Difference between revisions of "Muscles Inflammatory - Pathology"

Revision as of 19:04, 3 March 2011

In Golden retrievers
Very rare
Clinical signs:
- Acute bilateral exophthalmos
Involves only extraocular muscles except for retractor blbi
Grossly:
- Swollen and pale extraocular muscles
Histologically:
- Sterile myositis
- Multifocal necrosis of myofibres
- Lymphocytic, histiocytic and plasmacytic infiltrate with few neutrophils

Unknown aetiology
Major cell involved is eosinphil
Usually noticed at slaughter - green muscle discoloration
May be caused by degenteration of Sarcocystis spp.
Grossly:
- Green discolored areas, well demarcated
- Mostly in muscles of back and thighs
Histologically:
- Massive eosinophil infiltration
- Muscle fibres may degenerate
- In old lesions - endimysial fibrosis, myofibre atrophy, some regeneration, lymphocytes, plasma cells, macrophages and few eosinophils
- Capsule may form

@@ Line 1: / Line 1: @@
-#redirect[[:Category:Muscles - Inflammatory Pathology]]
+==Myositis==
+[[Bacterial Myositis]]
+===[[Viral Myositis]]===
+===[[Parasitic Myositis]]===
+===[[Immune-Mediated Myositis]]===
+===[[Idiopathic Myositis]]===
+====[[Canine Polymyositis]]====
+====Canine bilateral extraocular polymyositis====
+*In Golden retrievers
+*Very rare
+*Clinical signs:
+**Acute bilateral exophthalmos
+*Involves only extraocular muscles except for retractor blbi
+*Grossly:
+**Swollen and pale extraocular muscles
+*Histologically:
+**Sterile myositis
+**Multifocal necrosis of myofibres
+**Lymphocytic, histiocytic and plasmacytic infiltrate with few [[Neutrophils|neutrophils]]
+[[Category:Muscles - Inflammatory Pathology]]
+====Bovine and ovine eosinophilic myositis====
+*Unknown aetiology
+*Major cell involved is eosinphil
+*Usually noticed at slaughter - green muscle discoloration
+*May be caused by degenteration of [[Sarcocystis|''Sarcocystis'' spp.]]
+*Grossly:
+**Green discolored areas, well demarcated
+**Mostly in muscles of back and thighs
+*Histologically:
+**Massive eosinophil infiltration
+**Muscle fibres may degenerate
+**In old lesions - endimysial fibrosis, myofibre atrophy, some regeneration, lymphocytes, plasma cells, macrophages and few eosinophils
+**Capsule may form
+[[Category:Muscles - Inflammatory Pathology]]
+[[Category:Muscles - Inflammatory Pathology]]