G. Frank Lydston (1858-1923) revisited: androgen therapy by testicular implantation in the early twentieth century.

At the beginning of the twentieth century the transplantation or implantation of either human or animal testicular tissue was an appealing form of androgen therapy in hypogonadal and aging males. This article on the history of medicine discusses the work of the American urologist G. Frank Lydston from Chicago, who was a well-known and respected surgeon in the academic world and was involved in the early clinical trials of this procedure.