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Article: Pyogenic liver abscesses caused by Klebsiella pneumoniae: US appearance and aspiration findings
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TitlePyogenic liver abscesses caused by Klebsiella pneumoniae: US appearance and aspiration findings
 
AuthorsHui, JYH2
Yang, MKW2
Cho, DHY2
Li, A2
Loke, TKL2
Chan, JCS2
Woo, PCY1
 
Issue Date2007
 
PublisherRadiological Society of North America, Inc. The Journal's web site is located at http://radiology.rsnajnls.org
 
CitationRadiology, 2007, v. 242 n. 3, p. 769-776 [How to Cite?]
DOI: http://dx.doi.org/10.1148/radiol.2423051344
 
AbstractPurpose: To retrospectively compare the ultrasonographic (US) appearance and amount of pus obtained at initial aspiration for liver abscesses caused by Klebsiella pneumoniae with those for liver abscesses caused by other bacterial pathogens. Materials and Methods: This study had medical ethics committee approval; informed consent was not required. Asian patients with pyogenic liver abscesses in a 5-year period were included. Abscess clinical, laboratory, and microbiologic characteristics and treatment and outcome were analyzed. US images were classified according to the size of the largest liver abscess, the echogenic pattern of the lesion, the presence of any echogenic debris within the lesion, increased through transmission in the posterior aspect of the lesion, and the lesion margin. Clinical and US characteristics of patients with K pneumoniae monomicrobial liver abscesses and those with non-K pneumoniae monomicrobial or polymicrobial liver abscesses were compared. The χ2 or Fisher exact test was used for categorical variables; the Student t test was used for continuous variables. Results: There were 120 patients with pyogenic liver abscesses. Median patient age was 69 years (range, 13-94 years). Fifty-nine patients were male, and 61 were female. Fifty patients with K pneumoniae monomicrobial and 33 patients with non-K pneumoniae monomicrobial or polymicrobial liver abscesses underwent US. K pneumoniae monomicrobial liver abscesses were associated with diabetes mellitus (P < .001), higher blood glucose levels at admission (P < .05), predominantly solid US appearances (P < .001), irregular or indistinct lesion margins (P < .05), less than 2 mL of pus aspirated (P < .001), and longer duration of antibiotic treatment (P < .05). Conclusion: A predominantly solid appearance at US is associated with K pneumoniae monomicrobial liver abscess. K pneumoniae liver abscess is associated with a much smaller quantity of pus at initial aspiration. © RSNA, 2007.
 
ISSN0033-8419
2013 Impact Factor: 6.214
 
DOIhttp://dx.doi.org/10.1148/radiol.2423051344
 
ISI Accession Number IDWOS:000244679200015
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorHui, JYH
 
dc.contributor.authorYang, MKW
 
dc.contributor.authorCho, DHY
 
dc.contributor.authorLi, A
 
dc.contributor.authorLoke, TKL
 
dc.contributor.authorChan, JCS
 
dc.contributor.authorWoo, PCY
 
dc.date.accessioned2010-09-06T07:50:12Z
 
dc.date.available2010-09-06T07:50:12Z
 
dc.date.issued2007
 
dc.description.abstractPurpose: To retrospectively compare the ultrasonographic (US) appearance and amount of pus obtained at initial aspiration for liver abscesses caused by Klebsiella pneumoniae with those for liver abscesses caused by other bacterial pathogens. Materials and Methods: This study had medical ethics committee approval; informed consent was not required. Asian patients with pyogenic liver abscesses in a 5-year period were included. Abscess clinical, laboratory, and microbiologic characteristics and treatment and outcome were analyzed. US images were classified according to the size of the largest liver abscess, the echogenic pattern of the lesion, the presence of any echogenic debris within the lesion, increased through transmission in the posterior aspect of the lesion, and the lesion margin. Clinical and US characteristics of patients with K pneumoniae monomicrobial liver abscesses and those with non-K pneumoniae monomicrobial or polymicrobial liver abscesses were compared. The χ2 or Fisher exact test was used for categorical variables; the Student t test was used for continuous variables. Results: There were 120 patients with pyogenic liver abscesses. Median patient age was 69 years (range, 13-94 years). Fifty-nine patients were male, and 61 were female. Fifty patients with K pneumoniae monomicrobial and 33 patients with non-K pneumoniae monomicrobial or polymicrobial liver abscesses underwent US. K pneumoniae monomicrobial liver abscesses were associated with diabetes mellitus (P < .001), higher blood glucose levels at admission (P < .05), predominantly solid US appearances (P < .001), irregular or indistinct lesion margins (P < .05), less than 2 mL of pus aspirated (P < .001), and longer duration of antibiotic treatment (P < .05). Conclusion: A predominantly solid appearance at US is associated with K pneumoniae monomicrobial liver abscess. K pneumoniae liver abscess is associated with a much smaller quantity of pus at initial aspiration. © RSNA, 2007.
 
dc.description.naturelink_to_subscribed_fulltext
 
dc.identifier.citationRadiology, 2007, v. 242 n. 3, p. 769-776 [How to Cite?]
DOI: http://dx.doi.org/10.1148/radiol.2423051344
 
dc.identifier.doihttp://dx.doi.org/10.1148/radiol.2423051344
 
dc.identifier.epage776
 
dc.identifier.hkuros149570
 
dc.identifier.isiWOS:000244679200015
 
dc.identifier.issn0033-8419
2013 Impact Factor: 6.214
 
dc.identifier.issue3
 
dc.identifier.openurl
 
dc.identifier.pmid17325065
 
dc.identifier.scopuseid_2-s2.0-33847188800
 
dc.identifier.spage769
 
dc.identifier.urihttp://hdl.handle.net/10722/79069
 
dc.identifier.volume242
 
dc.languageeng
 
dc.publisherRadiological Society of North America, Inc. The Journal's web site is located at http://radiology.rsnajnls.org
 
dc.publisher.placeUnited States
 
dc.relation.ispartofRadiology
 
dc.relation.referencesReferences in Scopus
 
dc.subject.meshAdolescent
 
dc.subject.meshAdult
 
dc.subject.meshAged
 
dc.subject.meshAged, 80 and over
 
dc.subject.meshBiopsy, Needle - methods
 
dc.subject.meshFemale
 
dc.subject.meshHumans
 
dc.subject.meshKlebsiella Infections - pathology - ultrasonography
 
dc.subject.meshKlebsiella pneumoniae - isolation & purification
 
dc.subject.meshLiver Abscess, Pyogenic - pathology - ultrasonography
 
dc.subject.meshMale
 
dc.subject.meshMiddle Aged
 
dc.subject.meshReproducibility of Results
 
dc.subject.meshSensitivity and Specificity
 
dc.subject.meshUltrasonography - methods
 
dc.titlePyogenic liver abscesses caused by Klebsiella pneumoniae: US appearance and aspiration findings
 
dc.typeArticle
 
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<contributor.author>Loke, TKL</contributor.author>
<contributor.author>Chan, JCS</contributor.author>
<contributor.author>Woo, PCY</contributor.author>
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<description.abstract>Purpose: To retrospectively compare the ultrasonographic (US) appearance and amount of pus obtained at initial aspiration for liver abscesses caused by Klebsiella pneumoniae with those for liver abscesses caused by other bacterial pathogens. Materials and Methods: This study had medical ethics committee approval; informed consent was not required. Asian patients with pyogenic liver abscesses in a 5-year period were included. Abscess clinical, laboratory, and microbiologic characteristics and treatment and outcome were analyzed. US images were classified according to the size of the largest liver abscess, the echogenic pattern of the lesion, the presence of any echogenic debris within the lesion, increased through transmission in the posterior aspect of the lesion, and the lesion margin. Clinical and US characteristics of patients with K pneumoniae monomicrobial liver abscesses and those with non-K pneumoniae monomicrobial or polymicrobial liver abscesses were compared. The &#967;2 or Fisher exact test was used for categorical variables; the Student t test was used for continuous variables. Results: There were 120 patients with pyogenic liver abscesses. Median patient age was 69 years (range, 13-94 years). Fifty-nine patients were male, and 61 were female. Fifty patients with K pneumoniae monomicrobial and 33 patients with non-K pneumoniae monomicrobial or polymicrobial liver abscesses underwent US. K pneumoniae monomicrobial liver abscesses were associated with diabetes mellitus (P &lt; .001), higher blood glucose levels at admission (P &lt; .05), predominantly solid US appearances (P &lt; .001), irregular or indistinct lesion margins (P &lt; .05), less than 2 mL of pus aspirated (P &lt; .001), and longer duration of antibiotic treatment (P &lt; .05). Conclusion: A predominantly solid appearance at US is associated with K pneumoniae monomicrobial liver abscess. K pneumoniae liver abscess is associated with a much smaller quantity of pus at initial aspiration. &#169; RSNA, 2007.</description.abstract>
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Author Affiliations
  1. The University of Hong Kong
  2. United Christian Hospital Hong Kong