I don't believe the aliens crap for a second, but pics are interesting.
From the Autopsy Report:
"The axillary regions on both sides showed soft spots where organs had been removed. Incisions were made on the face, internal thorax, abdomen, legs, arms, and chest. Shoulders and arms have perforations of 1 to 1.5 inches in diameter where tissue and muscles were extracted. The edges of the perforations were uniform and so was their size. The chest had shrunk due to the removal of internal organs."
The autopsy report continues, "We observed the removal of the right and left orbital areas, emptying of the mouth cavity, pharynx, oropharynx, neck, right and left armpit area, abdomen, pelvic cavity, right and left groin area".
Precise "cookie cutter" holes are discovered in strategic positions throughout the body used for extracting internal organs. This level of precision suggests that the operation was executed with speed, the application of heat or lasers, all occurring as the subject was still alive.
In this image you can clearly see the body has been hollowed out and organs removed. A cavity in the center of the abdomen reveals an extraction point.
"INTERNAL EXAMINATION: ...after opening the cranial cavity using Griessinger technique we found: 17) unimpaired skullcap; 18) cerebral edema".
In a case like this, the presence of cerebral edema without direct traumatic origin is a strong characteristic of an agonizing death. In confirmation, the autopsy CONCLUSION explicitly states as causa mortis (cause of death):
"...acute hemorrhage in multiple traumatisms. There is a component of causa mortis by vagus stimulation" (implying cardio-respiratory arrest caused by extreme pain). "The victim shows injuries with vital reaction characteristics, i.e., there is the component "torture". The suggested modus operandi is: incisions in soft parts and natural orifices using sucking devices".