Cancer of the urinary bladder?

Looking up Mom's symptoms comes up with this:

http://www.water-retention.info/types-edema/fluid-retention-lower-legs-peripheral-edema

Cancer of the urinary bladder

Cancer of the urinary bladder is often associated with occupational exposure to chemical substances, smoking tobacco, infections and small pelvis irradiation because of tumors in that area. Symptoms of cancer of the urinary bladder include haematuria (blood in the urine), pain, bladder tenesmus, burning sensation during urination and sometimes temporary retention of urine. The pain in pelvis and around groin as well as fluid retention in legs usually accompanies further symptoms of the disease.

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