I am considering a neck lift. Should I remove the large gland in my neck?

Thank you for your question.

If the submandibular glands are noticeable before surgery, they are likely to become more visible after surgery.

The very reason they have come under scrutiny for cosmetic intervention is because of their tendency to disrupt the landmarks of the neck and jawline.

Suspension of the glands is not usually successful. There have been attempts to reduce them using botulinum toxin treatments but with no established tack record of success.

There are many ways to handle the "large glands" in the neck. Some people remove them/partially remove them, and sometimes you can tuck them up. I would completely rely on what your surgreon says because they are probably guiding you best based on what s/he has seen. However, you could always consider a 2nd opinion with another surgeon.

Without pictures, it's a little difficult to give specific recommendations. Most commonly, we would be talking about the submandibular glands (SMGs)- located along the mandible. I have to assume you aren't talking about a large thyroid (goiter).

Assuming SMGs:
That region can have fullness from: fat, SMGs that are large or ptotic, and/or prominent anterior digastric muscles. Some, or all, of these may need to be addressed for an optimal profile.
These structures should be able to be determined as a factor in your neck aesthetic concerns.
If they are, then seek a surgeon adept at managing such situations or else I fear you'll be unhappy with the results even if everything else is "perfect."