The ' means feet. One foot is 12 inches. Multiply 5*12 = 60 inches. The  means inches so 5'6 means 5 feet plus 6 inches, so do that, 60 + 6 = 66 inches.
Thyroiditis is an inflammation of the thyroid gland. It may be painful and tender when caused by an infection or trauma, or painless when caused by an autoimmune condition or medications. There are several types of thyroiditis. The most common forms are:
In addition, certain inherited conditions or a family history of the disease have been linked to thyroid cancer. A thyroid condition known as Hashimoto's thyroiditis is associated with an increased risk for thyroid cancer. This autoimmune disease is also the most common cause of hypothyroidism. With Hashimoto's, the immune system makes antibodies that damage the thyroid and interfere with its ability to release thyroid hormone.