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MESORECTUM
M. Ng, et al. (AGITG) Int J Radiation Oncol Biol Phys, 2012
Posterior =The presacral space
Anterior =For males, the penile bulb and prostate in the lower pelvis, and by
the posterior edge of the seminal vesicles (SV) and bladder in the mid pelvis.
In females, the boundary is formed by the bladder, vagina, cervix, and uterus.