Of several classifications of patients with hermaphroditism that have been proposed to date, the most lucid and self-explanatory one is that of McCahey,1 which is as follows: group 1, male pseudohermaphrodites without müllerian derivatives; group 2, female pseudohermaphrodites; group 3, true hermaphrodites; group 4, male pseudohermaphrodites with müllerian derivatives.
I wish to report on 1 patient representing group 2 and 1 representing group 4 and at the same time call attention to certain anatomic features characteristic of each of these four groups.
MALE PSEUDOHERMAPHRODITES WITHOUT MÜLLERIAN DERIVATIVES
McCahey1 gathered 12 reported cases of male pseudohermaphrodites without müllerian derivatives, and I have been able to add 7 more which have appeared in the literature subsequently.2Patients in this group are unquestionably male; the identity of their sex is frequently confused by the presence of derivatives of the urogenital sinus rather than derivatives of the müllerian structures. The presence