Fairly straightforward. I'm writing a character with a regenerative ability that's prone producing cancerous tumors when healing from substantial injury. A friend suggested having some sort of biocomputer implant be introduced to manage it, but I'm not sure where in the body to put the darn thing.
Without getting into details about how the power-set works, power and noise aren't issues here, and it's expected to run autonomously for the most part. I can't find what the expected size of a working, practical biocomputer would be (best I found is one the size of a book), so I'm hand-waiving it a bit to be the size of a capsule.
Is there an area inside the body that's relatively problem free to put this at? And as a bonus, what problems can be expected from putting such biomass at one place in the body compared to another (assuming there's not an optimal location)?
Edit: Preferably somewhere besides a limb, because the removal of that limb would hamper the ability to control the regeneration of so much biomass.