Toxic nodular goiter
（重定向自Plummer syndrome）
Toxic nodular goiter (TNG) (or Plummer syndrome) is a condition that can occur when a hyper-functioning nodule develops within a longstanding goiter. This results in hyperthyroidism, without the ophthalmologic effects seen in Grave's disease. These toxic multi or uni-nodular goiters are most common in women over the age of 60.