A Case of Colon Obstruction Developed during the Recovery Period of Acute Pancreatitis / 대한소화기학회지

Complications of acute pancreatitis usually occur in pancreas and its contiguous organs. The prevalence of colonic invasion is rare, however, the consequence is fatal, with mortality above 50%. The initial symptoms and onset times are variable and major affected sites are transverse colon and splenic flexure. The spread of inflammatory exudates into the colon is the main mechanism of colonic invasion. If the colonic stenosis develops, it is necessary to manage it surgically. We report a case who arrived at the hospital with watery diarrhea and abdominal distension in the recovery period of acute alcoholic pancreatitis and was diagnosed as a colonic obstruction in the splenic flexure. The patient underwent loop ileostomy instead of the resection of the lesion because of severe adhesion around the splenic flexure. The patient died due to sepsis 5 days after the operation.

Glutathione Levels in Helicobacter pylori-infected Gastric Mucosa / 대한소화기학회지

BACKGROUND/AIMS: Oxidative stress may contribute to gastric epithelial damage and mutagenesis caused by Helicobacter pylori (H. pylori). H. pylori induces recruitment and activation of inflammatory cells, which produces reactive oxygen species. H. pylori extract directly induces the synthesis of reactive oxygen species in gastric epithelial cells and causes DNA damage. The aim of this study was to investigate the association between the levels of glutathione (GSH) and H. pylori density, histological findings, endoscopic findings, clinical variables, and virulence factors. METHODS: Gastric biopsy specimens were obtained from 73 consecutive patients. The 5,5'-dithiobis-(2-nitrobenzoic acid) reaction was used to determine GSH levels. RESULTS: The infection rate of H. pylori was 68.5%. The GSH level was not related to age, sex, alcohol intake, and endoscopic findings. The GSH level was lower in patients infected with H. pylori. GSH levels were not correlated significantly with the grades of neutrophil, intestinal metaplasia, and atrophy. However, the GSH levels were significantly correlated with H. pylori density (r=-0.296, p=0.01) and monocyte grade (r=-0.257, p=0.02). The GSH levels were not related to CagA, VacA, and UreA. CONCLUSIONS: This study suggests that H. pylori causes oxidative stresses which deplete GSH in gastric mucosa of patients infected with H. pylori.

Glutathione Levels in Helicobacter pylori-infected Gastric Mucosa / 대한소화기학회지

BACKGROUND/AIMS: Oxidative stress may contribute to gastric epithelial damage and mutagenesis caused by Helicobacter pylori (H. pylori). H. pylori induces recruitment and activation of inflammatory cells, which produces reactive oxygen species. H. pylori extract directly induces the synthesis of reactive oxygen species in gastric epithelial cells and causes DNA damage. The aim of this study was to investigate the association between the levels of glutathione (GSH) and H. pylori density, histological findings, endoscopic findings, clinical variables, and virulence factors. METHODS: Gastric biopsy specimens were obtained from 73 consecutive patients. The 5,5'-dithiobis-(2-nitrobenzoic acid) reaction was used to determine GSH levels. RESULTS: The infection rate of H. pylori was 68.5%. The GSH level was not related to age, sex, alcohol intake, and endoscopic findings. The GSH level was lower in patients infected with H. pylori. GSH levels were not correlated significantly with the grades of neutrophil, intestinal metaplasia, and atrophy. However, the GSH levels were significantly correlated with H. pylori density (r=-0.296, p=0.01) and monocyte grade (r=-0.257, p=0.02). The GSH levels were not related to CagA, VacA, and UreA. CONCLUSIONS: This study suggests that H. pylori causes oxidative stresses which deplete GSH in gastric mucosa of patients infected with H. pylori.

Clinical Usefulness of Plasma Activities of Gelatinase (Matrix Metalloproteinase-2 and 9) in Chronic Liver Disease / 대한간학회지

BACKGROUND/AIMS: Gelatinase (matrix metalloproteinase (MMP) -2 and 9) has an important role in the pathogenesis of liver cirrhosis (LC) and hepatocellular carcinoma (HCC). In this study, we evaluated the relationship of gelatinase to chronic liver disease. METHODS: Four groups of subjects were examined; healthy control (10 cases), chronic hepatitis (18 cases), LC (15 cases), and HCC (28 cases). The plasma of each subject was obtained, and the equal quantification of plasma protein was done. The plasma activities of MMP-2 and 9 were measured by zymography. RESULTS: The activities of plasma MMP-2 in patients with LC were significantly higher than those in controls (p=0.009) and in patients with chronic hepatitis (p=0.011), but not different from those in patients with HCC. The activities of plasma MMP-9 in patients with LC were significantly higher than those in controls, but not different from those in patients with chronic hepatitis or HCC. In patients with LC (regardless of having HCC), the activities of MMP-2 correlated with total bilirubin (r=0.323, p=0.048) and Child-Pugh score (r=0.414, p=0.012). The activities of MMP-2 and 9 were higher in patients with LC (regardless of having HCC) caused by alcohol than caused by HBV (p=0.009 and 0.002 for each one). CONCLUSIONS: The plasma activity of MMP-2 may be a useful marker for the diagnosis and determination of the severity of LC. The plasma activity of MMP-9 was not useful for HCC, but may be a marker for alcoholic LC. Further study is needed to determine why the plasma activity of gelatinase was higher in patients with LC caused by alcohol than by HBV.

Polymorphism in Codons 10 and 25 of the Transforming Growth Factor-beta1 Gene in Korean Population and in Patients with Liver Cirrhosis and Hepatocellular Carcinoma / 대한소화기학회지

BACKGROUND/AIMS: The genetic polymorphism of transforming growth factor-beta1 (TGF-beta1) at codons 10 and 25 which influences the production of TGF-beta1 is related to fibrogenesis in the lung and liver. We evaluated the genetic polymorphism at codons 10 and 25 in controls and in patients with liver cirrhosis (LC) and hepatocellular carcinoma (HCC). METHODS: Blood samples were collected from controls (n=35), patients with LC (n=64), and HCC (n=49). Genomic DNA was isolated and polymerase chain reaction (PCR) was done for a segment including codons 10 and 25. The results of direct sequencing for PCR products were compared between the controls and the patients. RESULTS: There was no genetic polymorphism at codon 25 and three types of genetic polymorphism at codon 10. The leucine homozygous genotype (CTG/CTG) at codon 10 was more common in patients with LC than the controls (p=0.01) and especially in patients with LC caused by HBV (p=0.004). The polymorphism at codons 10 in patients with HCC was similar to the controls. However, leucine homozygous genotype was more common in patients with HCC of uninodular morphology than those of massive morphology (p=0.007). CONCLUSIONS: The genetic polymorphism of TGF-beta1 at codon 10 might be associated with LC and morphology of HCC. The potential usefulness of TGF-beta1 genotyping needs further studies in large scale.

A Case Intestinal Mucormycosis Healing of Ulcer after Only Amphotericin B Treatment / 대한소화기내시경학회지

Mucormycosis is an uncommon, frequently fatal, opportunistic fungal infection and usually occur in immunocompromised patients. Rhinocerebral and pulmonary disease are the common forms but intestinal infection is an extremely rare form of the disease. Invasive intestinal mucormycosis is usually fatal, therefore, few cases reported survival after early diagnosis and surgical resection combined with antifungal treatment. Because of high mortality after surgery, the healing of ulcers caused by intestinal mucormycosis has not previously observed in immunocompromised host. We reported a case of the intestinal mucormycosis that had been healed the ulcer and symptomatic improvement after only amphotericin B.

A Case of Synchronous Double Primary Cancer with Esophageal Small Cell Carcinoma and Lung Squamous Cell Carcinoma / 대한소화기내시경학회지

Double primary cancer means that more than two cancers with different origin exist independently in an individual. The diagnosis of double primary cancer was determined by following criteria. Each of the tumors must present a definite picture of malignancy, each must be distance, and the probability of one being a metastasis of the other must be excluded. Primary small cell carcinoma in the esophagus is relatively rare, and rarer when it is combined with other malignant disease. A review of the Korean medical literature failed to reveal any previously described the case of syn-chronous double primary cancer of primary esophageal small cell carcinoma and squamous cell carcinoma of lung. Recently, we have experienced a case of double primary cancer, a 65-year-old man with primary esophageal small cell carcinoma and squamous cell carcinoma of lung, which were diagnosed by endoscopic biopsy and bronchoscopic biopsy.

Clinical Study of Gastrointestinal Carcinoid Tumors / 대한소화기내시경학회지

BACKGROUND/AIMS: Carcinoid tumors are often indolent asymptomatic tumors, however significant proportions are malignant. The patients with these tumors have usually been treated by radical excision. Recently, small gastrointestinal carcinoid tumors can be easily be detected with increasing use of endoscopy and surgical treatment has been questioned. We evaluate clinical characteristics of gastrointestinal carcinoid tumors and clinical usefulness of endoscopic resection in treatment of gastrointestinal carcinoid tumors. METHODS: We reviewed the medical records of 37 cases of gastrointestinal carcinoid tumors over the past three years in our instituide. RESULTS: The peak incidence was in the 5th decade and slight male predominance. The most comgastrointestinal carcinoid tumors were diagnosed by endoscopy with biopsy. Twenty-six cases of carcinoid tumors of size less than 15 mm have been safely treated with endoscopic resection. All of the patients are alive and clinically free of disease during 23 months after endoscopic resection. CONCLUSIONS: Recently, the detection of small carcinoid tumors in gastrointestinal tract, especially in rectum, is increasing with frequent use of endoscopy. Endoscopic resection was found to be useful and safe for treatment of small gastrointestinal carcinoid tumors.

Clinical and Virologic Characteristics of Lamivudine Resistance in HBV-associated Chronic Liver Disease / 대한간학회지

BACKGROUND/AIMS: Lamivudine therapy in chronic hepatitis B has been shown to be effective in inhibiting HBV replication. However, lamivudine resistance has been developed with prolonged use. We studied to determine the prevalence, predictive factors, and clinical outcomes of lamivudine resistance. Mutations in YMDD motif of HBV polymerase, which have been associated with lamivudine resistance, were also assessed. METHODS: 170 patients with HBV-associated chronic liver disease who have received lamivudine for at least one year, were studied. The clinical, biochemical, and virologic characteristics were analyzed and compared according to presence (resistance group) or absence (non-resistance group) of DNA breakthrough. Their clinical outcomes were regularly followed. Stored sera before treatment and after DNA breakthrough were examined for detection of HBV polymerase mutation by direct sequencing and/or RFLP. RESULTS: Cumulative rates of lamivudine resistance after one and two years of treatment were 11% and 34%, respectively. In the resistance group, as compared to the non-resistance group, age, the presence of HBeAg before treatment, and disappearance of HBeAg during treatment, were significantly different. The predictive factors associated with lamivudine resistance were not found. ALT and HBV-DNA level after lamivudine resistance was variable, but jaundice or hepatic failure was absent. Mutation in YMDD motif was detected in 73% and other variable mutations were detected before treatment and after DNA breakthrough. CONCLUSIONS: Lamivudine resistance increases the longer the duration of treatment and clinical outcomes are variable. The mutation in YMDD motif was found in about 2/3 of cases. Other causes for lamivudine resistance may be considered.

Three Case of Acute Pancreatitis Complicating Endoscopic Insertion of the Biliary Stent / 대한소화기내시경학회지

Acute pancreatitis is one of the major complications of endoscopic retrograde cholangiopancreatography (ERCP) and endoscopic sphincterotomy (EST). Various etiology such as mechanical, chemical, hydrostatic, and thermal factor are thought to be involved for this procedure-related pancreatitis. However, acute pancreatitis can occur as a direct complication of endoscopic biliary drainage (EBD). Although the exact mechanism remains unclear, it is postulated that the stent compresses pancreatic ductal orifice and resultant pancreatic outflow obstruction actually provokes pancreatitis. Using the larger stent diameter over 10 Fr and a straight stent rather than curved one, proximal rather than distal bile duct obstruction are risk factors for stent-induced pancreatitis. We report on three cases of acute pancreatitis complicating the EBD with a plastic stent, nasobiliary catheter, and covered-metallic stent respectively.

A case of infected abdominal aortic aneurysm associated with liver abscess treated by endovascular stent / 대한내과학회지

A 72-year-old diabetic male patient with high grade fever, right upper quadrant abdominal pain and Klebsiella pneumoniae septicemia is reported. He suffered from high fever and abdominal pain in spite of aspiration of liver abscess and antibiotic treatment. A few days later, we found a palpable pulsating abdominal mass on physical examination. Computed tomography and angiography revealed infected abdominal aortic aneurysm associated with pyogenic liver abscess. He was treated by antibiotics and Endovascular stent without surgical resection. He improved without complications and has been followed-up after discharge with excellent condition. To our knowledge, this is the first case of infected abdominal aortic aneurysm as a septic metastatic lesion secondary to liver abscess.

A case of rotor syndrome / 대한내과학회지

Rotor syndrome is a rare benign familial disorder characterized by chronic, fluctuating, nonhemolytic and predominantly conjugated hyperbilirubinemia with normal liver tissue. In contrast to Dubin-Johnson syndrome, there is no liver hyperpigmentation in Rotor syndrome, and BSP clearance does not show a secondary retention peak. The serum bilirubin in patients with Gilbert's syndrome is almost all unconjugated in contrast to Rotor syndrome. A 29-year-old male was admitted due to persistent jaundice. Physical examination revealed icteric sclera without hepatosplenomegaly. Laboratory findings showed increased serum bilirubin with indirect bilirubin predominance. Urinary excretion of total coproporphyrin was markedly elevated, and coproporphyrin I was 66% of total urinary coproporphyrin. Oral cholecystography showed well visualized the gallbladder, but 99mTc-DISIDA scan showed markedly decreased hepatic uptake and poor visualization of the gallbladder and biliary tract. Histology of the liver showed no abnormal finding. We report the case with the review of literature.

The role of mitochondrial aldehyde dehydrogenase (ALDH) deficiency in Koreans with alcoholic liver disease / 대한내과학회지

No abstract available.