Retropharyngeal space

Retropharyngeal space is an anatomical region in the human body, specifically located in the neck. It is a potential space, meaning it is normally collapsed but can expand under certain conditions. The retropharyngeal space is situated between the posterior wall of the pharynx and the prevertebral fascia, extending from the base of the skull to the level of the second thoracic vertebra.

Anatomy

The retropharyngeal space is divided into two compartments by the alar fascia. The anterior compartment, also known as the danger space, extends from the base of the skull to the diaphragm, while the posterior compartment extends from the base of the skull to the level of the second thoracic vertebra.

The retropharyngeal space contains loose connective tissue and lymph nodes, which drain the nasopharynx, paranasal sinuses, and the middle ear.

Clinical significance

Infections in the retropharyngeal space, known as retropharyngeal abscess, can be life-threatening. These abscesses can cause difficulty swallowing, neck pain, and can potentially obstruct the airway. They are most commonly seen in children and are usually caused by the spread of infection from the nose, throat, or sinuses.

The retropharyngeal space is also important in the context of neck trauma. Injuries to this space can lead to the development of a hematoma, which can cause airway obstruction.

See also

• Pharynx
• Retropharyngeal abscess
• Hematoma

References

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  Gray's Anatomy illustration of the retropharyngeal space

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  Gray's Anatomy illustration of the deep cervical fascia

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  CT scan showing a retropharyngeal abscess