The possibility that Adolf Hitler had only one testicle has been a fringe subject among historians and academics researching the Nazi leader. The rumour may be an urban myth, possibly originating from the contemporary British military song "Hitler Has Only Got One Ball".
Hitler's doctor Erwin Giesing and his personal physician Theodor Morell disregarded the idea of Hitler's monorchism and said there was nothing wrong with Hitler's testicles.[1] However, Hitler often refused to undress for medical exams.[2] In 1970, the Soviet Union claimed an autopsy showed Hitler was missing a testicle, but the historical accuracy of the report is disputed. In December 2015, it was reported that doctor's notes from Landsberg Prison recorded that Hitler had "right-sided cryptorchidism",[3] on evidence from an enforced medical examination Hitler underwent in 1923.[4][5]