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Bladder cancer is a malignant tumor originating from the bladder mucosal epithelium and is the most common malignant tumor of the urinary system. Histologically, it includes urothelial carcinoma, squamous cell carcinoma, adenocarcinoma, and other types, of which urothelial carcinoma accounts for >90%.
1. Urothelial carcinoma
The most common type (>90%), arising from transitional epithelial cells of the bladder mucosa.
2. Squamous cell carcinoma
Relatively uncommon, often associated with long-standing chronic infection or irritation from stones, and typically has a poorer prognosis.
3. Adenocarcinoma
Rare, potentially arising from urachal remnants, and treatment strategies differ from other types.
4. Classification by depth of invasion
Classified as non–muscle-invasive and muscle-invasive disease, which determines treatment strategy and prognosis.
5. Classification by growth pattern
Includes papillary, nodular-infiltrative, and mixed types, influencing surgical approach selection.
6. Classification by degree of differentiation
Classified as well-, moderately, or poorly differentiated; poorly differentiated tumors have the highest malignancy.
1. Smoking
The most important risk factor; smokers have a 2–4-fold higher risk than nonsmokers.
2. Occupational exposure
Long-term exposure to aromatic amines, particularly among workers in dye, rubber, and leather industries.
3. Chronic infection and inflammation
Chronic irritation such as long-term indwelling catheters and schistosomiasis increases malignant transformation risk.
4. Age
Incidence increases with age, with most patients diagnosed after 65 years.
5. Sex differences
Incidence is markedly higher in men than in women (approximately 3–4-fold).
6. Genetic factors
A family history of bladder cancer increases risk, associated with genetic susceptibility.
7. Medication-related factors
Long-term use of chemotherapy agents such as cyclophosphamide may increase bladder cancer risk.
8. Drinking water source
Long-term consumption of arsenic-contaminated water may increase risk, especially in high-arsenic regions.
1. Smoking cessation and alcohol limitation
Complete smoking cessation is the most effective measure; limit alcohol intake and maintain a healthy lifestyle.
2. Occupational protection
Workers exposed to chemicals should use appropriate protection and undergo regular occupational health examinations for early detection.
3. Adequate hydration
Maintain sufficient daily fluid intake to dilute urinary carcinogens and reduce mucosal contact time.
4. Healthy diet
Increase intake of fresh fruits and vegetables, reduce fried and pickled foods, control body weight, and maintain balanced nutrition.
5. Regular health examinations
High-risk populations should undergo periodic urinalysis and urinary tract ultrasonography, and seek prompt medical evaluation when symptoms occur.
Jinshazhou Hospital of Guangzhou University of Chinese Medicine emphasizes that bladder cancer incidence is rising. Early symptoms are often subtle and easily overlooked, and many patients are diagnosed at intermediate-to-advanced stages, adversely affecting outcomes. Vigilance for painless hematuria is essential. High-risk individuals should undergo regular screening and seek timely care. Early diagnosis and standardized treatment are key, and MDT-based individualized strategies can substantially improve outcomes.
Bladder cancer is a malignant tumor originating from the bladder mucosal epithelium and is the most common malignant tumor of the urinary system. Histologically, it includes urothelial carcinoma, squamous cell carcinoma, adenocarcinoma, and other types, of which urothelial carcinoma accounts for >90%.
1. Urothelial carcinoma
The most common type (>90%), arising from transitional epithelial cells of the bladder mucosa.
2. Squamous cell carcinoma
Relatively uncommon, often associated with long-standing chronic infection or irritation from stones, and typically has a poorer prognosis.
3. Adenocarcinoma
Rare, potentially arising from urachal remnants, and treatment strategies differ from other types.
4. Classification by depth of invasion
Classified as non–muscle-invasive and muscle-invasive disease, which determines treatment strategy and prognosis.
5. Classification by growth pattern
Includes papillary, nodular-infiltrative, and mixed types, influencing surgical approach selection.
6. Classification by degree of differentiation
Classified as well-, moderately, or poorly differentiated; poorly differentiated tumors have the highest malignancy.
1. Smoking
The most important risk factor; smokers have a 2–4-fold higher risk than nonsmokers.
2. Occupational exposure
Long-term exposure to aromatic amines, particularly among workers in dye, rubber, and leather industries.
3. Chronic infection and inflammation
Chronic irritation such as long-term indwelling catheters and schistosomiasis increases malignant transformation risk.
4. Age
Incidence increases with age, with most patients diagnosed after 65 years.
5. Sex differences
Incidence is markedly higher in men than in women (approximately 3–4-fold).
6. Genetic factors
A family history of bladder cancer increases risk, associated with genetic susceptibility.
7. Medication-related factors
Long-term use of chemotherapy agents such as cyclophosphamide may increase bladder cancer risk.
8. Drinking water source
Long-term consumption of arsenic-contaminated water may increase risk, especially in high-arsenic regions.
1. Smoking cessation and alcohol limitation
Complete smoking cessation is the most effective measure; limit alcohol intake and maintain a healthy lifestyle.
2. Occupational protection
Workers exposed to chemicals should use appropriate protection and undergo regular occupational health examinations for early detection.
3. Adequate hydration
Maintain sufficient daily fluid intake to dilute urinary carcinogens and reduce mucosal contact time.
4. Healthy diet
Increase intake of fresh fruits and vegetables, reduce fried and pickled foods, control body weight, and maintain balanced nutrition.
5. Regular health examinations
High-risk populations should undergo periodic urinalysis and urinary tract ultrasonography, and seek prompt medical evaluation when symptoms occur.
Jinshazhou Hospital of Guangzhou University of Chinese Medicine emphasizes that bladder cancer incidence is rising. Early symptoms are often subtle and easily overlooked, and many patients are diagnosed at intermediate-to-advanced stages, adversely affecting outcomes. Vigilance for painless hematuria is essential. High-risk individuals should undergo regular screening and seek timely care. Early diagnosis and standardized treatment are key, and MDT-based individualized strategies can substantially improve outcomes.