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Four oval-shaped well-defined hypoechoic soft tissue lesions are noted at the posterior aspect of both thyroid lobes. The upper ones are posterior to the mid-zone of each thyroid lobe and the inferior ones are related to the inferior pole of the thyroid gland (the larger). Each upper one shows peripheral well-defined cystic lesion with turbid fluid and a uniform calcified wall. All the lesions are extracapsular to the thyroid gland which looks normal.