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==Signalment==
==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 aetiologies are:
*hormonal imbalance
*tenesmus
*structural weakness of the pelvic diaphragm; female dogs have stronger pelvic diaphragm muscles compared to male dogs
*congenital predisposition
*prostatic disease
==Diagnosis==
===Clinical Signs===
===Laboratory Tests===
====Haematology====
====Biochemistry====
====Other Tests====
===Diagnostic Imaging===
===Histopathology===
==Treatment==
==Prognosis==
==References==
*Ettinger, S.J. and Feldman, E. C. (2000) '''Textbook of Veterinary Internal Medicine Diseases of the Dog and Cat Volume 2''' (Fifth Edition) ''W.B. Saunders Company''.
*Hall, E.J, Simpson, J.W. and Williams, D.A. (2005) '''BSAVA Manual of Canine and Feline Gastroenterology (2nd Edition)''' ''BSAVA''
*Nelson, R.W. and Couto, C.G. (2009) '''Small Animal Internal Medicine (Fourth Edition)''' ''Mosby Elsevier''.