Printer Friendly

Petrosquamosal sinus discovered during mastoidectomy, and its radiologic appearance on temporal bone CT: case report and brief review.

We report the case of a 47-year-old woman who underwent a mastoidectomy. Preoperative computed tomography demonstrated an unusually distended bony canal that passed through the superolateral portion of the right petrous bone. Intraoperatively, we identified the anomaly as a petrosquamosal sinus (PSS). This unusually dilated venous channel had arisen from the adjacent sigmoid sinus. A PSS is an emissary vein of the posterior fossa that courses along the petrosquamosal junction, connecting the sigmoid or transverse sinus with the extracranial venous system. While it usually regresses during fetal life, a dilated PSS occasionally persists into adulthood. Its anatomic course may lead to problematic bleeding during mastoidectomy.

Hyun Joon Shim, MD; Seong Jun Song, MD; Ki Woong Chung, MD; Sang Won Yoon, MD

COPYRIGHT 2014 Vendome Group LLC
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2014 Gale, Cengage Learning. All rights reserved.

Article Details
Printer friendly Cite/link Email Feedback
Author:Shim, Hyun Joon; Song, Seong Jun; Chung, Ki Woong; Yoon, Sang Won
Publication:Ear, Nose and Throat Journal
Article Type:Case study
Date:Jul 1, 2014
Previous Article:Angiolipoleiomyoma located in the earlobe.
Next Article:Evidence-based update on tympanostomy tube placement for otitis media in children.

Terms of use | Privacy policy | Copyright © 2021 Farlex, Inc. | Feedback | For webmasters