Clinical Case 5.8

A 27-year-old woman was seen in the clinic complaining of a lump in her neck that had increased in size over the previous year. She was clinically and biochemically euthyroid and the lump had not caused any problems from its size or position. Her serum calcium was normal. She had been adopted and no family history of thyroid disease was available. There were no abnormal findings on examination apart from a 1 × 2 cm mass in the left lobe of the thyroid gland.