Alaska's Western Arctic Caribou herd forms aggregations or groups that can stretch for miles. The herd is on a three-year census schedule. The Department attempted a census during July 2002 but high wind, snow and fog forced a one-year delay. Weather almost prevented the 2003 attempt as well.
Finally, thyroid cancer may also be detected as a cause of an enlarged thyroid gland. It is quite clear that enlargement of the thyroid or the presence of nodules within the thyroid is common, particularly as revealed when sensitive imaging techniques such as ultrasound are used.
The most common cause of hypothyroidism is inflammation of the thyroid gland, which damages the glandâs cells. Autoimmune diseases. The most common cause of hypothyroidism in adults is autoimmune thyroiditis or Hashimotoâs disease. Atrophy of the thyroid gland. The thyroid gland shrinks in size as a result of aging.