1.Studies on the relationship between cell proliforation and human cytomegalovirus multiplication: effect of papaverine and methotrexate.
Youn Jeong NAM ; Jae In LEE ; Yong Hoon JIE ; Chan Hee LEE
Journal of the Korean Society of Virology 1991;21(2):193-200
No abstract available.
Cytomegalovirus*
;
Humans*
;
Methotrexate*
;
Papaverine*
2.Reconstruction of Defect on the Nasal Dorsum with Modified Bilateral Rhombic Flap.
Myeung Hoon CHOI ; Jie Hyun JEON ; Yong Ju KIM ; Kyu Chul HWANG ; Hae Jun SONG ; Chil Hwan OH ; Dong Soo YU
Korean Journal of Dermatology 2006;44(5):608-611
The skin over the nose is less mobile for primary closure of defects. In addition to skin graft and secondary intention healing, there are various local flap techniques and their modifications for the reconstruction of nasal defects. Imprecise engineering of wound repair methods and contracture can lead to twisting of the nose and distortion of surrounding anatomic structures such as the nasal ala and paranasal sulcus. The skin defects on the nasal dorsum were reconstructed with a modified bilateral rombic flap. In our case, there were no significant complications and the final result was satisfactory in both functional and cosmetic aspects. Through our experience, we can confirm that the modified bilateral rhombic flap can reconstruct defects on the center area of the nasal dorsum effectively and in a single stage.
Contracture
;
Intention
;
Nose
;
Skin
;
Transplants
;
Wounds and Injuries
3.Evaluation of Three-Dimentional Computerized Tomography Image of the Growing Skull Fracture on the Orbital Roof.
Jie Woong LEE ; Young Soo KIM ; Seong Hoon OH ; Yong KO ; Suck Jun OH ; Nam Kyu KIM ; Kwang Myung KIM
Journal of Korean Neurosurgical Society 1993;22(6):754-760
Growing skull fracture is a rare complication of a closed head injury during infancy and childhood. Most growing skull fracture are located in the parietal region. The authors report a case of growing skull fracture of the orbital roof using three dimentional computerized tomography(3-D CT) imaging, the shpae and the size of defect were clearly demonstrated.
Head Injuries, Closed
;
Orbit*
;
Rabeprazole
;
Skull Fractures*
;
Skull*
4.Growth Patterns of Signet Ring Cell Carcinoma of the Stomach for Endoscopic Resection.
Hyunki KIM ; Jie Hyun KIM ; Yong Chan LEE ; Hoguen KIM ; Young Hoon YOUN ; Hyojin PARK ; Seung Ho CHOI ; Sung Hoon NOH ; Takuji GOTODA
Gut and Liver 2015;9(6):720-726
BACKGROUND/AIMS: It is difficult to precisely detect the lateral margin during endoscopic submucosal dissection (ESD) for signet ring cell carcinoma (SRC) because SRC often expands to lateral direction through the lamina propria. Thus, the aim of this study was to classify the intramucosal spreading patterns of SRC and to analyze the patients' clinicopathological findings according to the spreading patterns. METHODS: The intramucosal spreading patterns of SRC were classified as expansive or infiltrative types. A total of 100 surgical and 42 ESD specimens were reviewed. RESULTS: In the surgical specimens, the proportions of expansive and infiltrative types were 44% and 56%, respectively. The infiltrative type was more commonly associated with old age, atrophy, and intestinal metaplasia in surrounding mucosa and the absence of Helicobacter pylori compared with the expansive type. In ESD specimens, the proportions of expansive and infiltrative types were each 50%. When lateral margin-positive lesions were compared with -negative lesions, larger size, residual lesion, and the lack of a neutrophil infiltration were more significantly associated with lateral margin-positive lesions. All cases with residual tumors in lateral margin-positive lesions were classified as the infiltrative type. CONCLUSIONS: SRC surrounded with atrophy and/or intestinal metaplasia often spreads subepithelially in the margin. This finding may suggest that a larger safety margin is necessary in this type during ESD.
Adult
;
Carcinoma, Signet Ring Cell/*pathology/*surgery
;
Dissection/*methods
;
Female
;
Gastric Mucosa/pathology
;
*Gastroscopy
;
Humans
;
Intestines/pathology
;
Male
;
Metaplasia/pathology
;
Middle Aged
;
Neoplasm Invasiveness
;
Retrospective Studies
;
Stomach/pathology
;
Stomach Neoplasms/*pathology/*surgery
5.Nasality Changes With Age in Normal Korean-Speaking Adults
Jun XU ; Young Ae KANG ; Soo Kyoung PARK ; Young Hoon YOON ; Shang Jie BAI ; Yong De JIN ; Yong Min KIM ; Ki Sang RHA
Clinical and Experimental Otorhinolaryngology 2019;12(1):95-99
OBJECTIVES: This study was performed to investigate the effects of aging on nasality and the influence of age-related changes in nasal cavity volume and nasal patency on nasality. METHODS: A total of 180 healthy Korean-speaking adult volunteers, who had no nasal or voice-related complaints, were enrolled in this study. Nasometry, acoustic rhinometry, and rhinomanometry were performed to obtain the nasalance score, nasal cavity volume, and nasal resistance, respectively. Changes in these parameters with age were analyzed. RESULTS: Nasal cavity volume increased significantly, and nasal resistance decreased significantly, with age. The nasalance scores for the nasal passage and oronasal passage decreased significantly with age, while there were no age-related changes in nasalance scores for the oral passage. CONCLUSION: Nasalance scores for the passages containing nasal consonants decreased with age although significant increases were observed in nasal cavity volume and nasal patency with age. Therefore, the age-related decreases in nasalance scores may result from factors other than changes in the nasal cavity.
Adult
;
Aging
;
Humans
;
Nasal Cavity
;
Rhinomanometry
;
Rhinometry, Acoustic
;
Voice Quality
;
Volunteers
6.Clinicopathologic Features of Submucosal Papillary Gastric Cancer Differ from Those of Other Differentiated-Type Histologies
Seung Yong SHIN ; Jie-Hyun KIM ; Myeong-Cherl KOOK ; Do Youn PARK ; Keun Won RYU ; Il Ju CHOI ; Sung Hoon NOH ; Hyunki KIM ; Yong Chan LEE
Gut and Liver 2021;15(1):44-52
Background/Aims:
Papillary gastric cancer (GC) is classified as differentiated adenocarcinoma, together with well-differentiated (WD) and moderately differentiated (MD) adenocarcinoma. This study evaluated the risk of lymph node metastasis (LNM) in submucosal (SM) invasive papillary GC compared with other differentiated early GC types.
Methods:
This retrospective study involved three tertiary hospitals and enrolled 1,798 lesions with differentiated SM invasive GC treated with curative gastrectomy between March 2001 and December 2012. All pathology slides were reviewed, and clinicopathologic findings associated with LNM, including tumor size, location, gross type, ulceration, depth and width of SM invasion, and lymphovascular invasion (LVI), were analyzed.
Results:
The proportion of SM papillary GC was 2.8% (n=51). SM papillary GC was associated with larger tumor size and deeper and wider SM invasion than other differentiated GC types.LNM was significantly higher in the papillary type than in the MD and WD types. LNM was found in 27.5% of SM papillary GC patients (WD: 9.0%, MD: 21.2%). LVI was the only significant risk factor for LNM in SM papillary GC. The depth or width of SM invasion was not associated with LNM in papillary GC. Lower third location or elevated gross appearance was significantly associated with LVI.
Conclusions
SM papillary GC had the highest LNM rate, with features different from those of other differentiated SM invasive GCs. The treatment strategy for SM papillary GC should be carefully approached, especially for lesions located in the lower third or of the elevated gross type.
7.Helicobacter pylori Eradication Reduces the Metachronous Recurrence of Gastric Neoplasms by Attenuating the Precancerous Process.
Da Hyun JUNG ; Jie Hyun KIM ; Yong Chan LEE ; Sang Kil LEE ; Sung Kwan SHIN ; Jun Chul PARK ; Hyun Soo CHUNG ; Hyunki KIM ; Hoguen KIM ; Yong Hoon KIM ; Jae Jun PARK ; Young Hoon YOUN ; Hyojin PARK
Journal of Gastric Cancer 2015;15(4):246-255
PURPOSE: The importance of Helicobacter pylori eradication after endoscopic resection (ER) of gastric neoplasms remains controversial. In this study, we clarified the importance of H. pylori eradication for metachronous lesions after ER. MATERIALS AND METHODS: This study included 3,882 patients with gastric neoplasms who underwent ER. We included patients infected with H. pylori who received eradication therapy. Among them, 34 patients with metachronous lesions after ER and 102 age- and sex-matched patients (nonmetachronous group) were enrolled. Background mucosal pathologies such as atrophy and intestinal metaplasia (IM) were evaluated endoscopically. The expression levels of CDX1, CDX2, Sonic hedgehog (SHH), and SOX2 were evaluated based on H. pylori eradication and the development of metachronous lesions. RESULTS: The eradication failure rate was higher in the metachronous group than in the nonmetachronous group (P=0.036). Open-type atrophy (P=0.003) and moderate-to-severe IM (P=0.001) occurred more frequently in the metachronous group. In patients with an initial diagnosis of dysplasia, the eradication failure rate was higher in the metachronous group than in the nonmetachronous group (P=0.002). In addition, open-type atrophy was more frequent in the metachronous group (P=0.047). In patients with an initial diagnosis of carcinoma, moderate-to-severe IM occurred more frequently in the metachronous group (P=0.003); however, the eradication failure rate was not significantly different between the two groups. SHH and SOX2 expression was increased, and CDX2 expression was decreased in the nonmetachronous group after eradication (P<0.05). CONCLUSIONS: Open-type atrophy, moderate-to-severe IM, and H. pylori eradication failure were significantly associated with metachronous lesions. However, eradication failure was significantly associated with dysplasia, but not carcinoma, in the metachronous group. Thus, H. pylori eradication may play an important role in preventing metachronous lesions after ER for precancerous lesions before carcinomatous transformation.
Atrophy
;
Diagnosis
;
Hedgehogs
;
Helicobacter pylori*
;
Helicobacter*
;
Humans
;
Metaplasia
;
Pathology
;
Recurrence*
;
Stomach Neoplasms*
8.A case of acute mesenteric infarction following coronary artery bypass graft.
Yong Wha MOON ; Jie Hyun KIM ; Woong Chol KANG ; Byung Eun PARK ; Young Guk KO ; Dong Hoon CHOI ; Kyung Jong YU
Korean Journal of Medicine 2004;66(3):317-320
Acute mesenteric ischemia leading to massive bowel infarction following cardiac surgery particularly coronary artery bypass graft (CABG), is reported to be a very rare but serious life-threatening complication. In this case, a 55-year-old female underwent CABG and complained of abdominal pain on the first postoperative day, which was thought to be nonspecifically related to the operation wound. In the further hospital course, the patient was found to have extensive acute mesenteric infarction due to thromboembolism of superior mesenteric artery. This is a valuable educational case, since only high index of suspicion does not delay making a diagnosis especially in the patients with risk factors of acute mesenteric ischemia after cardiac surgery requiring cardiopulmonary bypass. On suspicion of acute mesenteric ischemia, an aggressive diagnostic and therapeutic approach should be performed immediately.
Abdominal Pain
;
Cardiopulmonary Bypass
;
Coronary Artery Bypass*
;
Coronary Vessels*
;
Diagnosis
;
Female
;
Humans
;
Infarction*
;
Ischemia
;
Mesenteric Artery, Superior
;
Mesentery
;
Middle Aged
;
Risk Factors
;
Thoracic Surgery
;
Thromboembolism
;
Transplants
;
Wounds and Injuries
9.The Clinical Efficacy of a Pure Alginate Formulation (Lamina G) for Controlling Symptoms in Individuals with Reflux Symptoms: A Randomized Clinical Study
Jie Hyun KIM ; Yong Chan LEE ; Eun Hye KIM ; Jun Chul PARK ; Sung Kwan SHIN ; Sang Kil LEE ; Da Hyun JUNG ; Jae Jun PARK ; Young Hoon YOUN ; Hyojin PARK
Gut and Liver 2019;13(6):642-648
BACKGROUND/AIMS: Bicarbonate-containing alginate formulations are reported to be effective for controlling reflux symptoms. However, the efficacy of Lamina G alginate without gas production has not been reported. The aim is to evaluate the efficacy of a non-bicarbonate alginate in individuals with reflux symptoms without reflux esophagitis. METHODS: Participants who had experienced heartburn or regurgitation for 7 consecutive days were randomized to one of the following treatment groups: proton pump inhibitors (PPI) plus alginate (combination) or PPI plus placebo (PPI only). In addition, as a reference group, patients received placebo plus alginate (alginate only). The primary endpoint compared the percentage of patients with complete resolution of symptoms for the final 7 days of the treatment. Secondary endpoints compared changes in symptom score, symptom-free days during the treatment period, the Reflux Disease Questionnaire, Patient Assessment of Upper Gastrointestinal Disorders (PAGI)-Quality of Life and PAGI-Symptoms Severity Index scores, the investigator's assessment of symptoms, and incidence of adverse events. RESULTS: Complete resolution of heartburn or regurgitation was not significantly different between the combination and PPI only groups (58.7% vs 57.5%, p=0.903). The secondary endpoints were not significantly different between the two groups. Complete resolution of heartburn or regurgitation, did not differ between the alginate only reference group and the PPI only group (75.0% vs 57.5%, p=0.146). CONCLUSIONS: The addition of non-bicarbonate alginate to PPI was no more effective than PPI alone in controlling reflux symptoms.
Alginates
;
Clinical Study
;
Esophagitis, Peptic
;
Gastroesophageal Reflux
;
Heartburn
;
Humans
;
Incidence
;
Proton Pump Inhibitors
;
Treatment Outcome
10.Clinical Outcomes of Endoscopic Submucosal Dissection in Patients under 40 Years Old with Early Gastric Cancer.
Kyu Yeon HAHN ; Sang Kil LEE ; Chan Hyuk PARK ; Hyunsoo CHUNG ; Jun Chul PARK ; Young Hoon YOUN ; Jie Hyun KIM ; Sung Kwan SHIN ; Yong Chan LEE
The Korean Journal of Helicobacter and Upper Gastrointestinal Research 2016;16(3):139-146
BACKGROUND/AIMS: The clinicopathologic features of gastric cancer in young patients are different from those of older patients. However, endoscopic submucosal dissection (ESD) is performed regardless of age. The purpose of this study was to characterize younger patients (≤40 years) who underwent ESD for early gastric cancer (EGC) and analyze the results of ESD. MATERIALS AND METHODS: From January 2006 to June 2014, 55 patients aged 40 years or younger with newly diagnosed EGC underwent ESD at two tertiary hospitals. The clinicopathologic features of EGC and clinical outcomes of ESD in these young patients were reviewed retrospectively. RESULTS: A total 55 patients with 57 EGC lesions underwent ESD. Female sex, superficial flat or depressed lesions, and undifferentiated histology were more common in younger patients than in older patients in our institutional ESD cohort. The en bloc resection rate was 92.7% and the complete resection rate was 94.5%. Although there was a high proportion of undifferentiated cancer in the younger patient group, the curative resection rate was 72.7%. Among 15 patients with non-curative resection, 4 patients underwent additional surgery and 1 patient underwent argon plasma coagulation at the ESD ulcer margin. Eight patients were placed under close surveillance without additional treatment, and no recurrent tumors developed, with a median follow-up period of 37.2±23.6 months. CONCLUSIONS: Younger EGC patients who underwent ESD showed the typical characteristics seen in younger patients with gastric cancer. ESD in younger EGC patients showed comparable outcomes to those in patients with undifferentiated EGC in general.
Argon Plasma Coagulation
;
Cohort Studies
;
Female
;
Follow-Up Studies
;
Humans
;
Retrospective Studies
;
Stomach Neoplasms*
;
Tertiary Care Centers
;
Ulcer