[Lymphadenectomy for thyroid and lymph node carcinomas].

• In general, primary surgery of thyroid carcinoma should consist of total thyroidectomy and lymph node dissection of the cervicocentral compartment. Exceptions are cases of papillary microcarcinoma and prophylactic surgery due to multiple type 2A endocrine neoplasia. Lymph node dissection beyond the cervicocentral compartment also should be compartment-oriented. It is generally indicated if lymph node metastases have been proven. Concerning clinically proven medullary thyroid carcinoma, bilateral cervicolateral lymph node dissection is generally indicated, since lymph node metastases may be missed preoperatively but are often found histologically. In patients with parathyroid carcinoma, en bloc ipsilateral cervicocentral lymph node dissection should be performed in addition to parathyroidectomy and hemithyroidectomy. Lymph node dissection should always be performed systematically, since lymph node metastases may be missed both clinically and by imaging techniques.

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