While looking for something else, I found this great public domain image to synthesize. I cleaned it up and I present it here. I hope the guy survives his operation! (This scene reminds me of that American TV show MASH for some reason)
This is a completely free image Doctor's Operate that you can download, post, and use for any purpose.
Image License: CC0 No Rights Reserved
You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission, and at no cost. This image is completely free.