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Carotid Sympathetic Plexus Schwannoma Presenting as Middle Ear and External Auditory Canal Mass
Hyejeen Kim1, Ran Hong2, Sung Il Cho1
1Department of Otolaryngology-Head and Neck Surgery, Chosun University College of Medicine, Gwangju, South Korea.
Abstract:
Schwannomas in the middle ear and external auditory canal are exceedingly rare. The facial nerve, chorda tympani nerve, and Jacobson's nerve have rarely been reported as the origins of primary schwannomas in the middle ear cavity. We experienced a case of carotid sympathetic plexus (CSP) schwannoma that arose from the carotid canal and extended into the middle ear and external auditory canal. The tumor presented bone erosion of the carotid canal, and it adhered tightly to the internal carotid artery. This report represents the first documented case of a CSP schwannoma, which involved the middle ear and external auditory canal.
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