Spatium Retropharyngeum

Retropharyngeal space
Not to be confused with danger space !

Borders

 * Anterior - posterior of pharynx (buccopharyngeal fascia)


 * Posterior - Alar fascia (layer of prevertebral deep cervical fascia)


 * Lateral - Carotid sheath


 * Superior - Base of skull


 * Inferior - Superior mediastinum, at the point where alar fascia fuses with buccopharyngeal fascia (at the level of T4, carina)