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Liver abscess can be caused by bacterial, parasitic, or fungal infection. Amebic abscesses are more common, but pyogenic abscesses account for three quarters of hepatic abscess in developed countries. Most common pathogens of the pyogenic liver abscess are Escherichia coli, Klebsiella pneumoniae, Bacteroides, Enterococci, Streptococci, and Staphylococci. However, liver abscess caused by Salmonella species has rarely been reported. We experienced a case of Salmonella liver abscess which improved after antibiotic therapy and percutaneous drainage. The patient was 52 years-old man who had an episode of intermittent fever, chills and epigastric pain for 2 weeks. He was diagnosed as liver cirrhosis eight years ago and diabetes three years ago. Salmonella group D, non-typhi was cultured from blood and pus from the liver respectively at the same time. With percutaneous drainage and susceptible antibiotic therapy, liver abscess decreased in size with improvements in fever and abdominal pain.
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PMID:[A case of Salmonella liver abscess]. 1663 85

Major hepatobiliary infections include cholangitis and liver abscess. Liver abscess is typically either of pyogenic or amebic origin. Amebic liver abscess usually occurs in individuals from endemic areas or those traveling to endemic areas and is associated with an excellent prognosis if properly managed, usually with one of several antiamebicidal drugs alone. Pyogenic liver abscess is most often cryptogenic in origin, although sophisticated advanced interventional procedures such as transarterial embolization and cryoablation are leading to a new generation of patients with pyogenic liver abscess. A distinct clinical entity appears to be evolving, namely that of monomicrobial Klebsiella pneumoniae pyogenic liver abscess, characterized by the same symptoms and signs as classic pyogenic liver abscess, but further distinguished by the presence of diabetes mellitus, a paucity of coexistent intra-abdominal pathology, a single cavity, and an excellent prognosis. As of 1999, the vast majority of pyogenic liver abscesses should be approached therapeutically by percutaneous aspiration or drainage techniques. The overall prognosis for patients with pyogenic liver abscess is improving, although poor outcomes are common in patients with serious underlying medical disorders, especially malignancy.
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PMID:Hepatobiliary infections. 1702 49

We conducted this study to compare clinical features, outcomes, and clinical implication of antimicrobial resistance in Klebsiella pneumoniae bacteremia acquired as community vs. nosocomial infection. A total of 377 patients with K. pneumoniae bacteremia (191 community-acquired and 186 nosocomial) were retrospectively analyzed. Neoplastic diseases (hematologic malignancy and solid tumor, 56%) were the most commonly associated conditions in patients with nosocomial bacteremia, whereas chronic liver disease (35%) and diabetes mellitus (20%) were the most commonly associated conditions in patients with community-acquired bacteremia. Bacteremic liver abscess occurred almost exclusively in patients with community-acquired infection. The overall 30-day mortality was 24% (91/377), and the mortality of nosocomial bacteremia was significantly higher than that of community-acquired bacteremia (32% vs. 16%, p<0.001). Of all community-acquired and nosocomial isolates, 4% and 33%, respectively, were extended-spectrum cephalosporin (ESC)-resistant, and 4% and 21%, respectively, were ciprofloxacin (CIP)-resistant. In nosocomial infections, prior uses of ESC and CIP were found to be independent risk factors for ESC and CIP resistance, respectively. Significant differences were identified between community-acquired and nosocomial K. pneumoniae bacteremia, and the mortality of nosocomial infections was more than twice than that of community-acquired infections. Antimicrobial resistance was a widespread nosocomial problem and also identified in community-acquired infections.
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PMID:Community-acquired versus nosocomial Klebsiella pneumoniae bacteremia: clinical features, treatment outcomes, and clinical implication of antimicrobial resistance. 1772 28

Primary Klebsiella pneumoniae liver abscess with metastatic complications is a globally emerging infectious disease and is the leading cause of liver abscess in Taiwan. Host immunity and bacterial virulence, especially of the capsular polysaccharide type, are important in determining clinical manifestations. Investigators retrospectively studied the K pneumoniae genotype and capsular serotype from patients with 37 strains of liver abscess; no correlation was noted with genotype, and many genetically different strains caused liver abscess. Although K pneumoniae is prevalent in patients with diabetes, it can attack healthy or alcoholic people as well. Additional studies are needed to explore the mechanisms of bacterial virulence and to optimize treatment strategies. Physicians should be alert to the illness and its complications.
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PMID:A clinical survey of Klebsiella pneumoniae virulence and genotype in pyogenic liver abscess. 1766 Jan 68

Hemorrhoidal banding is a well-established and safe outpatient procedure. Septic complications of hemorrhoidal banding are rare but can be fatal. The first case of pylephlebitis (septic portal vein thrombosis) and pyogenic liver abscess following hemorrhoidal banding in a 49-year-old man with diabetes is reported in the present study. Risk factors, management and the role of prophylaxis in immunocompromised patients are discussed. Caution against hemorrhoidal banding in immunosuppressed patients, including patients with diabetes, is warranted.
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PMID:Pylephlebitis and pyogenic liver abscesses: a complication of hemorrhoidal banding. 1785 56

Gas-forming pyogenic liver abscess (GPLA) is rare and is associated with a high mortality rate. It is commonly associated with underlying diabetes mellitus (DM). Gas formation occurs as a result of mixed acid fermentation within the abscess by formic hydrogenlyase, an enzyme produced by certain bacteria. Presentations can be nonspecific leading to a delay in diagnosis. Management includes urgent drainage of the abscess. We report three cases of GPLA as a result of Klebsiella spp. and Escherichia coli infections. All three patients had DM and were very sick at presentation. Diagnosis was delayed in one patient and this likely contributed to his death. Hospitalisations were prolonged. These cases highlight the need to consider GPLA in diabetic patients presenting with fever, abdominal pain, nonspecific symptoms or septic shock.
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PMID:Gas-forming pyogenic liver abscess. 1846 35

The increasing prevalence of Klebsiella pneumoniae liver abscess in Asian countries is attributable to virulent strains of the K1 serotype. We investigated the risk factors for the K1 serotype K. pneumoniae liver abscess. A case-control study was performed using the database of a nationwide study of liver abscess in Korea. Multivariate logistic regression analysis was performed for 78 cases of the K1 serotype K. pneumoniae liver abscess and 81 controls with non-Klebsiella. Diabetes mellitus was the significant risk factor (OR 2.13; 95% CI 1.026 approximately 4.428; P = 0.042) for the K1 serotype K. pneumoniae liver abscess. Biliary disorders had a strong negative association (OR 0.18; 95% CI 0.078 approximately 0.410; P < 0.001). This study suggests that diabetes mellitus is a more significant risk factor for the K1 serotype K. pneumoniae liver abscess than for the non-Klebsiella liver abscess.
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PMID:Risk factor analysis of invasive liver abscess caused by the K1 serotype Klebsiella pneumoniae. 1866 97

Pyogenic liver abscess has become a health problem in Taiwanese society. However, the extent of this problem has remained unclear because of the lack of a population-based study. We therefore performed a nationwide analysis of pyogenic liver abscess in Taiwan from 1996 through 2004. We analyzed 29,703 cases from the Taiwan National Health Insurance database and 506 cases from National Taiwan University Hospital. Our analysis showed that the annual incidence of pyogenic liver abscess increased steadily from 11.15/100,000 population in 1996 to 17.59/100,000 in 2004. Diabetes, malignancy, renal disease, and pneumonia were associated with a higher risk for the disease. By contrast, death due to pyogenic liver abscess decreased over time, although population-based abscess-related death increased slightly. Renal disease, malignancy, pneumonia, and heart disease correlated with higher death rates; Klebsiella pneumoniae infection and therapeutic procedures were related to lower death rates. Diabetes did not significantly change death rates for the 506 patients from the hospital.
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PMID:Pyogenic liver abscess as endemic disease, Taiwan. 1882 24

Pyogenic-liver abscesses are due to bacteria mostly from the portal and biliary tracts. There is usually only one located in the right liver, but they may be found in the left liver, be multiple or multilocular. Diagnosis, based on ultrasound and/or computed tomography scan, is confirmed by percutaneous-needle aspiration to identify the bacteria causing the disease. Global management includes the treatment of sepsis and the aetiology of the liver abscess: biliary lithiasis, diverticular disease, colon cancer, appendicitis or other intra-abdominal infections. However, no cause is found in 20% of cases. Treatment is based on antibiotics and, sometimes, percutaneous drainage while the cause may be treated immediately or later if the sepsis is controlled. Interventional radiology is often used. Surgery may be performed in case of failure of initial treatment and to cure the cause of the abscess. Prognosis may be poor, especially if there are associated-risk factors, such as diabetes and immunodepression, even though the outcome has improved with a multidisciplinary approach.
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PMID:[Pyogenic-liver abscess: diagnosis and management]. 1901 4

Pyogenic liver abscess is still considered a medical challenge due to the seriousness of the clinical course, late diagnosis, and usually high mortality. Gas-forming liver abscess is not uncommon, the incidence among all pyogenic liver abscess is around 7 to 24 %, mostly in individuals in their sixth and seventh decades ,and with diabetes mellitus disease. The epidemiology of gas-forming liver abscess has been changing with a shift from young to older diabetic adults. A clinical case of a 71 year old diabetic female with gas-forming liver abscess is presented; we describe the clinical course and treatment is analyzed.
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PMID:[Gas-forming liver abscess in diabetic patient]. 1913 94


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