Jeebus said:
He’s a Kaleesh that was transformed into a cyborg. Pretty much the only parts that remain of his original body are his eyes, brain, and the rest of his organs.
OK. Basically another Vader with more stuff damaged/replaced. Since the lung obviously doesn’t work properly either, I would have replaced that as well.
If the lung itself is the force bearer that might be the reason to keep it.
Silly, but… well.