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Recurrent Neurenteric Cysts Compressing the Brainstem


Recurrent Neurenteric Cysts Compressing the Brainstem

Angela N Viaene et al. Surg Neurol Int.


Background: Neurenteric cysts, also referred to as endodermal cysts and enterogenous cysts, are rare lesions of the neuroaxis occurring most frequently within the spinal cord and rarely intracranially. In the literature describing these lesions, examples of intraoperative imaging and cytology preparations are rare to non-existent.

Case description: Here, we describe a case of a recurrent posterior fossa neurenteric cyst compressing the brainstem in a 47-year-old female and causing incontinence and progressive quadriparesis. Intraoperative findings and cytologic and histologic features are presented.

Conclusion: Neurenteric cysts are generally considered to be benign and slow-growing though recurrence is common. This case of a recurrent neurenteric cyst is illustrated by intraoperative macroscopic and cytologic images.

Keywords: Cytology; Endodermal cyst; Enterogenous cyst; Neurenteric cyst; Posterior fossa epithelial cyst.

Conflict of interest statement

There are no conflicts of interest.


Figure 1:
Figure 1:
Neurenteric cysts compressing the brainstem. Magnetic resonance imaging demonstrated multiple, nonenhancing, multiolobulated, expanding, and extra-axial recurrent neurenteric cysts compressing the medulla (a). An intraoperative image showing the cysts which were adherent to but separable from the medulla and upper cervical spinal cord (b).
Figure 2:
Figure 2:
Cytology and histology of the neurenteric cysts. Intraoperative squash preparation stained with hematoxylin and eosin revealed sheets of epithelial cells with honeycomb architecture, distinct cell borders, and abundant cytoplasm within a background of mucin, ×200 (a). Hematoxylin and eosin-stained permanent sections showing cyst wall lined by columnar epithelium with underlying basement membrane and connective tissue stroma, ×200 (b).

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