<prompt> Parapharyngeal space is also known as:Retropharyngeal spacePyriform sinusLateral pharyngeal spaceAll  <response>: The parapharyngeal space also termed the lateral pharyngeal space, is apotential space in the head and the neck. It has clinical impoance in otolaryngology due toparapharyngeal space tumours and parapharyngeal abscess developing in this area. 