I, along with most physicians, are of the school of thought that growing soft tissue masses should be excised. Telling you to leave it alone is akin to not advising a patient to not stop smoking.  By waiting until this mass became 8 cms. you have already turned a ten minute, in office procedure into an outpatient process. Why wait longer? The earlier you go in the smaller the scar and the simpler the procedure. Are there any advantages to temporizing. I think not.