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Background/Aims@#We aimed to evaluate the histologic features predictive of prognosis and correlate them with endoscopic findings in patients with ulcerative colitis (UC) having complete or partial mucosal healing (MH). @*Methods@#We prospectively collected and reviewed data from patients with UC who underwent colonoscopy or sigmoidoscopy with biopsy. Complete and partial MH were defined as Mayo endoscopic subscores (MESs) of 0 and 1, respectively. Histologic variables, including the Nancy index (NI), predicting disease progression (defined as the need for medication upgrade or hospitalization/surgery), were evaluated and correlated with endoscopic findings. @*Results@#Overall, 441 biopsy specimens were collected from 194 patients. The average follow-up duration was 14.7 ± 7.4 months. There were 49 (25.3%) and 68 (35.1%) patients with MESs of 0 and 1, respectively. Disease progression occurred only in patients with an MES of 1. NI ≥ 3 was significantly correlated with disease progression during follow-up. Mucosal friability on endoscopy was significantly correlated with NI ≥ 3 (61.1% in NI < 3 vs. 88.0% in NI ≥ 3; p = 0.013). @*Conclusions@#Histological activity can help predict the prognosis of patients with UC with mild endoscopic activity. Mucosal friability observed on endoscopy may reflect a more severe histological status, which can be a risk factor for disease progression.
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Purpose@#This study examined the effects of the abdominal hollowing technique applied during plank exercises at different shoulder angles between the ground and the humerus on the abdominal muscle activity @*Methods@#The subjects were 36 male volunteers. They were randomized to perform plank exercises or plank exercises using the hollowing technique at 80°, 90°, 100°, and 110° between the ground and the humerus. The abdominis muscles were measured using a surface electromyogram. Independent t-tests examined the changes in the activity of these muscles according to the two exercise methods at each angle. The changes in muscle activity were examined according to the selected angles by one-way analysis of variance. @*Results@#The activity of abdominal muscles was investigated according to the angle between the ground and the humerus during the plank exercise. As a result, the muscle activity increased significantly with decreasing angle in the rectus abdominis, external oblique, and internal oblique·transverse abdominis muscles (p<0.05). In terms of the changes in abdominal muscle activity after hollowing plank exercises at the given angles between the ground and the humerus, an increase in angle resulted in a statistically significant increase in the rectus abdominis muscle activity (p<0.05). The activities of the rectus abdominis, external oblique, and internal oblique/transverse abdominis muscles after hollowing plank exercises showed statistically significant increases (p<0.05) compared to those after plank exercises. @*Conclusion@#The hollowing technique and the increase in the angle between the ground and the humerus may be an effective exercise method for increasing the muscle activity of the abdominis muscles.
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Purpose@#This study examined the effects of the abdominal hollowing technique applied during plank exercises at different shoulder angles between the ground and the humerus on the abdominal muscle activity @*Methods@#The subjects were 36 male volunteers. They were randomized to perform plank exercises or plank exercises using the hollowing technique at 80°, 90°, 100°, and 110° between the ground and the humerus. The abdominis muscles were measured using a surface electromyogram. Independent t-tests examined the changes in the activity of these muscles according to the two exercise methods at each angle. The changes in muscle activity were examined according to the selected angles by one-way analysis of variance. @*Results@#The activity of abdominal muscles was investigated according to the angle between the ground and the humerus during the plank exercise. As a result, the muscle activity increased significantly with decreasing angle in the rectus abdominis, external oblique, and internal oblique·transverse abdominis muscles (p<0.05). In terms of the changes in abdominal muscle activity after hollowing plank exercises at the given angles between the ground and the humerus, an increase in angle resulted in a statistically significant increase in the rectus abdominis muscle activity (p<0.05). The activities of the rectus abdominis, external oblique, and internal oblique/transverse abdominis muscles after hollowing plank exercises showed statistically significant increases (p<0.05) compared to those after plank exercises. @*Conclusion@#The hollowing technique and the increase in the angle between the ground and the humerus may be an effective exercise method for increasing the muscle activity of the abdominis muscles.
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Background/Aims@#We aim to evaluate the efficacy and safety of phloroglucinol in patients with diarrhea-predominant irritable bowel syndrome (IBS-D). @*Methods@#Seventy-two patients with IBS-D who met Rome III criteria were 1:1 randomized in a parallel, double-blind design to receive phloroglucinol or placebo for 2 weeks. Patients were followed for 1 week after the end of treatment. The primary outcome was the proportion of responders, defined as those who answered “moderate or more of improvement” to the subject global assessment for at least 1 week of the 2-week treatment period. Secondary outcomes included the proportion of these patients during the 3-week period including 1 week of follow-up, IBS symptoms (abdominal pain/discomfort, diarrhea, urgency, mucus in stool, bloating, and passage of gas), stool frequency and consistency, and IBS quality of life (IBS-QOL). @*Results@#The proportion of responders during 2-week treatment period tended to be higher in the phloroglucinol group than in the placebo group, although the difference did not reach statistical significance (55.6% vs 30.6%, P = 0.056). The proportion of responders during the 3-week period was significantly higher in the phloroglucinol group than in the placebo group (61.6% vs 30.6%, P = 0.013). Individual symptom scores, IBS-QOL, stool frequency and consistency tended to improve in the phloroglucinol group, but there were no statistical significances compared to those of the placebo group. No serious adverse events were reported in both groups. @*Conclusions@#Phloroglucinol could be a safe and beneficial option for the management of overall IBS symptoms in patients with IBS-D. Further large scaled studies are warranted.
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Background/Aims@#To compare the efficacy and safety of procedural sequence in same-day bidirectional endoscopy. @*Methods@#We searched OVID-MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, and Google Scholar to identify randomized controlled trials that compared the procedural sequences in same-day bidirectional endoscopy, including esophagogastroduodenoscopy (EGD) and colonoscopy. The sedative and analgesic doses required, discomfort and satisfaction scores, procedure time, recovery time, adenoma detection rate, and failed cecal intubation were evaluated. Adverse effects, including respiratory and cardiovascular complications, were also assessed. @*Results@#We included six studies, with 1,848 patients in total. The requirement for sedative treatment was significantly lesser in the EGD-colonoscopy sequence than in the colonoscopy-EGD sequence (standardized mean difference [SMD], –0.39; 95% confidence interval [CI], –0.54 to –0.24; p = 0.12; I2 = 49%). Discomfort, scored by patients during the EGD procedure, was significantly lesser in the EGD-colonoscopy sequence than in the colonoscopy-EGD sequence (SMD, –0.45; 95% CI, –0.80 to –0.09; p = 0.02; I2 = 73%), while it was comparable during colonoscopy between the two sequences. Recovery time was significantly shorter in the EGD-colonoscopy sequence than in the colonoscopy-EGD sequence (SMD, –0.47; 95% CI, –0.65 to –0.30; p = 0.28; I2 = 21%). Total procedure duration, EGD, colonoscopy, cecal intubation time and incidence, incidences of pathologic findings, and adenoma detection were comparable between the two sequences. There was no significant difference in the incidences of desaturation, hypotension, hypertension, bradycardia, and tachycardia between the two sequences. @*Conclusions@#When conducting same-day bidirectional endoscopy, EGD followed by colonoscopy is the most beneficial sequence to be used because patients require lower sedative doses, recover faster, and report lesser discomfort.
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PURPOSE: This study was conducted to identify the impacts of stroke patients' general and disease-related properties on depression and family support. METHODS: Subjects consisted of 79 persons who were diagnosed with cerebral hemorrhage and cerebral infarction and met the criteria for selection. The Korean version of Beck depression inventory (BDI) and a revision of the family support developed by Cobb were used. Frequency analysis of the subjects' general and medical history properties was conducted, and one way ANOVA was utilized to evaluate the degree of depression and family support with respect to the properties. Pearson's correlation coefficient was conducted to investigate the degree of depression and family support. RESULTS: Participants showed no significant difference in depression based on the subjects' general and disease-related properties (p>0.05), although there were significant differences in family support based on marital status, hobbies and the medical expenses payers (p<0.05). The correlation between family support and depression was r=-0.491 (p<0.01). CONCLUSION: Through the results of this study, it was found that general and disease-related properties would not have any impact on depression while they would affect family support.
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Humanos , Hemorragia Cerebral , Infarto Cerebral , Depressão , Passatempos , Estado Civil , Acidente Vascular CerebralRESUMO
Sodium picosulfate/magnesium citrate (SPMC) is a widely used oral bowel cleansing agent considered to be relatively safe. However, partially dissolved or undissolved SPMC powder may cause severe injuries of the esophagus and stomach. We report a very rare case of acute gastric injury without esophageal damage caused by the ingestion of undissolved SPMC powder. A 69-year-old man experienced epigastric pain after swallowing SPMC powder without dissolving it in water in preparation for a screening colonoscopy. He realized his mistake immediately and subsequently drank 2 L of water. The esophagogastroduodenoscopy conducted after 12 hours indicated an acute gastric ulceration without injury of the esophagus or duodenum. The endoscopy conducted after 6 weeks of oral proton pump inhibitor treatment showed healing of the gastric injury. This suggested that drinking large amounts of water after ingesting partially dissolved or undissolved SPMC powder can prevent serious esophageal injury, but offers no preventive benefit for acute gastric injury.
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Idoso , Humanos , Catárticos , Ácido Cítrico , Colonoscopia , Deglutição , Detergentes , Ingestão de Líquidos , Duodeno , Ingestão de Alimentos , Endoscopia , Endoscopia do Sistema Digestório , Esôfago , Programas de Rastreamento , Bombas de Próton , Sódio , Estômago , Úlcera Gástrica , ÁguaRESUMO
PURPOSE: The purpose of this study was to evaluate the effect of abdominal massage on alleviating pain caused by the injection of recombinant gonadotropin for In Vitro Fertilization (IVF) among infertile women. METHODS: This study employed a nonequivalent control group non-synchronized design. A total sample of 149 infertile women who never experienced in vitro fertilization was recruited at C fertility center. Seventy women were assigned into experimental group and 79 into controls. The experimental group had been informed to do abdominal massage prior to the injection and to record their subjective pain using visual analogue scale. The control group had been informed to record their subjective pain in the same way just after the injection. RESULTS: Compared to the pre-tested pain scores, the pain scores in experimental group were significantly reduced by 0.7 points, whereas the control group increased by 0.9 points (t=-4.55, p=.001). CONCLUSION: This study confirms that the use of abdominal massage prior to the injection is an effective way to alleviate pain on injection site. This massage may be a useful intervention for infertile women about pain alleviation.
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Feminino , Humanos , Fertilidade , Fertilização in vitro , Gonadotropinas , Técnicas In Vitro , MassagemRESUMO
BACKGROUND/AIMS: Anti-tumor necrosis factor (TNF) therapy for active ulcerative colitis (UC) and Crohn's disease (CD) is associated with increased risks of tuberculosis (TB) infection. We analyzed the incidence and clinical features of Korean patients with inflammatory bowel disease (IBD) who developed active TB during anti-TNF therapy. METHODS: Ten cases of active TB developed in patients treated with infliximab (n=592) or adalimumab (n=229) for UC (n=160) or CD (n=661) were reviewed. We analyzed demographics, interval between start of anti-TNF therapy and active TB development, tests for latent TB infection (LTBI), concomitant medications, and the details of diagnosis and treatments for TB. RESULTS: The incidence of active TB was 1.2% (10/821): 1.5% (9/592) and 0.4% (1/229) in patients receiving infliximab and adalimumab, respectively. The median time to the development of active TB after initiation of anti-TNF therapy was three months (range: 2-36). Three patients had past histories of treatment for TB. Positive findings in a TB skin test (TST) and/or interferon gamma releasing assay (IGRA) were observed in three patients, and two of them received anti-TB prophylaxis. Two patients were negative by both TST and IGRA. The most common site of active TB was the lungs, and the active TB was cured in all patients. CONCLUSIONS: Active TB can develop during anti-TNF therapy in IBD patients without LTBI, and even in those with histories of TB treatment or LTBI prophylaxis. Physicians should be aware of the potential for TB development during anti-TNF therapy, especially in countries with a high prevalence of TB.
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Humanos , Adalimumab , Colite Ulcerativa , Doença de Crohn , Demografia , Diagnóstico , Incidência , Infliximab , Doenças Inflamatórias Intestinais , Interferons , Pulmão , Necrose , Prevalência , Testes Cutâneos , TuberculoseRESUMO
Refeeding syndrome refers to a life-threatening shift of electrolytes and fluid with metabolic abnormalities in malnourished patients undergoing refeeding, whether orally, enterally, or parenterally. Clinical findings are fluid-balance abnormalities, abnormal glucose metabolism, hypophosphatemia, hypomagnesemia, hypokalemia and deficiencies of vitamin and trace element. Multiple organ systems including cardiac, respiratory, neurologic, renal, hematologic, and gastrointestinal can be affected. When recognized in a timely manner, these complications can be easily and successfully prevented and treated. Four factors appear fundamental: early identification of patients at risk, correction of abnormalities before refeeding, close monitoring during refeeding, and an appropriate feeding regimen.
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Humanos , Eletrólitos , Glucose , Hipopotassemia , Hipofosfatemia , Metabolismo , Apoio Nutricional , Síndrome da Realimentação , VitaminasRESUMO
Colorectal fecaloma is hardening of feces into lumps of varying size that is much harder in consistency than a fecal impaction. Complications of colorectal fecaloma include ulceration, bleeding, perforation and obstruction of the colon. Most fecalomas are successfully removed by conservative treatment with laxatives, enemas and rectal evacuation to relieve fecal impaction. When conservative treatments have failed, a surgical intervention may be needed. Herein, we report a case of 4.7 cm sized sigmoid fecaloma showing no response to conservative treatments that was successfully removed by endoscopic fragmentation with Coca-Cola injection instead of surgery.
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Adulto , Feminino , Humanos , Cola/química , Colo Sigmoide , Colonoscopia , Impacção Fecal/tratamento farmacológico , Laxantes/uso terapêutico , Radiografia Abdominal , Tomografia Computadorizada por Raios XRESUMO
Large hyperplastic polyps of the duodenum are very rare. We report the case of a 61-year-old women with a large lobulated and pedunculated hyperplastic polyp in the distal second portion of the duodenum causing anemia which was treated with snare polypectomy. Endoscopy revealed a 2.5 cm sized lobulated and pedunculated polyp with a long stalk in the distal second portion of duodenum. Previous studies reported that duodenal polyps larger than 10 mm in diameter or polyps in the second portion as independent risk factors of neoplastic lesions, and thus an accurate pathologic examination was needed. Many patients with large duodenal hyperplastic polyps present with gastrointestinal bleeding and anemia. We removed the duodenal polyp by a snare with electrocautery after clipping and epinephrine injection into the stalk to prevent bleeding. Histopathological examination of the polyp revealed hyperplasia.
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Feminino , Humanos , Pessoa de Meia-Idade , Anemia , Duodeno , Eletrocoagulação , Endoscopia , Epinefrina , Hemorragia , Hiperplasia , Pólipos , Fatores de Risco , Proteínas SNARERESUMO
BACKGROUND/AIMS: The clinical outcome of patients with a partial virological response (PVR) to entecavir (ETV), in particular nucloes(t)ide analogue (NA)-experienced patients, has not been thoroughly investigated. The aim of the present study was to assess long-term outcomes in NA-naive and NA-experienced chronic hepatitis B patients with a PVR to ETV. METHODS: Chronic hepatitis B patients treated with ETV (0.5 mg/day) for at least 1 year were enrolled retrospectively. PVR was defined as a decrease in hepatitis B virus (HBV) DNA titer of more than 2 log10 IU/mL, yet with residual serum HBV DNA, as determined by real time-polymerase chain reaction, at week 48 of ETV therapy. RESULTS: A total of 202 patients (127 NA-naive and 75 NA-experienced, male 70.8%, antigen positive 53.2%, baseline serum HBV DNA 6.2 +/- 1.5 log10 IU/mL) were analyzed. Twenty-eight patients demonstrated a PVR. The PVR was associated with a high serum HBV DNA titer at baseline and at week 24. Virological response (< 60 IU/mL) was achieved in 46.2%, 61.5%, 77.6%, and 85% of patients with PVR at week 72, 96, 144, and 192, respectively. Resistance to antivirals developed in two NA-experienced patients. Failure of virological response (VR) in patients with PVR was associated with high levels of serum HBV DNA at week 48. CONCLUSIONS: Patients with PVR to ETV had favorable long-term virological outcomes. The low serum level of HBV DNA (< 200 IU/mL) at week 48 was associated with subsequent development of a VR in patients with PVR to ETV.
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Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Antivirais/efeitos adversos , Biomarcadores/sangue , DNA Viral/sangue , Farmacorresistência Viral , Guanina/efeitos adversos , Vírus da Hepatite B/efeitos dos fármacos , Hepatite B Crônica/diagnóstico , Estudos Retrospectivos , Fatores de Tempo , Resultado do Tratamento , Carga ViralRESUMO
Colorectal cancer is the third most common cancer in Korea; it is the second most common cancer in men and the third most common in women. The incidence rate in Korea has continuously increased since 1999 when the National Cancer Registry statistics began. Currently; there are several screening modalities; that have been recommended by expert societies, including fecal occult blood test, colonoscopy, computed tomographic colonography The annual fecal immunochemical test (FIT) has been used in adults aged 50 and older as part of the National Cancer Screening Program in Korea since 2004. Although several study results from regional or national colorectal cancer screening programs in other countries have been reported, the National Cancer Screening Program in Korea has not yet been evaluated with evidence-based methods. Herein report the consensus statements on the National Screening Guideline for colorectal cancer developed by a multi-society expert committee in Korea, as follows: 1) We recommend annual or biennial FIT for screening for colorectal cancer in asymptomatic adults, beginning at 45 years of age and continuing until 80 years (recommendation B). 2) There is no evidence for the risks or benefits of FIT in adults older than 80 years (recommendation I). 3) Selective use of colonoscopy for colorectal cancer screening is recommended, taking into consideration individual preference and the risk of colorectal cancer (recommendation C). 4) There is no evidence for the risks or benefits of double-contrast barium enema for colorectal cancer screening in asymptomatic adults (recommendation I). 5) There is no evidence for the risks or benefits of computed tomographic colonography for colorectal cancer screening in asymptomatic adults (recommendation I).
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Adulto , Feminino , Humanos , Masculino , Bário , Colonografia Tomográfica Computadorizada , Colonoscopia , Neoplasias Colorretais , Consenso , Detecção Precoce de Câncer , Enema , Incidência , Coreia (Geográfico) , Programas de Rastreamento , Sangue OcultoRESUMO
BACKGROUND/AIMS: Increased incidence of coronary artery disease has led to the increased use of dual antiplatelet therapy composed of aspirin and clopidogrel. We investigated the incidence of gastrointestinal complications in patients who received single or dual antiplatelet therapy and analyzed their clinical characteristics in order to predict the prognostic factors. METHODS: Between January 2009 and December 2011, we retrospectively reviewed the medical records of patients who underwent coronary angiography at Chung-Ang University Hospital (Seoul, Korea). One hundred and ninety-four patients were classified into two groups: aspirin alone group and dual antiplatelet group. Clinical characteristics, past medical history, and presence of peptic ulcer were analyzed. RESULTS: During the follow-up period, 11 patients had duodenal ulcer; the event rate was 2.02% in the aspirin alone group and 9.47% in the dual antiplatelet group (hazard ratio [HR] 5.24, 95% CI 1.03-26.55, p<0.05). There was no significant difference in the rate of significant upper gastrointestinal bleeding: 0% vs. 4.2% (p=0.78). In patients who received proton pump inhibitor (PPI), 24 patients had gastric ulcer; the event rate was significantly different between the two groups: 4.87% vs. 22.98% (HR 3.40, 95% CI 1.02-11.27, p<0.05). CONCLUSIONS: Dual antiplatelet groups had a higher incidence of duodenal ulcers without significant bleeding compared with the aspirin alone group. In patients who received PPI, the dual antiplatelet therapy group had a higher incidence of gastric ulcers without significant bleeding compared with the aspirin alone group. Therefore, physicians must pay attention to high risk groups who receive dual antiplatelet therapy and aggressive diagnostic endoscopy should also be considered.
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Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Anti-Inflamatórios não Esteroides/uso terapêutico , Aspirina/uso terapêutico , Angiografia Coronária , Doença da Artéria Coronariana/prevenção & controle , Quimioterapia Combinada , Hemorragia Gastrointestinal/induzido quimicamente , Incidência , Úlcera Péptica/diagnóstico , Inibidores da Agregação Plaquetária/uso terapêutico , Modelos de Riscos Proporcionais , Inibidores da Bomba de Prótons/uso terapêutico , Estudos Retrospectivos , Fatores de Risco , Ticlopidina/análogos & derivadosRESUMO
PURPOSE: This study investigated the possible relationship between viral infection and first trimester pregnancy loss. MATERIALS AND METHODS: A prospective study was performed on 51 gravidas with missed abortion, fetal anomaly, pre-term delivery, and full-tem delivery at Hanyang University Hospital. Enteroviruses were detected by semi-nested reverse transcription-polymerase chain reaction (RT-PCR) and immunohistochemistry in abortive tissues and placentas. Enterovirus serotypes were confirmed by genome sequencing. Herpesviruses were detected by PCR. RESULTS: Coxsackievirus B3 (CVB3) was detected in 8 of 14 missed abortion cases, 1 of 27 full-term cases, and none of the 9 pre-term cases. Coxsackievirus B1 (CVB1) was detected in an encephalocele case. Herpes simplex virus type 1 was found in 4 full-term cases, 3 pre-term cases, and none of the missed abortion cases. CONCLUSION: The prevalence of CVB3 was significantly higher in missed abortion cases compared to full-term or pre-term delivery cases. CVB infection may therefore be an important etiological agent of missed abortion.
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Adulto , Feminino , Humanos , Gravidez , Aborto Retido/etiologia , Infecções por Coxsackievirus/complicações , Enterovirus Humano B/genética , Imuno-Histoquímica , Placenta/virologia , Complicações Infecciosas na Gravidez/virologia , Primeiro Trimestre da Gravidez , Prevalência , Estudos Prospectivos , República da Coreia , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Análise de Sequência de DNA , Útero/virologiaRESUMO
Bee stings can cause severe adverse reactions, leading to anaphylaxis, cardiovascular collapse, and death. In some cases, bee venom also induces disseminated intravascular coagulation (DIC). However, to our knowledge, there has been no fatal case of intravascular coagulation accompanied by anaphylaxis caused by bee sting acupuncture. Here, we report a fatal case of a 65-year-old woman with DIC, following anaphylactic shock after bee sting acupuncture. This case emphasizes that practitioners should consider anaphylaxis followed by coagulation abnormalities when a patient's vital signs are unstable after bee sting acupuncture.
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Idoso , Feminino , Humanos , Acupuntura , Anafilaxia , Venenos de Abelha , Abelhas , Mordeduras e Picadas , Dacarbazina , Coagulação Intravascular Disseminada , Peçonhas , Sinais VitaisRESUMO
The association of hematological malignancies with a mediastinal germ cell tumor (GCT) is very rare. We report one case of a young adult male with primary mediastinal GCT who subsequently developed acute megakaryoblastic leukemia involving isochromosome (12p). A 25-yr-old man had been diagnosed with a mediastinal GCT and underwent surgical resection and adjuvant chemotherapy. At 1 week after the last cycle of chemotherapy, his peripheral blood showed leukocytosis with blasts. A bone marrow study confirmed the acute megakaryoblastic leukemia. A cytogenetic study revealed a complex karyotype with i(12p). Although additional chemotherapy was administered, the patient could not attain remission and died of septic shock. This case was definitely distinct from therapy-related secondary leukemia in terms of clinical, morphologic, and cytogenetic features. To our knowledge, this is the first case report of a patient with mediastinal GCT subsequently developing acute megakaryoblastic leukemia involving i(12p) in Korea.
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Adulto , Humanos , Masculino , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Bleomicina/administração & dosagem , Medula Óssea/patologia , Cromossomos Humanos Par 12 , Cisplatino/administração & dosagem , Etoposídeo/administração & dosagem , Isocromossomos , Cariotipagem , Leucemia Megacarioblástica Aguda/tratamento farmacológico , Neoplasias do Mediastino/diagnóstico , Neoplasias Embrionárias de Células Germinativas/diagnóstico , Segunda Neoplasia Primária/tratamento farmacológico , República da Coreia , Choque Séptico/patologiaRESUMO
Prevalence of erosive esophagitis (EE) has been increasing in Korea. The purpose of this study was to estimate prevalence of EE among low socioeconomic population in Korea and to investigate risk factors for EE. We reviewed the medical records of 7,278 subjects who were examined by upper endoscopy in the Korean National Cancer Screening Program at Chung-Ang University Yong-san Hospital from March 2003 to March 2008. The study population included subjects > or = 40 yr of age who were Medicaid recipients and beneficiaries in the National Health Insurance Corporation. Multivariate analysis was used to determine risk factors for EE. Prevalence of EE was 6.7% (486/7,278). According to the LA classification system, LA-A in 344 subjects, LA-B in 135 subjects, and LA-C and D in 7 subjects. In multivariate analysis, age > or = 60 yr, male sex, BMI > or = 25, current smoking, alcohol consumption, fasting glucose level > or = 126 mg/dL, and endoscopic hiatal hernia were significant risk factors for EE. The prevalence of EE in low socioeconomic Korean population is similar to that in personal annual medical check-ups. Risk factors for EE among them include old age, male sex, BMI > or = 25, current smoking, alcohol consumption, fasting glucose level > or = 126 mg/dL, and hiatal hernia.