<prompt> The most common presentation of endemic goiter?Diffuse goiteSolitary noduleHypothyroidHyperthyroid  <response>: Ans. a Diffuse goiterRef: Bailey and Love Principles and Practice of Surgery, 26th edition, Page 748 Most common presentation of endemic goiter is diffuse goiter. Such diffuse goiter is seen in pregnancy and puberty. Other presentations include multinodular goiter, diffuse toxic goiter and nodule. Most important factor causing goiter is iodine deficiency Normal Iodine needed per day 0.1-0.15mg Goitrogens are the vegetables of the brassica family: Cabbage, Kale and Rape 