The area circled is not missing bone, but an area with low opacity as seen on normal x-rays.
The degree of darkness in that area varies with image processing and media resolution. Some samples show the area more opaque.
"Fireball in JFK's head". Good one.
LOL. So you think the bright spot on JFK's right temple was reflected light off of brain matter? Doesn't there need to be a hole in his head for that? A perfectly circular one at that, just like a blow out. Regardless, doesn't that mean there was a hole at his right temple as I indicated on his x-ray?
Just look at the damage to the right side of JFK's head and tell me there were no blow outs there.
Sorry, but that was a frangible bullet that blew up in JFK's head. Funny how the autopsy photos stayed away from the right side view of JFK's head, otherwise, your graphics of x-ray shadows at the temple area is duly noted but irrelevant. Maybe you should have thought this one thru a little more before posting. Try some logic next time.