The exhibit displays enlarged and distorted thyroid glands showing diffuse heterogenous nodularity, with variable size of nodules partly separated by incomplete fibrous septae.
The thyroid shows mutiple nodule separated by incomplete septae. The nodules are composed of varying size of thyroid follicles. They are lined by flat to cuboidal epithelium. Colloid is noted within the follicles.
Multinodular goitre
Name the trace element that is important for thyroid hormone production.