My nodules are on the left. One is about an inch, and the other is about 1/4 inch. I feel something there with some discomfort when I swallow. That's how mine were picked up. I had NO idea the other symptoms I have been having for two years were hypothyroid. I haven't 'technically' gotten a dx yet, but have had all the testing, just waiting for PCP and endo appt. I have had cell phone for MANY years, always talking on left. Hmmmm, interesting correlation.
My nodules that were found in 1985 and ended up being papillary thyroid cancer were both on the right side of the thyroid. That was the pre-cell phone era as well. I'm not sure there is a predominance one way or the other.