Summary
Definition
History and exam
Key diagnostic factors
- presença de fatores de risco
- diarreia
Other diagnostic factors
- dor abdominal generalizada
- dor abdominal no quadrante superior direito
- perda de peso
- tosse
- febre
- estado mental alterado ou fraqueza dos membros
- dispneia
- defesa e dor à descompressão brusca do abdome
- icterícia
- murmúrio vesicular diminuído à direita e alteração na percussão
Risk factors
- exposição em áreas endêmicas
- institucionalização de pessoas com deficiência intelectual
- homens que fazem sexo com homens
- contato sexual oral-anal
- Infecção por HIV, infecção por sífilis vigente ou prévia
- sexo masculino
Diagnostic investigations
1st investigations to order
- microscopia das fezes
- reação em cadeia da polimerase (PCR) ou PCR quantitativa (qPCR) das fezes ou pus do abscesso hepático para ácido desoxirribonucleico (DNA) de E histolytica
- detecção do antígeno nas fezes
- teste de anticorpo sérico
Investigations to consider
- colonoscopia
- ultrassonografia do fígado
- radiografia torácica
- tomografia computadorizada (TC) do fígado/tórax/crânio
- ressonância nuclear magnética (RNM) cranioencefálica
Treatment algorithm
amebíase sintomática
amebíase assintomática
Contributors
Authors
Koji Watanabe, MD, PhD
Attending physician
AIDS Clinical Center
National Center for Global Health and Medicine
Tokyo
Japan
Disclosures
KW is an author of a number of references cited in this topic.
Acknowledgements
Dr Koji Watanabe would like to gratefully acknowledge Dr William A. Petri, a previous contributor to this topic. WAP is a consultant for TechLab, Inc. which manufactures diagnostic tests for amoebiasis and is also the author of a number of references cited in this topic.
Peer reviewers
Ran Nir-Paz, MD
Senior Lecturer in Microbiology and Medicine
Department of Clinical Microbiology and Infectious Diseases
Hadassah-Hebrew University Medical Center
Jerusalem
Israel
გაფრთხილება:
RNP declares that he has no competing interests.
Christopher Huston, MD
Assistant Professor of Medicine
Division of Infectious Diseases
University of Vermont College of Medicine
Burlington
VT
Disclosures
CH declares that he has no competing interests.
Peer reviewer acknowledgements
BMJ Best Practice topics are updated on a rolling basis in line with developments in evidence and guidance. The peer reviewers listed here have reviewed the content at least once during the history of the topic.
Disclosures
Peer reviewer affiliations and disclosures pertain to the time of the review.
References
Key articles
Centers for Disease Control and Prevention. CDC Yellow Book 2024: health information for international travel. Section 5: travel-associated infections & diseases - parasitic. Amebiasis. May 2023 [internet publication].Full text
Public Health England. Interim public health operational guidelines for amoebiasis (Entamoeba histolytica). Oct 2017 [internet publication].Full text
Gonzales MLM, Dans LF, Sio-Aguilar J. Antiamoebic drugs for treating amoebic colitis. Cochrane Database Syst Rev. 2019 Jan 9;1:CD006085.Full text Abstract
Reference articles
A full list of sources referenced in this topic is available to users with access to all of BMJ Best Practice.
Differentials
- Diarreia infecciosa
- Colite ulcerativa
- Abscesso hepático piogênico
More DifferentialsGuidelines
- CDC Yellow Book 2024: health information for international travel -amebiasis
- CDC Yellow Book 2024: health information for international travel - amebiasis
More GuidelinesPatient information
Disenteria amebiana: prevenção
Diarreia em crianças
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