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In ancient civilizations, the removal of the human penis was sometimes used to demonstrate superiority or dominance over an enemy. Armies were sometimes known to sever the penises of their enemies to count the dead, as well as for trophies. The practice of castration (removal of the testicles) sometimes involved the removal of all or part of the penis, generally with a tube inserted to keep the urethra open for urination. Castration has been used to create a class of servants or slaves called eunuchs in many different places and eras. In the modern era, removing the human penis for any such activity is very rare (with some exceptions listed below), and references to removal of the penis are almost always symbolic. Castration is less rare, and is performed as a last resort in the treatment of androgen-sensitive prostate cancer. ==Penis removal in medicine and psychology== (詳細はamputations, known as penectomies, for medical reasons. Cancer, for example, sometimes necessitates removal of all or part of the penis. In some instances, botched childhood circumcisions have also resulted in full or partial penectomies. Genital surgical procedures for trans women (transgender or transsexual women) undergoing sex reassignment surgery, do not usually involve the complete removal of the penis; part or all of the glans is usually kept and reshaped as a clitoris, and the skin of the penile shaft may also be inverted to form the vagina. When procedures such as this are not possible, other procedures such as colovaginoplasty are used which do involve the removal of the penis. Issues related to the removal of the penis appear in psychology, for example in the condition known as castration anxiety. Others, who associate the organ with rape and male dominance and aggression, may consciously or subconsciously see the organ (their own or those of others) as a weapon and express a hatred for it, potentially desiring to see it violently removed. Some men have undergone penectomies as a voluntary body modification, thus including it as part of a body dysmorphic disorder. Professional opinion is divided regarding the desire for penile amputation as a pathology, much as all other forms of treatment by amputation for body dysmorphic disorder. Voluntary subincision, removal of the glans penis, and bifurcation of the penis are related topics. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Penis removal」の詳細全文を読む スポンサード リンク
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