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pineoblastoma

Pronunciation: pin'e-o-blas-to'ma

Definition: A poorly differentiated tumor of the pineal gland most frequently occurring in the first 3 decades of life consisting of small cells with a scant amount of cytoplasm and often forming pseudorosettes; histologically resembles a medulloblastoma; a type of primitive neuroectodermal tumor.

[pineal + G. blastos, germ, + -oma, tumor]

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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