To keep the ball rolling, here's my take on another scenario that's bounced about the collective imaginations of the community.
The patient agreed to this. Why she did is up for debate. Some say it was patriotism, some say it was to better mankind, some to save her family and some say she was simply taken in the night and thrown into one of those black vans that people who are on the right side of the law don't fear. It's irrelevant what actually happened. All that matters is that the paperwork is in order and no one can doubt the importance of this work. The patient has her body surgically prepared, specifically her womb, for the embryo to be placed inside of her. This is the drawing of a new age, the begging of humanities ascent into the stars. After she has recovered and the embryo implanted she is monitored carefully, examined often by the Doctor and his medical team. Everything she does is watched, analyzed, and calculated. For the period of incubation her life is no longer her own. She is now subservient to the alien in her womb, its life is of utmost importance.
The mercy, it gestates quicker than a human. The rub, its a fair bit larger than a human child. The medical team knows a vaginal birth was always going to be difficult given the size but they hoped it could be done. Unfortunately, it seems unlikely especially because it has so far proved impossible to suppress the alien's natural instincts. It's very evident now that its eating its way out of the patient. After quick meeting with the board it is deemed that far too many resources have been put into both patient and embryo to let either be destroyed. A plan is put together and enacted. The alien must be born via cesarean section. The patient, now in terrible pain and strapped to a gurney for her own and the child's safety, is wheeled to the OR where she is transferred over to the operating table. She begs and pleads with the medical staff, “Get it out, get it out!” She is sedated, heavily, to try to ensure the alien child is rendered unconscious as well. The lights blare down on her naked form as engorged belly is prepared for the operation. She is opened up and the child secured but the damage to her womb is significant, it takes a while to repair. Finally the incision is closed and she is wheeled to recovery. A success in a fashion. The order from the board comes down, try again…..