This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: ENT
Parapharyngeal space is also known as: 
Select and explain. 
A. Retropharyngeal space, B. Pyriform sinus, C. Lateral pharyngeal space, D. All
C: Lateral pharyngeal space
Answer: C: Lateral pharyngeal space 
Explanation: 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.