Two cases of petrosquamosal sinus in the temporal bone presented as perioperative finding

Authors

  • Yong-Hwi An MD,

    1. Department of Otorhinolaryngology-Head and Neck Surgery, Seoul Metropolitan Government, Seoul National University Boramae Medical Center, Seoul, Korea
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  • Jee Hye Wee MD,

    1. Department of Otorhinolaryngology-Head and Neck Surgery, Seoul Metropolitan Government, Seoul National University Boramae Medical Center, Seoul, Korea
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  • Kyu-Hee Han MD,

    1. Department of Otorhinolaryngology-Head and Neck Surgery, Seoul Metropolitan Government, Seoul National University Boramae Medical Center, Seoul, Korea
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  • Young Ho Kim MD, PhD

    Corresponding author
    1. Seoul National University Hospital, and the Department of Otorhinolaryngology-Head and Neck Surgery, Seoul Metropolitan Government, Seoul National University Boramae Medical Center, Seoul, Korea, Seoul Metropolitan Government, Seoul National University Boramae Medical Center, Seoul, Korea
    • Department of Otorhinolaryngology-Head and Neck Surgery, Seoul Metropolitan Government, Seoul National University Boramae Medical Center, 39, Boramae-gil, Dongjak-gu, Seoul, 156-707, Korea
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  • This study was supported by a clinical research grant provided by Seoul National University Boramae Medical Center.

Abstract

The petrosquamosal (PSS) is an embryonic emissary vein of the temporal bone in humans and connects the intra- and extracranial venous networks. Few reports in the recent literature provide detailed descriptions of PSSs that are found before or during surgeries. We report the presence of PSS in two patients with chronic otitis media. An abnormal vessel was found originating from the sigmoid sinus of each patient. The vessels coursed anteroinferiorly over the superior portion of the temporal bone and terminated near the posterior part of the temporomandibular joint. The clinical significance of PSS and a brief literature review are presented.

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