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Bladder cancer is much more common in men than women; around 1.1% of men and 0.27% of women develop bladder cancer. [2] This makes bladder cancer the sixth most common cancer in men, and the seventeenth in women. [64] When women are diagnosed with bladder cancer, they tend to have more advanced disease and consequently a poorer prognosis. [64]
A benign tumor is a mass of cells that does not invade neighboring tissue or metastasize (spread throughout the body). Compared to malignant (cancerous) tumors, benign tumors generally have a slower growth rate. Benign tumors have relatively well differentiated cells.
Cystitis cystica can show up on a CT urogram as a number of small, rounded filling defects in the bladder wall that range in size from 2 to 5 mm. Lesions can also occasionally appear as a large, tumor-like mass.
Papillary urothelial neoplasm of low malignant potential (PUNLMP) is an exophytic (outward growing), (microscopically) nipple-shaped (or papillary) pre-malignant growth of the lining of the upper genitourinary tract (the urothelium), which includes the renal pelvis, ureters, urinary bladder and part of the urethra.
It accounts for 95% of bladder cancer cases and bladder cancer is in the top 10 most common malignancy disease in the world and is associated with approximately 200,000 deaths per year in the US. [2] [3] It is the second most common type of kidney cancer, but accounts for only five to 10 percent of all primary renal malignant tumors. [4]
Adenomas constitute approximately 10% of digestive polyps. Most polyps (approximately 90%) are small, usually less than 1 cm in diameter, and have a small potential for malignancy. The remaining 10% of adenomas are larger than 1 cm and approach a 10% chance of containing invasive cancer. [17] There are three types of adenomatous polyp: