An abscess occurs when an area of tissue becomes infected and the body's immune system tries to fight it. Most likely your ferret had a wound that became infected.
Abscess following microbial infection does not cause cancer.
The swelling of the lymph node glands in a ferret may caused by several illnesses possibly caused from an infection or cancer. A verternarian will have to diagnose your ferret for treatment
I would advise against it. If the peat moss (or other plant materials) are eaten it can easily cause an intestinal blockage. Instead I would get a ferret harness and leash and take it outside instead, I think this would be more fun for the ferret.
Ferrets can get quite comfortable in their habitats and a change could cause stress. Depends on the individual ferret. Some are more adaptable than others
If your male ferret has not been altered and is in season, if you would like to breed him, then he would need a Jill ferret.
The ferret might chew on the tape and cause stomach problems
How much does the ferret weigh.
Unlikely, unless maybe the abscess enters the brain. But more general problems would be expected then.
save save
penis
Could be an internal parasite which feeds on the food the ferret ingests, hence the ferret doesn't get enough nutrition. Could be other diseases which cause improper absorption of nutrients or ones which cause high metabolism. You should take your ferret to the vets where they can test for various ailments that might be causing the ferret to be underweight.
i highly doubt it. It may scare the ferret but there is no possible way it can literally kill it.