[Is there any bimodality of the age distribution of male mammary cancer (author's transl)?].
The authors study the pattern of the curve concerning breast cancer incidence in males as a function of age. The demonstration is made that such a curve is bimodal and, more precisely, could be satisfactorily considered as being made up of the juxtaposition of two normal distribution curves. The interval thus individualized between the mean age of both groups is remarkably steady between 17 and 20 yrs. The phenomenon is not blurred by regrouping the data and the patients population could be divided into two subgroups: one with a mean age of 147 yrs, with a standard deviation of 9 yrs, and bearing on 246 patients, the other one including 1.100 patients averaging 66.5 yrs old with a standard deviation of 9.9 yrs.
Adolescent↗