That's the size of the tumor squatting in my skull, not even paying rent for that prime real estate.
On the good side, it's not cancer. Rather, a benign pituitary outgrowth.
On the other side, brain tumor!
If you're curious, or otherwise bored, this page on UCLA's website presents the basic info pretty well.
As it mentions, if the tumor is big enough, it can affect the optic chiasm, where the optic nerves cross, causing vision issues. That's what is going on in my case, it's like I'm looking through a shadow on my left eye, which equates to needing to get it scraped out of my skull sooner rather than later.
It's also a possible reason why I've been suffering some nasty headaches these past two years. Unfortunately, the surgeon dude suggested those were more migrainous in nature, and couldn't guarantee that removal would put an end to those beastly headaches. I'm hoping, anyway.
Sadly, the pituitary,though it's referred to as the Master Gland, isn't really involved in weight loss/gain. As the endocrinologist quipped, that's controlled more by the salivary glands.
So no magic bullet there. Guess I'll just have to get back at it, after a brief respite where I'm
not allowed to lift more than 5 pounds or do anything but walk.