Erschienen in:
01.01.2011 | Case Report
A Case Report on Parapharyngeal Nerve Cell Tumor (Schwannoma)
verfasst von:
Dhaval Odhavjibhai Mangukiya, Ali Reza, Margaret Topno, Raj Gautam, Prashant Mullerpattan, Raviraj Jadhav
Erschienen in:
Indian Journal of Surgery
|
Ausgabe 1/2011
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Excerpt
The Parapharyngealspace (PPS) is shaped like an inverted pyramid, extending from the skull base superiorly to the greater cornu of the hyoid bone inferiorly. The superior border of the PPS comprises a small area of the temporal and sphenoid bones, including the carotid canal, jugular foramen, and hypoglossal foramen. The PPS is limited anteriorly by the pterygomandibular raphe and pterygoid fascia and posteriorly by the cervical vertebrae and prevertebral muscles. The medial border of the PPS is the pharynx, and the lateral border is comprised of the ramus of the mandible, the medial pterygoid muscle, and the deep lobe of the parotid gland. Below the level of the mandible, the lateral boundary consists of the fascia overlying the posterior belly of the digastric muscle. The fascia from the styloid process to the tensor veli palatini divides the PPS into an anteromedial compartment (i.e. prestyloid) and a posterolateral (i.e. poststyloid) compartment. The prestyloid compartment contains the retromandibular portion of the deep lobe of the parotid gland, adipose tissue, and lymph nodes associated with the parotid gland. The poststyloid compartment contains the internal carotid artery, the internal jugular vein, CNs IX-XII, the sympathetic chain, and lymph nodes. …
