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. | ||
| + | ===[[LUT Vascular - Pathology#Haemorrhages|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. | ||
| + | ===[[LUT Vascular - Pathology#Haemorrhages|Bovine enzootic haematuria]]=== | ||
Revision as of 21:13, 13 August 2008
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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.