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| − | Neoplasia of the bladder is most commmon in dogs, cats and cattle.
| + | |backcolour =C1F0F6 |
| − | ===Benign tumours===
| + | |linkpage =Urinary System - Pathology |
| − | ===Leiomyoma=== | + | |linktext =Urinary System |
| − | *Occur in the smooth muscle of the bladder wall.
| + | |maplink = Urinary System (Content Map) - Pathology |
| − | *May be single or multiple, well defined white nodular projections.
| + | |pagetype =Pathology |
| − | *If situated at the neck of the bladder, they can disrupt urinary flow.
| + | }} |
| − | ===Papilloma=== | + | <br> |
| − | *Bladder papillomas are uncommon.
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| − | *Will often recur following excision.
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| − | *Can lead to carcinomas.
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| − | ===Botryoid rhabdomyosarcoma=== | |
| − | *Occurs in the bladder and less commonly the urethra of large breed dogs less than 18 months of age.
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| − | *Embryonic myoblasts may be the origin.
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| − | *Appears as a large fungating mass, usually at the trigone of the bladder.
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| − | *Highly infiltrative and metastatic.
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| − | ===[[Bovine Enzootic Haematuria]]=== | |
| − | ==Malignant tumours==
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| − | ===Transitional cell carcinoma===
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| − | *Most relevant in dogs and cats.
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| − | *Spreads along and through the bladder wall.
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| − | *Destroys the epithelium and invades the muscle layers.
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| − | *Metastasis to regional nodes and the lungs occurs in approximately 50% of cases.
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| − | **Can also spread to the peritoneum or in a retrograde manner to the soft tissue and bone of the hindlimbs.
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| − | ===Bovine enzootic haematuria===
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| − | [[Category:To Do - Urinary]]
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| − | | |
| − | [[Category:Lower Urinary Tract - Pathology]]
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