Inclusion Criteria:

- The patient must have given his/her informed and signed consent

- The patient must be insured or beneficiary of a health insurance plan

- The patient is available for 12 months of follow-up

- The patient is a candidate for total thyroidectomy because of a nodular pathology, a
diffuse goiter, thyroiditis, or Basedow's disease

- Patient has calcitoninemia < 9 ng/pl

- Patient has normal calcemia

- Patient has PTH level between 5 ng/l and 75 ng/l

- The subject has a normal laryngeal mobility

Exclusion Criteria:

- The patient is participating in another study

- The patient is in an exclusion period determined by a previous study

- The patient is under judicial protection, under tutorship or curatorship

- The patient refuses to sign the consent

- It is impossible to correctly inform the patient

- The patient is pregnant

- The patient is breastfeeding

- The patient is not available for 12 months of follow-up

- Subject has a preoperative diagnosis of cancer on fine needle aspiration biopsy of
the thyroid or cervical lymph node

- Lymph node metastasis strongly suspected clinically and/or sonographically

- The subject has an extension of substernal thyroid (diving goiter)

- Family history of medullary thyroid cancer

- The subject has a history of neck surgery

- Contraindication for general anesthesia