PMC3148595_01
Thyroid ultrasonography showed a large lobulated cystic lesion in the right thyroid lobe and multiples adjacent little cysts in isthmus.
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fig1
An ultrasound study revealed a large lobulated cystic nodule in the right thyroid lobe with multiples adjacent cysts in isthmus (Figure 1).
Removed thyroid right lobe and isthmus which includes a 30 mm cystic nodule in the right thyroid lobe contained germinate membrane and daughter vesicles.
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A thick fibrous wall separated the cysts from the surrounding thyroid parenchyma (Figure 2).
Histopathologic examination of the removed thyroid and cyst. A dense hyalinized fibrous tissue and a mixed inflammatory infiltrate (including eosinophils) were present between the cyst and thyroid tissue. HEx40.
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fig3
Histopathologic examination confirmed the hydatic nature of the thyroid cyst (Figure 3).