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A possible venous connection between the cranial and nasal cavity

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Abstract

Purpose

The foramen cecum (FC) is a fine bony canal with the aperture located immediately anterior to the crista galli (CG). The venous structures in the regions of the FC and CG have been inconsistently described and are not well understood. Here we explore these veins using magnetic resonance imaging.

Materials and methods

We enrolled 101 patients who underwent contrast examinations and exhibited intact skin, skull, dura mater, and intracranial dural sinuses. Imaging data were obtained as thin-sliced, seamless sagittal sections and were transferred to a workstation for analysis.

Results

In 84 % of the patients, tubular-shaped venous extensions arose from the rostral end of the falx cerebri and were confirmed to lie in the FC. These extensions were supplied by the superior sagittal sinus or the frontal cortical vein, and were classified into four types: rudimental slight projections, short and straight extensions, long and straight channels, and long and tortuous channels. Furthermore, 27.7 % of the patients exhibited a distinct venous channel between the venous extension in the FC and the median vestibular submucosa of the nasal cavity. Among these channels, 81.5 % were connected to the vein lying in the FC via a short channel that vertically pierced the CG.

Conclusions

The FC contains tubular-shaped venous extensions that are supplied by the rostral end of the superior sagittal sinus or the frontal cortical vein. The cranial cavity, FC, and nasal cavity may be connected by a venous channel.

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Authors and Affiliations

  1. Department of Neurological Surgery, Juntendo University Urayasu Hospital, 2-1-1 Tomioka, Urayasu, Chiba, 279-0021, Japan

    Satoshi Tsutsumi & Yukimasa Yasumoto

  2. Division of Radiological Technology, Medical Satellite Yaesu Clinic, Tokyo, Japan

    Hideo Ono

Authors
  1. Satoshi Tsutsumi
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  2. Hideo Ono
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  3. Yukimasa Yasumoto
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Corresponding author

Correspondence to Satoshi Tsutsumi.

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Conflict of interest

The authors declare no competing interests concerning the materials or methods used in this study or the findings specified in this study.

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Tsutsumi, S., Ono, H. & Yasumoto, Y. A possible venous connection between the cranial and nasal cavity. Surg Radiol Anat 38, 911–916 (2016). https://doi.org/10.1007/s00276-016-1650-9

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  • DOI: https://doi.org/10.1007/s00276-016-1650-9

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