PMC7814283_01
Cyst found in the right ventricle of the heart.
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Internal organs were unremarkable except for the heart, which was found to be enlarged, weighing 530g (normal range: 260-350g) with an external bulging on the right ventricle outlet ( Figure 1).
Right ventricle intra-cavitary cyst (after fixation in formalin).
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The left ventricle was 12mm of thick ( Figure 2).
Microscopic appearance of the cyst wall.. Haematoxylin and eosin, x40 magnification.
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Microscopic examination using haematoxylin and eosin staining of paraffin sections of the cyst revealed classic layers of a hydatid cyst; pericyst (fibrous outer layer), ectocyst (laminated, hyaline and acellular middle layer) and endocyst (inner germinative layer) ( Figure 3).