What is parapharyngeal space?
Listen to pronunciation. (PAYR-uh-fuh-RIN-jee-ul …) A triangular area near the pharynx (throat), between the base of the skull and the hyoid bone (the bone under the tongue).
Which nerve passes through parapharyngeal space?
Several cranial nerves also run though the parapharyngeal space, including the glossopharyngeal, vagus, accessory, and hypoglossal nerves. The relationship of these nerves to the other structures in the parapharyngeal space is important for avoiding injury to these structures.
What is lateral pharyngeal space?
The parapharyngeal space (or lateral pharyngeal or pharyngomaxillary space) is in the upper neck above the hyoid bone. It is an inverted cone-shaped potential space that extends from the hyoid bone to the base of the skull.
What is retropharyngeal space?
The retropharyngeal space (RPS) is an anatomical region that spans from the base of the skull to the mediastinum. Its location is anterior to the prevertebral muscles and posterior to the pharynx and esophagus.
What is the danger space in the neck?
The danger space or alar space, is a region of the neck. The common name originates from the risk that an infection in this space can spread directly to the thorax, and, due to being a space continuous on the left and right, can furthermore allow infection to spread easily to either side.
What is Gillette space?
The retropharyngeal space lies behind the pharynx between the buccopharyngeal fascia, which covers the constrictor muscle, and the prevertebral fascia. It extends from the base of the skull to the tracheal bifurcation. The space is divided into two lateral compartments (the space of Gillette) by a fibrous raphe.
What does the retropharyngeal space contain?
The retropharyngeal space (between the posterior pharyngeal wall and the prevertebral layer of deep cervical fascia) contains loose connective tissue and lymph nodes that drain the nasopharynx, paranasal sinuses, middle ear, teeth, and adjacent bones.
Why is it called the danger space?
Is Frey syndrome permanent?
The ideal Frey’s syndrome barrier has to either remain in place permanently or be replaced by dense body fibrosis which prevents the growth of parasympathetic parotid fibres toward the facial skin sweat glands.
Where is parotid swelling?
Swelling happens in parotid glands on both sides of the face, giving the appearance of “chipmunk cheeks.” Salivary gland swelling is commonly associated with mumps, happening in about 30% to 40% of mumps infections. It usually begins approximately 48 hours after the start of other symptoms such as fever and headache.
What are prestyloid and poststyloid fascia?
Compartmentalized by the styloid process and a band of fascia extending from the styloid process to the tensor veli palatini into: (I) Prestyloid, and (II) Poststyloid (retrostyloid, carotid space). Anterior: pterygomandibular raphe, fascia of the medial pterygoid muscle. The masseteric space immediately anterior to the parapharyngeal space.
What is poststyloid space?
Inverted pyramid space, base centered on small portion of temporal bone, and the apex at the greater cornu of the hyoid bone. Compartmentalized by the styloid process and a band of fascia extending from the styloid process to the tensor veli palatini into: (I) Prestyloid, and (II) Poststyloid (retrostyloid, carotid space).
What muscles divide the prestyloid and retrostyloid spaces?
The styloglossus muscle ( SG) and palatopharyngeus muscle ( PP) divide the prestyloid and retrostyloid spaces. The submandibular gland ( SMG) lies at the inferior-most extremity of the PSPS. The stylopharyngeus muscle ( SP) further divides the space.
What are the possible complications of salivary origin tumors of the prestyloid?
In salivary origin tumors of the prestyloid space, facial nerve palsy was a complication observed in 5 cases (38.5%). The most common location for facial palsy was under the lip (4 cases). Total facial nerve palsy occurred in 2 cases, although 1 of these patients, who had a benign tumor, recovered after 4 months.