In total 95 percent of primary bladder cancer originate in transitional epithelium; the remainder arise from connective tissue or are extraadrenal pheochromocytomas.
Bladder Cancer Overview
Secondary tumors of the bladder are commonly and most frequently arise from the sigmoid and rectum, the prostate, the uterus or the ovaries, although bronchial neoplasm may also spread to bladder. Histological types of bladder cancer include urothelial, squamous and adenocarcinoma. over 90 percent are urothelial in origin. Pure squamous carcinoma is uncommon (approximately 5%), except in areas where bilharzia is endemic.
Bladder Cancer Symptom
Painless gross hematuria is the most common symptom and is indicative of bladder carcinoma until proven otherwise. Often, however the patient fails to declare the symptoms to the GP. The bleeding may give rise to clot formation and clot retention. Constant pain in the pelvis usually heralds extravesical spread.
Now after a brief introduction what a bladder cancer it now we come to the topic, what cancer survival rate is?
Bladder cancer survival rate actually is the percentage of people with a specific stage and grade of bladder tumor which will survive the disease for a specific period of time after confirms diagnosis. This is also referred as the prognosis of the bladder cancer. Usually the survival rate is calculated in 5 years (i.e., the number of patients which will survive the cancer till five years after diagnosis).
Factors which play an important role in increasing or decreasing the bladder cancer survival rate are:
- The stage of the bladder cancer
- The grade of the bladder cancer
- The histological type of bladder cancer
- Age of the patient
- General health of the patient
- Other underlying diseases
The calculation of bladder cancer survival rates is being done through different techniques and methods. Mostly the relative survival rate is calculated in which the survival rate of tumor patients is calculated in comparison to the general population.
From 1995 -2001 the five year survival rate for bladder cancer was approximately 81.9 %. The survival rate separately for men and women was;
- 54% for African American women
- 70% for African American men
- 78.5% for Caucasian women
- 84.5% for Caucasian men
In 2007 women diagnosed with bladder cancer had comparatively lower survival rate as compared to men (48.6 percent compared to 57 %).
The bladder cancer survival rate based on the stage of the tumor is a vey important statistical figure for the overall benefits of the patients and surgeons; staging of the tumor plays an important role in defining the survival of the patients.
- Almost 70 to 80 percent of the bladder cancers are being diagnosed in a confined stage.
- Almost 15 to 20 percent of bladder cancers are diagnosed when they have already spread to regional lymph nodes or beyond the primary site.
Regular screening programs started in many countries usually after the age of 40 in both men and women has resulted in increasing the 5 year bladder cancer survival rate as the tumor is detected in much early stage and thus management is started.