There are many indicators for diagnosing thyroid cancer, and one of the more important is the aspect ratio, which is greater than 1. In layman’s terms, a nodule that is “long” vertically is more likely to be malignant, while a nodule that is less than one is “long” horizontally is more likely to be benign.
For those with an aspect ratio greater than 1, don’t get too anxious, it’s best to get evaluated by a specialist at a regular hospital.