"Significantly," states a letter directed this month to the World Health Organization, "the incidence of bladder cancer appears to be increasing...."
The letter stems from a symposium on cancer of the urinary bladder, held in Miami during the Fifth Inter-American Conference on Toxicology and Occupational Medicine.
The apparent increase in bladder cancer seems to be "particularly in certain European, African, and American countries," the letter says, continuing:"It is recognized that more than 99% of the instances of malignant bladder tumors are of unknown etiology."The letter, which bears about 90 signatures, urges WHO to "take forceful steps to form a cooperating group, international in scope, of medical scientists and practitioners, willing to devote their talents and energies toward the solution of this vital problem."One of the biggest problems in bladder carcinoma, George R. Prout, Jr., MD, the symposium's opening speaker, pointed out, is in identifying "that