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June 30, 1906


JAMA. 1906;XLVI(26):2002-2003. doi:10.1001/jama.1906.02510530022008

Primary tumors of the urinary bladder are relatively rare. Their period of greatest prevalence is between 60 and 70. Men are the victims far more commonly than women. As with new growths in other situations, no special cause has been definitely established, although the predisposing cause is considered generally to consist in some form of irritation. For the purpose of eliciting certain clinical data and of investigating the pathologic anatomy of the simple epithelial tumors of the bladder, also known as papillomata, Dr. Lincoln Davis1 undertook an analysis of 41 cases observed at the Massachusetts General Hospital during a period of 28 years. In 37 of these the tumor was removed at operation and in 4 it was obtained at autopsy. As the result of clinical and histologic study of these specimens he reaches the conclusion that stone in the bladder is not an etiologic factor of importance in

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