In the United States, bladder cancers usually start from the cells lining the bladder (called transitional cells).
These tumors are classified based on the way they grow:
Papillary tumors have a wart-like appearance and are attached to a stalk. Nonpapillary (sessile) tumors are much less common. However, they are more invasive and have a worse outcome.
What causes Transitional cell carcinoma?
In the United States, bladder cancers usually start from the cells lining the bladder (called transitional cells).
These tumors are classified based on the way they grow:
Papillary tumors have a wart-like appearance and are attached to a stalk. Nonpapillary (sessile) tumors are much less common. However, they are more invasive and have a worse outcome.