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Histological findings at the boundary of craniopharyngiomas

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Abstract

Although a craniopharyngioma is grossly well circumscribed, microscopically the borders are frequently irregular and may be associated with gliosis in the adjacent brain tissue. In the current study, we investigated the histology of the interface between craniopharyngiomas and surrounding normal structures such as the hypothalamus and pituitary gland. Histologically, we classified the findings at the boundary of craniopharyngiomas into three types. In type 1, a relatively thick capsule-like tissue was identified at the boundary between the craniopharyngioma and surrounding normal structure composed of tumor cells and inflammatory changes. In type 2, a craniopharyngioma had a relatively clear cleavage between the surrounding gliosis. In type 3, the boundary had some interdigitation of the tumor in the surrounding gliotic layer adjacent to the craniopharyngioma. In types 1 and 3, surgeons may fail to accomplish complete resection of the tumor. These histological features may result in recurrence of craniopharyngioma even after gross total resection.

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Authors and Affiliations

  1. Department of Neurosurgery, Neurological Institute, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan

    Takakazu Kawamata, Osami Kubo & Tomokatsu Hori

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  1. Takakazu Kawamata
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  2. Osami Kubo
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  3. Tomokatsu Hori
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Correspondence to Takakazu Kawamata.

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Kawamata, T., Kubo, O. & Hori, T. Histological findings at the boundary of craniopharyngiomas. Brain Tumor Pathol 22, 75–78 (2005). https://doi.org/10.1007/s10014-005-0191-4

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  • DOI: https://doi.org/10.1007/s10014-005-0191-4

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