PMC4621188_01
Head and neck computed tomography.. Notes: (A) Sagittal image showing intracranial dural lesion of size 2.6 cm x 2.3 cm at the top of splenium of corpus callosum and (B) axial image showing a large left occipital bone mass of size 5.7 cm x 1.9 cm with intracranial extension, and para-sagittal dural-based lesion was thought to be a meningioma.
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Another intracranial dural-based lesion of size 2.6 cm x 2.3 cm was also found at the top of the splenium of corpus callosum (Figure 1A and B).
Magnetic resonance imaging (T2-weighted axial image) showing diffuse dural mass and another large lesion in the left occipitoparietal bone with intracranial extradural, intraosseous, and subgaleal soft tissue components.
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Magnetic resonance imaging (Figure 2) and CT-positron emission tomography confirmed the findings of CT imaging.
Histopathology of para-sagittal dural lesion showing follicular pattern with numerous colloid-filled follicles with characteristic nuclear features of papillary carcinoma (enlarged and elongated nuclei and nuclear grooves).
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Histopathology of the dural lesion revealed follicular pattern with numerous colloid-filled follicles with characteristic nuclear features of papillary carcinoma (enlarged and elongated nuclei and nuclear grooves), and immunopositivity for thyroid transcription factor-1 and cytokeratin 19 confirmed the diagnosis of metastatic follicular variant PTC (Figure 3).