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Breast-nonmalignant
Parasites
Echinococcal cyst
Reviewer: Hind Nassar, M.D. in January 2009 (see Authors page)
Revised: 9 July 2010, last major update March 2010
Copyright: (c) 2002-2010, PathologyOutlines.com, Inc.
Definition
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● See also discussion in Liver-non tumor chapter
● Due to infestation by larval form of Echinococcus granulosus, endemic in sheep rearing countries
● Rare, but consider in differential diagnosis of a breast mass in endemic regions
Terminology
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● Also called hydatid cyst
Epidemiology
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Etiology
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Life cycle
Clinical features
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Prognostic factors
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Case reports
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● 56 year old woman with diagnosis by fine needle aspiration (Rev Med Interne 2007;28:336)
● Patient with masses in pancreas and breast (JOP 2004;5:368)
Treatment
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● Surgery plus albendazole or mebendazole before and after surgery
Clinical images
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Ruptured cyst and part of
germinative membrane
Other images: liver
Gross description (Macroscopy)
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Gross images
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Liver
Micro description (Histopathology)
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Micro images
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Scolices Liver: daughter cysts with germinal layer and scolices
Adrenal gland:
Virtual Slides
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Videos
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Cytology description
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Cytology images
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Positive stains
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Negative stains
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Electron microscopy descriptions
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Electron microscopy images
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Molecular / cytogenetics description
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Molecular / cytogenetics images
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Differential Diagnosis
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Additional references
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End of Breast-nonmalignant > Parasites > Echinococcal cyst
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