The thyroid gland size in normal persons found on ultrasound correlates with the person's body weight and age. Differences between men and women can be explained solely by the difference body weight.
thyroid volume in mL =
= 1.97 + (0.21 * (body weight in kilograms)) + (0.06 * (age in years))
= 2.772 + (0.158 * (body weight in kilograms)) + (0.042 * (age in years))
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Specialty: Endocrinology, Clinical Laboratory