Abstract
Primary Site. The penis is composed of three cylindrical masses of cavernous tissue bound together by fibrous tissue (Figure 40.1). Two masses are lateral and are known as the corpora cavernosa penis. The corpus spongiosum penis is a median mass and contains the greater part of the urethra. The distal expansion of the corpus spongoiusum forms the glans penis. The penis is attached to the front and the sides of the pubic arch. The skin covering the penis is thin and loosely connected with the deeper parts of the organ. This skin at the root of the penis is continuous with that over the scrotum and perineum. Distally, the skin becomes folded upon itself to form the prepuce, or foreskin. Circumcision has been associated with a decreased incidence of cancer of the penis.
(Primary urethral carcinomas and melanomas are not included)
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© 2012 American Joint Committee on Cancer
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Compton, C.C., Byrd, D.R., Garcia-Aguilar, J., Kurtzman, S.H., Olawaiye, A., Washington, M.K. (2012). Penis. In: Compton, C., Byrd, D., Garcia-Aguilar, J., Kurtzman, S., Olawaiye, A., Washington, M. (eds) AJCC Cancer Staging Atlas. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-2080-4_40
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DOI: https://doi.org/10.1007/978-1-4614-2080-4_40
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