Papillary Thyroid Carcinoma as a Lateral Neck Cyst: A Cystic Metastatic Node versus an Ectopic Thyroid Tissue.

Papillary thyroid carcinoma is the most common thyroid malignancy and frequently metastasizes to regional lymph nodes. Occasionally, metastatic lymph nodes are palpable without the evidence of primary tumour. Papillary thyroid carcinoma of lateral neck cyst is a rare condition.