelines.Interviewees emphasized cross-departmental training, detailed manuals, and legal education to improve infectious disease response capabilities.
7.Assessing Trainee Needs for Developing Response Scenarios and Training Manuals for Unknown Infectious Diseases: Insights From a Focus Group Interview
Wooyoung JANG ; Jinnam KIM ; Dabin EOM ; Yeseul NA ; Choseok YOON ; Se Yoon PARK ; Bongyoung KIM
Journal of Korean Medical Science 2025;40(3):e81-
This study employed focus group interviews (FGIs) to evaluate the preparedness and training requirements for an emerging infectious disease response system in the Republic of Korea.Based on the FGIs, the critical role of interdepartmental cooperation in responding to emerging infectious diseases was identified, with agencies such as public health centers, police, and fire services playing key roles in scene control, decontamination, and patient transport. Frequent staff turnover and a lack of trained personnel at local government levels were significant challenges, necessitating the development of training materials for unskilled workers. Civil complaints, common during outbreaks, require public officials to be educated on legal frameworks and the management of patients’ rights. The absence of standardized procedures for managing patients, such as bed assignments considering underlying conditions and sample collection, underscores the need for comprehensive guidelines.Interviewees emphasized cross-departmental training, detailed manuals, and legal education to improve infectious disease response capabilities.
8.Assessing Trainee Needs for Developing Response Scenarios and Training Manuals for Unknown Infectious Diseases: Insights From a Focus Group Interview
Wooyoung JANG ; Jinnam KIM ; Dabin EOM ; Yeseul NA ; Choseok YOON ; Se Yoon PARK ; Bongyoung KIM
Journal of Korean Medical Science 2025;40(3):e81-
This study employed focus group interviews (FGIs) to evaluate the preparedness and training requirements for an emerging infectious disease response system in the Republic of Korea.Based on the FGIs, the critical role of interdepartmental cooperation in responding to emerging infectious diseases was identified, with agencies such as public health centers, police, and fire services playing key roles in scene control, decontamination, and patient transport. Frequent staff turnover and a lack of trained personnel at local government levels were significant challenges, necessitating the development of training materials for unskilled workers. Civil complaints, common during outbreaks, require public officials to be educated on legal frameworks and the management of patients’ rights. The absence of standardized procedures for managing patients, such as bed assignments considering underlying conditions and sample collection, underscores the need for comprehensive guidelines.Interviewees emphasized cross-departmental training, detailed manuals, and legal education to improve infectious disease response capabilities.
9.Assessing Trainee Needs for Developing Response Scenarios and Training Manuals for Unknown Infectious Diseases: Insights From a Focus Group Interview
Wooyoung JANG ; Jinnam KIM ; Dabin EOM ; Yeseul NA ; Choseok YOON ; Se Yoon PARK ; Bongyoung KIM
Journal of Korean Medical Science 2025;40(3):e81-
This study employed focus group interviews (FGIs) to evaluate the preparedness and training requirements for an emerging infectious disease response system in the Republic of Korea.Based on the FGIs, the critical role of interdepartmental cooperation in responding to emerging infectious diseases was identified, with agencies such as public health centers, police, and fire services playing key roles in scene control, decontamination, and patient transport. Frequent staff turnover and a lack of trained personnel at local government levels were significant challenges, necessitating the development of training materials for unskilled workers. Civil complaints, common during outbreaks, require public officials to be educated on legal frameworks and the management of patients’ rights. The absence of standardized procedures for managing patients, such as bed assignments considering underlying conditions and sample collection, underscores the need for comprehensive guidelines.Interviewees emphasized cross-departmental training, detailed manuals, and legal education to improve infectious disease response capabilities.
10.Cyclic Phytosphingosine-1-Phosphate Primed Mesenchymal Stem Cells Ameliorate LPS-Induced Acute Lung Injury in Mice
Youngheon PARK ; Jimin JANG ; Jooyeon LEE ; Hyosin BAEK ; Jaehyun PARK ; Sang-Ryul CHA ; Se Bi LEE ; Sunghun NA ; Jae-Woo KWON ; Seok-Ho HONG ; Se-Ran YANG
International Journal of Stem Cells 2023;16(2):191-201
Background and Objectives:
O-cyclic phytosphingosine-1-phosphate (cP1P) is a synthetic chemical and has a structure like sphingosine-1-phosphate (S1P). S1P is known to promote cell migration, invasion, proliferation, and anti-apoptosis through hippocampal signals. However, S1P mediated cellular-, molecular mechanism is still remained in the lung.Acute lung injury (ALI) and its severe form acute respiratory distress syndrome (ARDS) are characterized by excessive immune response, increased vascular permeability, alveolar-peritoneal barrier collapse, and edema. In this study, we determined whether cP1P primed human dermal derived mesenchymal stem cells (hdMSCs) ameliorate lung injury and its therapeutic pathway in ALI mice.
Methods:
and Results: cP1P treatment significantly stimulated MSC migration and invasion ability. In cytokine array, secretion of vascular-related factors was increased in cP1P primed hdMSCs (hdMSCcP1P ), and cP1P treatment induced inhibition of Lats while increased phosphorylation of Yap. We next determined whether hdMSCcP1P reduce inflammatory response in LPS exposed mice. hdMSCcP1P further decreased infiltration of macrophage and neutrophil, and release of TNF-α, IL-1β, and IL-6 were reduced rather than naïve hdMSC treatment. In addition, phosphorylation of STAT1 and expression of iNOS were significantly decreased in the lungs of MSCcP1P treated mice.
Conclusions
Taken together, these data suggest that cP1P treatment enhances hdMSC migration in regulation of Hippo signaling and MSCcP1P provide a therapeutic potential for ALI/ARDS treatment.