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Spontaneous venous thrombosis is rare. Seen in cattle with traumatic reticulo-peritonitis in the caudal vena cava.
Spontaneous venous thrombosis is rare. Seen in cattle with traumatic reticulo-peritonitis in the caudal vena cava.
===Description===
===Description===
Thrombosis is a localized or generalized intravascular clot formation. Thrombi form as the result of trauma or pathological processes affecting the blood vessel endothelium or disturbances to blood flow and/or blood composition. Some diseases such as infective endocarditis and heart worm increase the risk of thrombi formation.
Thrombosis is a localized or generalized intravascular clot formation. Thrombi form as the result of trauma or pathological processes affecting the blood vessel endothelium or disturbances to blood flow and/or blood composition. Some diseases such as infective endocarditis and heart worm increase the risk of thrombi formation.
===Diagnosis===
===Diagnosis===
====Dogs and Horse====
====Dogs and Horse====
[[Image:thrombosis dog nose.jpg|right|thumb|200px|<small><center>'''Nasal thrombosis (dog)'''. Courtesy of T. Scase</center></small>]]
* Cardiac thrombosis is generally of degenerative/ non-infectious cause.
* Cardiac thrombosis is generally of degenerative/ non-infectious cause.
** Endocarditis may occur, though uncommonly.
** Endocarditis may occur, though uncommonly.
*#*** Blockage leads to local ischaemic necrosis.
*#*** Blockage leads to local ischaemic necrosis.
*#* If the lesion is on the right side of the heart, there is pulmonary dissemination.
*#* If the lesion is on the right side of the heart, there is pulmonary dissemination.
[[Image:thrombosis dog nose 2.jpg|right|thumb|200px|<small><center>'''Nasal thrombosis (dog)'''. Courtesy of T. Scase</center></small>]]
====Atrial Thrombosis====
====Atrial Thrombosis====