Twice normal size: A normal thyroid can be up to 4-5 CM (2") from top to bottom, about 5-6 CM (2") across, and about 2 CM (less than 1") from front to back. The normal weight is 10-20 grams (about 1/2 ounce). While some goiters can be 10x this size or even larger, most goiters are much smaller than this, or about twice the size of a normal thyroid gland.
Answered 1/15/2015
6.3k views
There is no average: Goiters are different in every patient.
Answered 4/7/2013
5.2k views
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