Ten-Year Follow-Up of Collision Tumors Composed of Craniopharyngioma and Pituitary Adenoma: A Case Report and Literature Review

Figure 2

Intraoperative view showing the calcified cyst wall between the left internal carotid artery (▲) and left optic nerve () (a). The cyst contents were a motor-oil-like fluid, which indicated a typical craniopharyngioma (b). Postoperative MRI showing reduction of the suprasellar cyst and recovery of the midline structure (c). Photomicrograph of the pathological specimen at the first operation showing features of craniopharyngioma (hematoxylin-eosin staining, magnification ratio 100-fold) (d). The presence of sheets of squamous epithelial cells, calcification (†), and brightly eosinophilic cytoplasm, termed wet keratin (‡), indicates an adamantinomatous type of craniopharyngioma.

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