In regard to "examinations", the tools available in the medical field are unbelievable nowadays. For scopes such as colonoscopy and endoscopy, the flexible tube is about the diameter of your little finger - or less - and it can contain a camera, a light, a cauterization tool, and a "snare" tool.
Other tools, such as those used for arthroscopic knee procedures like meniscectomy have a cutting device and a suction device along with a camera.
The devices used for angiograpy - the type they insert into the femoral artery and thread up through the aorta and into the coronary arteris have a camera, a port that can be used to release a dye, and a "balloon" device used to push plaque up against the interior wall of the artery to open it up.
And so on and so on.
The cameras on these devices are excellent and the photos can be enlarged for experts to examine the interior of organs for evaluation purposes.
I cannot imagine that the Chief Medical examiner's office does not have access to some device of this sort. I would think if they wanted to photograph the interior of the skull they would have. And maybe they did, I don't know.
I think we all know this was not a "normal" autopsy, where yes indeed the skull would be removed for the pathologist to examine the brain.
I honestly don't think Dr. Spitz's finding, even if it is what he thinks it was is all that earth shattering or important to this case. Numerous, numerous people have testified during depositions that the area where the body was recovered was covered in water. Others have told us of the storms that came along with the Hurricaine. Water moves when the wind blows.
Sorry to be graphic, but the little body inside those bags likely would have bloated and could have been floating or bobbing around down there among the underbrush. It was a lucky break that it ever was found. And I believe that only happened due to Casey's laziness. I think she just pulled her car off the side of that road in a place she knew had a steep drop off and heaved that bag down over the hill.
All JMO, of course.
For your viewing pleasure, here's an interview Dr. Spitz gave BEFORE his testimony. He expounds:
http://www.clickondetroit.com/video/28239806/index.html