PMC4754588_01
Radiological findings. A : T1-weighted axial MRI reveals a hypointense regular-shaped cystic lesion at the ventricular border. B : Contrast-enhanced T1-weighted coronal MRI reveals that the lesion compresses the optic chiasma and elevates the third ventricle and identifies the contrast-enhanced solid hyperintense nodule at the right floor of the lesion, just above the suprasellar internal carotid artery. C : Hyperintense cystic lesion on T2-weighted axial MRI. D : Tumoral invasion of the planum sphenoidale, whole sellar area, and suprasellar cistern.
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F1
T2-weighted images, the lesion was hyperintense, also compatible with a cystic lesion. The suprasellar cistern was filled and the optic chiasm and third ventricle were elevated by the lesion (Fig. 1).
Histology reveals the tumor's papillary structure with one or more layers of columnar epithelial cells around a fibrovascular core (H&E, x40).
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F2
On the basal right side of the lesion, a yellowish vascular nodule adjacent to the suprasellar internal carotid artery was revealed (Fig. 2) and completely excised while preserving the internal carotid artery.
Micrograph of immunostained section shows positive expression of pancytokeratin (x10).
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F3
The tumor was thus diagnosed as CPP (Fig. 3, 4).
T1-weighted contrast enhanced axial (A) and T2-weighted sagittal (B) postoperative MRI show total excision of the tumor.
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F4
The tumor was thus diagnosed as CPP (Fig. 3, 4).
Intraoperative image. A : The cystic component of the tumor (white arrow). B : Yellowish tumoral nodule (white arrow) after opening the cystic component.
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F5
Postoperative MRI showed total excision of the tumor (Fig. 5).