[Influence of sex differences in biological aggressivity of bladder urothelial tumor at first diagnosis].
BACKGROUND
To investigate whether, in the same way incidence is affected, biological aggressiveness of bladder cancer at diagnosis is greater in men than in women.


METHODS
Using data from a retrospective study on urothelial cancer of the bladder between 1975 and 1991 in La Rioja (Spain), an estimate was made of total Relative Risk, Mantel-Haenszel relative weighted risk and Greenland-Robins 95% confidence interval of suffering infiltrant bladder cancer in male versus female, assuming that the tumour affecting the muscle layer was infiltrant.


RESULTS
Total Relative Risk (1.05). Mantel-Haenszel relative weighted risk (1.08), and Greenland-Robins confidence interval (0.65-Relative Risk-1.08).


CONCLUSIONS
It is concluded that sex differences have no influence on the risk to develop infiltrant urothelial cancer of the bladder at diagnosis.
Fernández Fernández
A
A
Servicio de Urología, Complejo Hospitalario San Millán San Pedro, Logroño, La Rioja.
García Escudero
C
C
Fernández Ruiz
M
M
Domínguez Benito
P
P
Gil Fabra
J
J
Otero Mauricio
G
G
D000367:Age Factors; D005260:Female; D006801:Humans; D008297:Male; D009361:Neoplasm Invasiveness; D012189:Retrospective Studies; D017678:Sex Distribution; D001749:Urinary Bladder Neoplasms / Q000473:pathology*
Influencia de la diferencia de sexo en la agresividad biológica del tumor urotelial vesical en su primer diagnóstico.