Fibroadenomas are benign breast tumors and are not related to breast cancer in any way.
Since you already had a biopsy that resulted in benign findings, there would be no need to remove the lump, because in many cases fibroadenomas could go away on their own within a few years. There are some reports stating that low fat, high fiber diets, limiting caffeine intake (coffee, chocolate, colas) could decrease incidence of fibroadenomas.
Usually these benign lumps are left alone but conservative management with regular follow ups is advisable. However surgical removal is sometimes necessary if they enlarge too much or cause considerable pain.
I think it’s a good idea to see a Breast Specialist as your Doctor suggested. A second opinion is always helpful to reassure you so you can have peace of mind.
The Surgeon won't necessarily tell you that the Fibroadenoma has to be surgically removed. You are primarily seeing a Specialist for a second opinion and you should ask him/her everything you have asked here concerning the Fibroadenoma.The Doctor will examining you and review your complete medical record and consequently will let you know what needs to be done in your particular situation.