Parapharyngeal Space Tumors: Background, Etiology, Presentation Parapharyngeal Space Tumors: Background, Etiology, Presentation

Parapharyngeal space boundaries in dating, from wikipedia, the free encyclopedia

Parapharyngeal space; Lateral pharyngeal space

The black arrows extending from the structures of the carotid sheath indicate that those structures will most typically be displaced posteriorly and somewhat medially by a prestyloid mass.

We use the data we obtain through the use of cookies to customize your site experience by anticipating the information and services that may be interesting to you. On the right side of the diagram, the PSPS is roughly outlined in black from its uppermost aspect medial to the foramen ovale and its lower aspect contiguous with the submandibular space.

A more inferior section showing, as isolated, the PSPS relationship to the styloid musculature and how it is contiguous with the submandibular space. Deep portion of the parotid gland and stylomandibular tunnel Figs.


Anatomical boundaries[ edit ] The parapharyngeal space is shaped like an inverted pyramid. Whole organ sections showing anatomic relationships of the spaces in the suprahyoid neck in relationship to the prestyloid parapharyngeal space PSPS and retrostyloid parapharyngeal space RSPS.

The masticator space is outlined in yellow.

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It runs from the base of the skull caudally towards the hyoid bone and is limited anterosuperiorly by the pterygomandibular raphe. Roof of the parapharyngeal space: Get me the rest of this article for free Create your account and you'll be able to see the rest of this article, plus videos and a quiz to help you memorize the information, all for free.

Pharynx common carotid artery - dorsal view The Parapharyngeal Space This fascial space is also known as the lateral pharyngeal space.

A comparative parapharyngeal space boundaries in dating of the endoscopy-assisted transoral approach versus external approaches for the resection of large benign parapharyngeal space tumors.

The parapharyngeal space is divided into the prestyloid component outlined in green and the retrostyloid component outlined in red.

Parapharyngeal space | Radiology Reference Article |

The retropharyngeal space is outlined in blue and the prevertebral space in white. Inferiorly, the PSPS is contiguous with the submandibular space, explaining why masses in this space are frequently approached by removal of the submandibular gland and cephalad dissection to the PSPS via the submandibular space Figs.

Int J Endocr Oncol. Therefore, we define its boundaries, partition, and compartments. Ann Otol Rhinol Laryngol Suppl.

Lesions of the parapharyngeal space.

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Realization that the differential diagnosis: Fewer are discovered because of symptoms related to the mass such as those due to eustachian tube obstruction, although cancers can cause pain either due to local effects or skull base invasion and, if they invade adjacent spaces, trismus and rarely cranial neuropathies.

The black arrowheads indicate that masses arising with this space tend to travel through the stylomandibular tunnel, displacing or involving the parotid gland. This area includes the jugular and hypoglossal canal and the foramen lacerum through which the internal carotid artery passes superiorly across.

T2-weighted MRI of a prestyloid space mass. A systematic review of parapharyngeal space tumors reported over 20 years.


Lateral to the parapharyngeal space lies the parotid spacewhich contains the parotid gland, the external carotid artery and cranial nerve VII. The parotid and submandibular glands are discussed in Chapter We completed macroanatomical and microanatomical dissections in 10 specimens from 5 human cadaver heads; bone measurements in 50 dry skulls; and axial and coronal cross-sectional studies in 2 cadaveric specimens.

Is aided by a familiarity of the morphology of lesions as seen on MR and CT of the more common lesions in each space.

Divisions[ edit ] The parapharyngeal space is divided into 2 parts by the fascial condensation called the aponeurosis of Zuckerkandl and Testut stylopharyngeal fascia - see diagram[3] joining the styloid process to the tensor veli palatini. Otolaryngol Clin North Am.

Parapharyngeal Space

The lateral border is comprised of the superficial layer of the deep cervical fascia which covers the medial pterygoid muscle and the deep portion of the parotid gland. The PPS roof is bordered laterally by the medial pterygoid fascia and medially by the pharyngobasilar fascia.

Journal Article Journal Detail: Am J Hum Genet. The third division of the trigeminal nerve is more related to the adjacent but separate masticator space.

The significance of the margin in parotid surgery for pleomorphic adenoma. CT scan of prestyloid space mass.

MRI of a poststyloid mass. Anterior to the parapharyngeal space is the masticator space which contains the lower dental row, muscles of mastication, the inferior alveolar nerve as well as branches of cranial nerve V.

Paragangliomas of the head and neck region: The superior aspect is the base of skullnamely the sphenoid and temporal bones.

Clinical Presentation

The Retropharyngeal Space The retropharyngeal space is a fascial space that transverses the length of the neck in its entirety. Transoral robotic surgery of the parapharyngeal space: Posteriorly it is bordered by carotid sheath posteriolaterally and the retropharyngeal space posteriomedially.

We completed macroanatomical and microanatomical dissections in 10 specimens from 5 human cadaver heads; bone measurements in 50 dry skulls; and axial and coronal cross-sectional studies in 2 cadaveric specimens.

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Section at the mid palatine tonsillar level. In this early lesion, it is relatively easy to appreciate how when the lesion eventually grows to a larger size it will displace the carotid sheath structures posteriorly and medially arrows. Blood vessels of the parapharyngeal space Arteries and veins of the parapharyngeal space.

The multidisciplinary management of paragangliomas of the head and neck, Part 2.

Parapharyngeal Space Tumors

Management of tumors arising in the parapharyngeal space. You can refuse the setup of cookies by modifying the settings. Pharyngeal constrictors and palatal muscles Figs.

Transmandibular approaches to the oral cavity and oropharynx. The danger space serves as an important pathway for complicated infections of the posterior pharynx to enter the chest and spinal column. Parapharyngeal space benign tumours: Media Gallery Parapharyngeal space tumor manifesting as an oropharyngeal mass.

Parapharyngeal and retropharyngeal space diseases.