or "hot" depending on their level of function.
If hot
it may result in thyrotoxicosis (Toxic adenoma)
DD of thyroid nodule:
1) The only palpable nodule in a multinodular goitre.
2) Benign Thyroid adenoma.
3) Thyroid cancer.
MANAGEMENT OF THYROID NODULE:
Is it hot or cold? Technitium 99 scan:
If hot it is unlikey to be malignant.
If cold: Is it solid or cystic? Ultrasound
If cystic - aspiration biopsy & cytology
If solid - fine needle biopsy
If positive for malignancy - Total Thyroidectomy"