Neoplastic Cystic Lesions, Types, Theory Regarding Formation, and Treatment

  • Tadanori Tomita
  • Karin S. Bierbrauer
Part of the Principles of Pediatric Neurosurgery book series (PRINCPEDIATR)


Cyst formation in brain tumors is not uncommon. Associated pathological features in brain tumors are readily disclosed by advanced neuroimaging studies such as computed tomography (CT) and magnetic resonance imaging (MRI). Direct visualizations of these pathological conditions were not possible by angiography or pneumoencephalography, which provided only indirect images shown by displaced cerebral blood vessels or cerebrospinal fluid (CSF) spaces. Predicting the histological nature of the intracranial mass may be possible when it is accompanied by a cyst. Intravenous contrast agents for CT or MRI provide further information as to whether or not the cyst wall consists of neoplastic cells. Although the term cystic tumor is commonly used in clinical practice, it would be more appropriate to classify these lesions into two groups: one, mural tumor with cyst, and another, cyst within tumor. The former does not contain neoplastic cells in the cyst wall, whereas the cyst wall of the latter is composed of neoplastic cells. On neuroimaging, contrast-enhancing cyst walls have neoplastic cells; therefore, this observation is important in planning resection of these tumors (Figures 15.1 and 15.2).


Germ Cell Tumor Cyst Formation Cyst Wall Primitive Neuroectodermal Tumor Mural Nodule 
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© Springer Science+Business Media New York 1993

Authors and Affiliations

  • Tadanori Tomita
  • Karin S. Bierbrauer

There are no affiliations available

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