PMC10316132_01
Magnetic resonance imaging T2-weighted image showing well-defined rounded lesion in the pituitary fossa.
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F1
Her magnetic resonance imaging (MRI) was showed well defined rounded lesion in the pituitary fossa which was isointense on T1-weighted image and hyperintense on T2-weighted images [Figure 1].
Magnetic resonance imaging T1 post contrast sagittal view showing thick peripheral enhancement.
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F2
In postcontrast sagittal image, it showed thick peripheral enhancement [Figure 2].
Tumor cells negative for S100 (a), show nuclear expression of thyroid transcription factor 1 (b), and lack glial fibrillary acidic protein staining (c).
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F3
It was glial fibrillary acidic protein (GFAP) negative and thyroid transcription factor 1 (TTF1) positive [Figure 3].
(a) x10: Hypocellular lesion composed of bundles and aggregates of spindle to epitheloid cells, set in eosinophilic background. (b) x20: High magnification showing cells with bland nuclei and eosinophilic cytoplasm. There is no significant cytological atypia or mitosis.
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F4
On pathological examination, the sample showed a hypocellular lesion, composed of ovoid to spindle cells, arranged in short bundles and sheets [Figure 4].