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기획B형간염 바이러스의 잠재 감염 ; B형간염 바이러스 잠재 감염의 전염과 재활성화
송상희 ( Sang Hee Song ),황성규 ( Seong Gyu Hwang ) 대한소화기학회 2013 대한소화기학회지 Vol.62 No.3
Occult HBV infection (OBI) is defined as presence of HBV DNA in the liver tissue in patients with serologically undetectable HBsAg. There are differences in virologic and serological profiles of OBI. Majority of OBI are positive for anti-HBs and/or anti-HBc and minor portion are negative for all HBV markers. However, there are no HBV mutations in the surface and its regulatory regions. HBV infection persists by the presence of covalently closed circular DNA (cccDNA) within the infected hepatocytes, which serves as a reservoir for future infection. OBI increases the risk of HBV transmission through transfusion, hemodialysis, and organ transplantation. Therefore effective measures should be employed to screen OBI. Antiviral therapy is needed in HBsAg-negative transplant patients who are anti-HBc positive to prevent the recurrence of HBV infection. Since HBV replication is strongly suppressed by immune surveillance system in OBI patients, immunosuppression results in massive HBV replication. This leads to acute hepatitis and sometimes mortality when immune surveillance is recovered after stopping immunosuppressive drugs/anticancer chemotherapy. Therefore, narrow surveillance is required to recognize the viral reactivation and start antiviral agents during immunosuppressive therapy/anticancer chemotherapy in patients with OBI. (Korean J Gastroenterol 2013;62:148-153)
진선미 ( Sun Mi Jin ),송상희 ( Sang Hee Song ),조양현 ( Yang Hyun Cho ),신대규 ( Dae Kyu Shin ),신선영 ( Sun Young Shin ),김광일 ( Gwang Il Kim ),박하나 ( Hana Park ),임규성 ( Kyu Sung Rim ) 대한소화기학회 2015 대한소화기학회지 Vol.65 No.1
Nodular regenerative hyperplasia (NRH) is an uncommon liver condition characterized by diffuse transformation of the hepatic parenchyma into regenerative nodules without fibrosis. Portal vasculopathy caused by abnormal hepatic venous flow may induce hepatocyte hyperplasia, which forms regenerative nodules. Underlying diseases or certain drugs may also be the cause of NRH. This condition is often underdiagnosed as the patients remain asymptomatic until development of portal hypertension, and histopathologic confirmation by liver biopsy is the only way of making a definite diagnosis. The management mainly involves prevention and treatment of the complications of portal hypertension. The frequency of diagnosis of NRH has increased rapidly in recent years, however, only a few cases have been reported in Korea. Here, we report on a case of NRH of the liver combined with toxic hepatitis.
신석표 ( Suk Pyo Shin ),송상희 ( Sang Hee Song ),고은정 ( Eun Jung Ko ),김지수 ( Ji Su Kim ),박치영 ( Chi Young Park ),오도연 ( Do Yeun Oh ),정소영 ( So Young Chong ) 대한내과학회 2013 대한내과학회지 Vol.85 No.1
Therapy-related myeloid neoplasms have been well characterized. However, precursor B-cell acute lymphoblastic leukemia in patients with prior malignancies is uncommon, and the effect of prior cytotoxic therapy on development of precursor B-cell acute lymphoblastic leukemia is controversial. Therapy-related precursor B-cell acute lymphoblastic leukemia has been reported occasionally. However, cytotoxic therapy-related precursor B-cell acute lymphoblastic leukemia has been reported in Korea only rarely. We herein describe two cases of therapy-related precursor B-cell acute lymphoblastic leukemia. (Korean J Med 2013;85:96-100)
비장동맥의 가성동맥류에서 기인한 hemosuccus pancreaticus
조양현 ( Yang Hyun Cho ),권창일 ( Chang Il Kwon ),진선미 ( Sun Mi Jin ),송상희 ( Sang Hee Song ),박현정 ( Hyun Jung Park ),신대규 ( Dae Kyu Shin ),박필원 ( Pil Won Park ) 대한췌장담도학회 2015 대한췌담도학회지 Vol.20 No.1
Splenic artery pseudoaneurysm (SAP) is a rare condition, occurring from many causes like pancreatitis, peptic ulcer, surgery, abdominal trauma and iatrogenic origins. SAP poses a great challenge to clinicians because it can lead to a variety of symptoms from abdominal pain, nausea, vomiting to massive bleeding into gastrointestinal tracts as well as abdominal cavity. A 43-year-old female who had previously been managed for alcoholic chronic pancreatitis and thrombotic thrombocytopenic purpura was admitted with hematochezia and dizziness. Patient went into shock from bleeding, however, there was no bleeding focus on initial CT scan and gastroduodenoscopy. Shock occurred repeatedly due to the severe blood loss from gastrointestinal tracts. On the 4th day in hospital, duodenal bleeding was suspected on gastrointestinal bleeding scan and bleeding from ampulla of Vater was found on follow-up gastroduodenoscopy. SAP which causes hemosuccus pancreaticus was diagnosed on angiography and it was treated successfully by embolization.
이재준 ( Jae Joon Lee ),이민지 ( Min Ji Lee ),박효 ( Hyo Park ),전석재 ( Seok Jae Zeon ),임영민 ( Young Min Lim ),송상희 ( Sang Hee Song ),나동집 ( Dong Jib Na ),김은진 ( Eun Jin Kim ) 대한결핵 및 호흡기학회 2012 Tuberculosis and Respiratory Diseases Vol.72 No.2
Acute pulmonary embolism (PE) ranges from asymptomatic to often fatal, incidentally discovered emboli to massive embolism causing immediate death. Acute PE may occur rapidly and unpredictably and may be difficult to diagnose. Mortality and complications can be reduced by prompt diagnosis and therapy. Untreated PE is associated with a mortality rate of approximately 30 percents. Most patients with PE have endogenous fibrinolysis, although it is not effective enough to prevent PE. A case of spontaneous remission of untreated acute PE has not previously been reported. Here we present a case of spontaneously resolved acute PE without any treatment.