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**Perkinese
**Perkinese
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Image:Boston_terrier.jpg|'''Boston Terrier'''<p>WikiCommons
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==Description==
==Description==
'''Perineal hernia''' is the protrusion of the pelvic or abdominal viscera through the structures of the pelvic diaphragms, causing the displacement of the perineal skin. It occurs when the pelvic diaphragm weakens. Possible implicated aetiologies are:
'''Perineal hernia''' is the protrusion of the pelvic or abdominal viscera through the structures of the pelvic diaphragms, causing the displacement of the perineal skin. It occurs when the pelvic diaphragm weakens. Possible implicated aetiologies are: