Abstract:
:Many features of the developing nervous system are visible from external observations of intact human embryos. In this study, a photographic atlas from the 4th to the 7th week after ovulation (Carnegie stages 10-18) is provided. The neural folds began to fuse at stage 10, and the rostral and caudal neuropore were closed during stages 11 and 12, respectively. The three primary divisions of the brain were distinguishable before closing of the neural tube. The five secondary brain vesicles were formed during stages 14-15. The development of the cerebellum and cerebrum were first observed at stages 14 and 15, respectively. The mesencephalic flexure was seen at stage 12, and the cervical flexure and pontine flexure at stage 14. After stages 18-19, it became increasingly difficult to identify detailed features of the brain from the surface. Results from this study will help to correlate the characteristic findings of the developing central nervous system of human embryos from stereomicroscopical and light microscopical observations and to locate the exact parts of the developing human brain for other purposes.
journal_name
Yonsei Med Jjournal_title
Yonsei medical journalauthors
Yoon H,Shin YS,Lee KC,Park HWdoi
10.3349/ymj.1997.38.1.26subject
Has Abstractpub_date
1997-02-01 00:00:00pages
26-32issue
1eissn
0513-5796issn
1976-2437journal_volume
38pub_type
杂志文章abstract::We report three cases of solitary rectal ulcer syndrome (SRUS). The diagnosis was established according to histopathologic criteria. But, the initial clinical diagnosis was carcinoma, non-specific ulcer and localized proctitis respectively. SRUS is considered as one of functional disorder in pelvic floor which might g...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.1994.35.2.223
更新日期:1994-06-01 00:00:00
abstract::This study was performed to investigate the effect of peritoneal glucose load on plasma leptin concentrations in the continuous ambulatory peritoneal dialysis (CAPD) performed on 13 non-diabetic ESRD patients. Plasma leptin and insulin concentrations were measured for 2 hours during a single 2 liter exchange of 1.5% g...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.2000.41.4.485
更新日期:2000-08-01 00:00:00
abstract:PURPOSE:The purpose of this study is to evaluate the clinical results of treatment with a high dose of 3-dimensional conformal boost (3DCB) using a real-time tracking radiation therapy (RTRT) system in cervical cancer patients. MATERIALS AND METHODS:Between January 2001 and December 2004, 10 patients with cervical can...
journal_title:Yonsei medical journal
pub_type: 临床试验,杂志文章
doi:10.3349/ymj.2010.51.1.93
更新日期:2010-01-01 00:00:00
abstract::A 62-year-old male patient with prostate cancer and bilateral renal cell carcinoma underwent a simultaneous robot-assisted bilateral partial nephrectomy and radical prostatectomy. We describe our initial experience of combined operation with a port strategy allowing reuse of ports and surgical considerations because o...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.2012.53.1.236
更新日期:2012-01-01 00:00:00
abstract::To evaluate the longterm effects of a IUD on the human endometrium and find the possible contraceptive mechanism of the IUD, histologic, histochemical, and ultrastructural studies of human endometrial biopsies from 44 normal contorls and 178 IUD wearers were made. Histologic findings included interstitial hemorrhage,...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.1983.24.2.141
更新日期:1983-01-01 00:00:00
abstract:PURPOSE:The purposes of this study were to evaluate the usefulness and limitations of chest radiographs in scoliosis screening and to compare these results with those of thoraco-lumbar standing radiographs (TLSR). MATERIALS AND METHODS:During Korean conscription, 419 males were retrospectively examined using both ches...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.2012.53.6.1183
更新日期:2012-11-01 00:00:00
abstract:PURPOSE:We evaluated the validity of robotic surgery (RS) for pediatric choledochal cyst (CC) in comparison to open surgery (OS). MATERIALS AND METHODS:From January 2009 to April 2013, clinical data from 79 consecutive pediatric patients with CC, who underwent RS (n=36) or OS (n=43) performed by a single pediatric sur...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.2015.56.3.737
更新日期:2015-05-01 00:00:00
abstract:PURPOSE:Pathogenesis and treatment of spontaneous dissecting aneurysm of the intracranial vertebral artery (VA) remain controversial. This study was designed to provide management strategies and to improve management outcome in patients with these aneurysms. MATERIALS AND METHODS:Among a total of 1,990 patients treate...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.2007.48.3.425
更新日期:2007-06-30 00:00:00
abstract:PURPOSE:Augmentation rhinoplasty using alloplastic materials is a relatively common procedure among Asians. Silicon, expanded polytetrafluoroethylene (Gore-tex®), and porous high density polyethylene (Medpor®) are most frequently used materials. This study was conducted to analyze revisional rhinoplasty cases with allo...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.2014.55.6.1617
更新日期:2014-11-01 00:00:00
abstract:PURPOSE:The proposed the thoracolumbar injury classification system (TLICS) for thoracolumbar injury cites the integrity of the posterior ligamentous complex (PLC). However, no report has elucidated the severity of damage in thoracic and lumbar injury with classification schemes by presence of the PLC injury. The purpo...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.2013.54.4.1020
更新日期:2013-07-01 00:00:00
abstract:PURPOSE:The aim of this study was to investigate noninfectious complications of peritoneal dialysis (PD), including mechanical and metabolic complications, at a single center in Korea. MATERIALS AND METHODS:We analyzed data from 60 PD patients aged ≤18 years (40 boys and 20 girls) during the period between 1986 and 20...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.2015.56.5.1359
更新日期:2015-09-01 00:00:00
abstract::Long QT syndrome is associated with lethal tachyarrhythmia that can lead to syncope, seizure, and sudden death. Congenital long QT syndrome is a genetic disorder, characterized by delayed cardiac repolarization and prolongation of the QT interval on the electrocardiogram (ECG). Type 2 congenital long QT is linked to m...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.2011.52.6.1025
更新日期:2011-11-01 00:00:00
abstract::Antimicrobial resistance surveillance is necessary to determine the size of the problem and to guide empirical selection of antimicrobial agents for treating infected patients. The aim of this study was to analyze the results of susceptibility tests performed by hospitals participating in the Korean Nationwide Surveil...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.2003.44.4.571
更新日期:2003-08-30 00:00:00
abstract::Calcineurin Inhibitors (CNIs) and Corticosteroids have been the main immunosuppressive agents in solid organ transplantation. Many studies have confirmed the positive impacts of withdrawal/avoidance of these agents, separately, on their side effect profiles. A pilot study was performed avoiding both agents among low-i...
journal_title:Yonsei medical journal
pub_type: 临床试验,杂志文章
doi:10.3349/ymj.2004.45.6.1143
更新日期:2004-12-31 00:00:00
abstract::Hepatocytes are the primary targets of the hepatitis C virus (HCV). While immunosuppressive roles of HCV core protein have been found in several studies, it remains uncertain whether core protein expressed in hepatocytes rather than in immune cells affects the CD8+ T cell response. In order to transduce genes selectiv...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.2005.46.6.827
更新日期:2005-12-31 00:00:00
abstract:PURPOSE:The precise molecular mechanisms culminating in coronary artery disease (CAD) are not well understood, despite a wealth of knowledge on predisposing risk factors and pathomechanisms. CAD and myocardial infarction (MI) are complex genetic diseases; neither the environment alone, nor a single gene, cause disease,...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.2008.49.2.237
更新日期:2008-04-30 00:00:00
abstract:PURPOSE:Although current guidelines recommend continuing the same antithrombotic strategy regardless of rhythm control after radiofrequency catheter ablation (RFCA) of atrial fibrillation (AF), anticoagulation has a risk of major bleeding. We evaluated the safety of switching warfarin to aspirin in patients with succes...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.2014.55.5.1238
更新日期:2014-09-01 00:00:00
abstract:PURPOSE:This study aimed to investigate the effects of PIK3CA on the sensitivity of acute B lymphocytic leukemia cells (Nalm-6 cells) to chemotherapy drugs. MATERIALS AND METHODS:Children's normal B lymphocytes and Nalm-6 cells were cultured. Nalm-6 cells were transfected with PIK3CA siRNA (siPIK3CA group) or its nega...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.2019.60.2.182
更新日期:2019-02-01 00:00:00
abstract::Although pectoralis major plays an important role as a prime or assistant mover for the varied range of shoulder movement, there was no significant functional loss in ordinary activities in case of congenital absence of this muscle, because of compensation of surrounding muscles. This report describes a 22-year-old so...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.1991.32.1.87
更新日期:1991-03-01 00:00:00
abstract::An effective rehabilitation program was developed for psychiatric patients' self-management of medication and symptoms. The rehabilitation program was designed to allow the patients to understand their illness, cope with their medical regimen, and prevent a relapse by recognizing any of the symptoms when they recur. T...
journal_title:Yonsei medical journal
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.3349/ymj.2002.43.5.579
更新日期:2002-10-01 00:00:00
abstract:PURPOSE:Exclusive enteral nutrition (EEN) therapy effectively induces clinical remission in Crohn's disease (CD). It remains unclear, however, whether partial enteral nutrition (PEN) can maintain remission. This study was performed to determine the abilities of oral EEN and oral PEN to induce and maintain clinical remi...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.2016.57.5.1185
更新日期:2016-09-01 00:00:00
abstract::Percutaneous transluminal coronary angioplasty with metal stent placement has become a well-developed treatment modality for coronary stenotic lesions. Although infection involving implanted stents is rare, it can, however, occur with high morbidity and mortality. We describe herein a case of an inserted coronary sten...
journal_title:Yonsei medical journal
pub_type:
doi:10.3349/ymj.2017.58.2.458
更新日期:2017-03-01 00:00:00
abstract::House dust mites are the most common cause of allergic sensitization in respiratory allergic patients in the world. Tyrophagus putrescentiae (TP), which was followed by Dermatophagoides farinae (DF) and Dermatophagoides pteronyssinus (DP), has been reported as the third most common house mite in Korea. We previously r...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.1998.39.2.109
更新日期:1998-04-01 00:00:00
abstract::Coronary-subclavian steal through the left internal mammary graft is a rare cause of myocardial ischemia in patients who have had a coronary bypass surgery. We report a 70-year-old man who presented with sustained monomorphic ventricular tachycardia 5 years after the surgical creation of a left internal mammary to the...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.2009.50.6.852
更新日期:2009-12-31 00:00:00
abstract:PURPOSE:To evaluate reliability of Fourier-domain optical coherence tomography (OCT) (RTVue), time-domain OCT (Visante), and slit-lamp adapted ultrasonic pachymetry (SL-US) in the measurement of central corneal thickness (CCT). MATERIALS AND METHODS:Thirty healthy volunteers visited our clinic 3 times and fifty eyes w...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.2012.53.3.634
更新日期:2012-05-01 00:00:00
abstract::House dust mites have been known as the most important allergen in respiratory allergic diseases. Among several mite allergens, group I and group II antigens were recognized as major allergens. We measured specific IgE and IgG subclass antibodies against whole body antigen (WBA) and two major allergens of Dermatophago...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.1994.35.4.453
更新日期:1994-12-01 00:00:00
abstract::Helicobacter pylori (H. pylori) undergoes decades long colonization of the gastric mucosa of half the population in the world to produce acute and chronic gastritis at the beginning of infection, progressing to more severe disorders, including peptic ulcer disease and gastric cancer. Prolonged carriage of H. pylori is...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.2014.55.6.1453
更新日期:2014-11-01 00:00:00
abstract::The aim of this study was to determine the usefulness of early magnetic resonance imaging findings in predicting neurologic recovery at or below the injured level in traumatic cervical spinal cord injuries. Thirty patients with traumatic cervical spinal cord injuries were included. All of the patients received a magne...
journal_title:Yonsei medical journal
pub_type: 临床试验,杂志文章
doi:10.3349/ymj.2005.46.3.379
更新日期:2005-06-30 00:00:00
abstract::Diffusion tensor imaging (DTI) allows to isolate the corticospinal tract (CST) area from adjacent structures. Using DTI, we investigated the characteristics of the CST areas according to the pontine level in the normal human brain. We recruited 33 healthy subjects and DTIs were acquired using a sensitivity-encoding he...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.2013.54.3.785
更新日期:2013-05-01 00:00:00
abstract::Effects of a platelet-released, naturally occurring nucleotide, adenosine 5'-tetraphosphate (ATPP) on vascular tone were analyzed in the isolated rat aorta. Under resting tension ATPP (1 approximately 100 microM) elicited concentration-dependent contractions in endothelium-intact aortic rings in contrast to the concen...
journal_title:Yonsei medical journal
pub_type: 杂志文章
doi:10.3349/ymj.1995.36.6.487
更新日期:1995-12-01 00:00:00