Thyroid tissue shows nodular hyperplasia where follicles are variable in size, full of thick colloid and lined by mature epithelium. There is focal follicular cystic change observed in the left lobe sections. Stroma shows fibrosis, interstitial hemorrhage and cholesterol crystals deposition. No evidence of hyperfunction or malignancy.
History of total thyroidectomy 10 years ago, presenting with a midline neck remnant thyroid mass at the hyoid level.
Soft tissue mass measured 4x1.5x1.2 cm, with cut section showing greyish nodule with cystic area measured 1 cm.
Mid-line neck swelling, excision: