Difference between revisions of "Bladder Neoplasia"
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− | + | Neoplasia of the bladder is most commmon in dogs, cats and cattle. | |
− | + | ===Benign tumours=== | |
− | + | ===Leiomyoma=== | |
− | + | *Occur in the smooth muscle of the bladder wall. | |
− | + | *May be single or multiple, well defined white nodular projections. | |
− | + | *If situated at the neck of the bladder, they can disrupt urinary flow. | |
− | + | ===Papilloma=== | |
+ | *Bladder papillomas are uncommon. | ||
+ | *Will often recur following excision. | ||
+ | *Can lead to carcinomas. | ||
+ | ===Botryoid rhabdomyosarcoma=== | ||
+ | *Occurs in the bladder and less commonly the urethra of large breed dogs less than 18 months of age. | ||
+ | *Embryonic myoblasts may be the origin. | ||
+ | *Appears as a large fungating mass, usually at the trigone of the bladder. | ||
+ | *Highly infiltrative and metastatic. | ||
+ | ===[[Bovine Enzootic Haematuria]]=== | ||
+ | ==Malignant tumours== | ||
+ | ===Transitional cell carcinoma=== | ||
+ | *Most relevant in dogs and cats. | ||
+ | *Spreads along and through the bladder wall. | ||
+ | *Destroys the epithelium and invades the muscle layers. | ||
+ | *Metastasis to regional nodes and the lungs occurs in approximately 50% of cases. | ||
+ | **Can also spread to the peritoneum or in a retrograde manner to the soft tissue and bone of the hindlimbs. | ||
+ | ===Bovine enzootic haematuria=== | ||
+ | |||
+ | |||
+ | [[Category:To Do - Urinary]] | ||
+ | |||
+ | [[Category:Lower Urinary Tract - Pathology]] |
Latest revision as of 13:38, 13 April 2011
Neoplasia of the bladder is most commmon in dogs, cats and cattle.
Benign tumours
Leiomyoma
- Occur in the smooth muscle of the bladder wall.
- May be single or multiple, well defined white nodular projections.
- If situated at the neck of the bladder, they can disrupt urinary flow.
Papilloma
- Bladder papillomas are uncommon.
- Will often recur following excision.
- Can lead to carcinomas.
Botryoid rhabdomyosarcoma
- Occurs in the bladder and less commonly the urethra of large breed dogs less than 18 months of age.
- Embryonic myoblasts may be the origin.
- Appears as a large fungating mass, usually at the trigone of the bladder.
- Highly infiltrative and metastatic.
Bovine Enzootic Haematuria
Malignant tumours
Transitional cell carcinoma
- Most relevant in dogs and cats.
- Spreads along and through the bladder wall.
- Destroys the epithelium and invades the muscle layers.
- Metastasis to regional nodes and the lungs occurs in approximately 50% of cases.
- Can also spread to the peritoneum or in a retrograde manner to the soft tissue and bone of the hindlimbs.