IMR Press / JIN / Volume 20 / Issue 4 / DOI: 10.31083/j.jin2004105
Open Access Case Report
Magnetic resonance imaging of pilocytic astrocytomas in adults with histopathologic correlation: a report of six consecutive cases
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1 Department of Neuroradiology, Neurocenter of Southern Switzerland, 6903 Lugano, Switzerland
2 Cantonal Institute of Pathology, 6601 Locarno, Switzerland
3 Faculty of Biomedical Sciences, Università della Svizzera Italiana, 6900 Lugano, Switzerland
*Correspondence: (Emanuele Pravatà)
J. Integr. Neurosci. 2021, 20(4), 1039–1046;
Submitted: 24 March 2021 | Revised: 13 April 2021 | Accepted: 10 May 2021 | Published: 30 December 2021
Copyright: © 2021 The Author(s). Published by IMR Press.
This is an open access article under the CC BY 4.0 license (

Pilocytic astrocytoma is a WHO grade I tumor usually diagnosed in pediatric patients, and rarely encountered in the adult population. Therefore, available information about the magnetic resonance imaging characteristics of adult pilocytic astrocytoma is scarce. We report on the MRI features and corresponding histopathologic findings of six consecutive aPA cases diagnosed. The tumors were encountered in both infra- and supratentorial compartments, and their MRI characteristics were quite heterogeneous. Features included the typical solid-cystic appearance located in the cerebellum as well as the relatively unusual multifocal and/or hemorrhagic features located intra-ventricularly. The aPA MRI characteristics are remarkably variable, and might mimic those of higher grade tumors in adult patients.

Pilocytic astrocytoma
Brain tumor
Fig. 1.
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