Bacterial virulence is also important ...

Primary invasive syndrome of liver abscess has been recognized in Asia for more than 20years, almost 1000reported presentations were published in 2008, it was reported less frequently in other regions. K. pneumonia

infection accounts for more than 80% of primary liver abscess, reported from Taiwan in 1990. More and more cases have been seen outside of Asia, especially among patients of Asian ethnicity, including the United States. ,

It is rarely reported in Australia so far. ,

Interesting lack of prior hepatobiliary disease, the relationship with diabetes and the risk of metastasis. Community-acquired KPLA was associated with severe metastatic complications, including endophthalmitis. As the leading cause of pyogenic liver abscesses unclear, although the selective pressure >> << a widespread use of amoxicillin, to which it is almost universally stable, was postulated. Genetic predisposition may have given the disease is seen almost exclusively in patients of Asian origin, even outside of Asia, and very rarely in the origin of the Caucasus. , K.

pneumonia often occurs as part of the normal fecal flora and spread to the liver, is believed to originate from the intestines through the portal. As a rule, any bacteria reaching the liver is then phagocytosed and killed, and the failure of this defense is supposed to lead to the formation of liver abscesses. Diabetes was present in 50% to 70% of patients reported from Taiwan

presumably conferring susceptibility disrupting neutrophil-mediated defense

and it also seems to be a risk factor for metastatic complications. It is interesting to note that none of the patients in our small sample of patients with diabetes. Bacterial virulence is also important, as the condition often affects previously healthy individuals. The presence of capsular polysaccharides

K. pneumonia serotype K1or K2has was closely associated with virulence for resistance to phagocytosis,,

, our patients were infected with one of these two serotypes. Usually, K.

pneumonia strains causing liver abscess are hypermucoviscous, as determined by an unusual, very slimy appearance on the culture of the colony, the function is closely related to K1or K2serotype. This stillness is the basis of the test line, which can easily be in the lab. The string test is quick, useful research in this situation (

). Colony, which extends more than 5 mm with a standard vaccine series gives a positive result on hypermucovisosity. K. pneumonia

isolates from Taiwan were more likely to have hypermucoviscous phenotype and belong K1or K2serotypes, than in other countries, except South Africa where invasive disease is also considered. Indeed, many of the

K. pneumonia capsular serotypes isolated from patients in Australian tertiary hospital setting, K1and K2accounted only 10of 293 (3. 5%), presentation. All of our patients in recent years in Asia, which increases the likelihood of exposure to these strains of the organism. However, reports in the U.S. have been associated with immigrants from Vietnam and Korea, which did not go home for several years. Third-generation cephalosporins such as ceftriaxone, as a rule, effective treatment, with good penetration into the vitreous fluid and cerebrospinal fluid, which allows for metastatic lesions in these areas. In the case of endophthalmitis, systemic antibiotics should be combined with intravitreal injection. The treatment required before the clinical status, biochemistry and radiology point resolution, often requiring antibiotics 4to 6weeks. Another mainstay of therapy computed tomography or ultrasound-guided percutaneous drainage of abscess. Surgical drainage may be necessary if percutaneous methods have failed, as it was in our patients 3 and 4. Metastasis is not uncommon complexity KPLA, reports from Taiwan to evaluate the frequency of between 3. 5% and 20%. ,

Endophthalmitis, lung abscess and meningitis are more common complications. Ophthalmic and other organs so that review is shown at KPLA diagnosis. Visual recovery in patients with endophthalmitis is often strattera 40mg poor, a high index of suspicion and early intervention, before visual changes observed can improve the result. Response to antibiotics, and drainage is usually good. In contrast to patients with underlying biliary tract disease, long-term relapse in patients with spontaneously occurring liver abscess are low. K. pneumonia

liver abscesses, Australian doctors should consider this condition, particularly but not exclusively, in patients of Asian origin with abdominal infection, or whose cultures reveal the organism. Under these conditions, hypermucoviscous isolate

K. pneumonia may belong to serotype K1or K2, and to be associated with metastatic disease, especially endophthalmitis, lung abscess and meningitis. .