Kallmann syndrome is associated with which of the following findings?

Kallmann syndrome is a condition characterized by the combination of hypogonadotropic hypogonadism and anosmia or hyposmia. The hallmark findings in individuals with this syndrome often include primary amenorrhea in females, as they have not developed secondary sexual characteristics due to low levels of sex hormones caused by insufficient stimulation from gonadotropins. Anosmia, or the loss of the sense of smell, is another defining feature of Kallmann syndrome, resulting from the failure of olfactory nerve development.

The absence of the sense of smell is due to a defect in the migration of certain neurons during embryonic development which affects both the hypothalamus and the olfactory bulbs. Because of this dual deficiency, individuals with Kallmann syndrome face challenges in both reproductive capabilities and olfactory function, making primary amenorrhea and anosmia the classical findings associated with this syndrome.

In this context, the correct answer emphasizes the presence of primary amenorrhea, indicating an absence of menstruation for the expected age, alongside anosmia, which highlights the distinct clinical picture presented by Kallmann syndrome.