Craniopharyngiomas. A clinical and pathological review

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Abstract
Two hundred and forty-five cases of craniopharyngiomas were obtained from the files of the AFIP and reviewed statistically with reference to their gross and microscopic appearance and clinical data. The majority of the tumors were cystic and microscopically, cysts were formed by squamous epithelial maturation, by degeneration of the stellate cells at the centers of adamantinomatous nests, or by degeneration of the stroma. Transitional forms were seen between adamantinomatous and squamous epithelium and keratohyaline granules and keratin were present in some cases. Because of this overlap, differentiation between craniopharyngiomas and suprasellar epidermoid cysts often is not possible. Significantly increased acturial survival rates were associated with absence of calcification in plain skull films in adults, negative CSF examination, and tumor size under 3.0 cm.