Our expert says:
A cyst on the thyroid gland needs to be examined by an ENT surgeon or general surgeon with experience in Head and Neck surgery. If this is indeed a cyst of the thyroid, it may need removal with of the affected side of the thyroid gland (thyroid lobectomy). The nerve they may be referring to is the recurrent laryngeal nerve, that allows the vocal cords to move. Damage to the nerve may cause permanent hoarseness. There is no such nerve as the jugular nerve, but the internal jugular vein does run down the side of the neck. This structure is usually avoided during thyroid surgery, so I suspect they are referring to the abovementioned nerve.
Generally speaking a single lesion/cyst/lump in the thyroid gland should be viewed with suspicion, as it may be sinister in nature. Please get the opinion of an experienced surgeon, as it is quite possible to remove the affected part of the gland without damage to the nerve. This of course relies on the opinion of the surgeon regarding the nature of the cyst.
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