Amoebic liver abscess other diagnostic studies

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Associate Editor(s)-in-Chief: Yamuna Kondapally, M.B.B.S[2]

Other Diagnostic Tests

Needle aspiration

• Needle aspiration is used to differentiate between amoebic and pyogenic liver abscess
• The ultrasound and CT are used to guide percutaneous aspiration and drainage.
• The aspirated fluid is odorless unless secondarily infected
• The pathognomonic of the aspirate is the reddish-brown anchovy paste appearance, which indicates that the abscess has been present for weeks.
• The trophozoites are present only in the wall of the abscess. Rest of abscess is composed of lysed leukocytes.

Laboratory Method	Findings
Microscopy
Culture Methods
Isoenzyme analysis
Antibody Detection Tests
Antigen Detection Tests
Immunochromatographic Assays