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Management of bilateral central compartment lymph nodes. A) The lower boundary of Level VIa (right side) was dissected and freed from the muscle, and the thymus was preserved. B) Dissection was continued along the carotid artery, and the external and lower boundary of the left Level VI was dissected. Note: TG-R, right thyroid gland; IPTG-R, right inferior parathyroid gland; STM, sternothyroid muscle; TG-L, left thyroid gland; CA, carotid artery. White lines represent cutting lines.
